Periodic Audio Magnesium (Mg)


500+ Head-Fier
Pros: accurate bass, exposed mids, good clarity of treble, distinct sound
Cons: treble is simplified, lows are not that extended
Another try with Amercian brand — Periodic Audio. Just several days ago I have shared the review of their flagship model — Beryllium. This take is on Magnesium — the least expensive IEMs in the lineup of this ambitious USA brand. Similar single dynamic driver structure but the diapragm is now utilizes magnesium content alloy (96%) instead of beryllium foil. Design, packaging and build quality is totally the same, therefore, this review would deposit some text from the previous one. Moreover, the comparison between MG and BE is inevitable despite totally different price segments.


Periodic Audio MG technical specifications:
  • Type: single dynamic driver IEMs
  • Diaphragm: high magnesium content alloy (96% Mg)
  • Magnets: N48H
  • Frequency Response: 20Hz — 30kHz
  • Impedance: 32Ω
  • Sensitivity: 101dB SPL@1mW
  • Peak SPL: 121dB
  • Power handling: 200mW continuous
  • THD: <1%@1mW
  • Shell material: polycarbonate + Metal-Injected-Molded grade 304 stainless steel logo caps + chemically etched grade 316 stainless steel grilles
  • Cable: 1.5m, integrated, 3,5mm audio jack


Packaging, design and build quality:

Periodic Audio made similar design of the boxes for all their IEMs — box contains graphical representation of IEM structure at the one side and full description at the bottom. AFR graphs are hidden behind the top folding cover.


Box compartment consists of the paper inlet with special opening that secures IEMs and protective case at place. All of the accessories are located inside the case.


One paragraph from the previous review which is also true for MG: couple of words about the quality of the box and storage case — yes, those do raise some questions for a person who got used to extremely good quality of packaging of IEMs from Chinese and Korean manufacturers. As far as I know, people from Periodic Audio do care much more about the resulting sound and build quality of IEMs instead of focusing on the additional accessories. The main quality question addresses pretty thin aluminum storage case that doesn’t have secure locking mechanism and won’t last long. On the other hand — the rest of the accessories look perfectly well, box is not that visually attractive but does the job of protecting the product during the transportation. Let’s say that we see two different approaches: either to provide visually attractive packaging to move the stock despite sound characteristics or to put an accent on the quality of sound which is the most important for IEMs.


Box contents:
  • Periodic Audio MG IEMs
  • Storage case
  • 6 pairs of silicone eartips
  • 2 pairs of memory foam eartips
  • 3.5mm -> 6.6mm adapter
  • 3.5mm -> 2 X 3.5mm L+R plane adapter
I have already mentioned some confusion about finding such accessory as 2×3.5mm plane adaptor. I believe that during a flight people are more likely to use the cheap disposable earphones, provided by the cabin crew instead of plugging their expensive stuff into poor and noisy audio outputs.


Good choice of eartips, made of medical grade silicone and uretanes.

Caps with brand logo are made of 304 stainless steel and really add a lot to the overall design of MG IEMs.


Shells are made of polycarbonate for zero resonance and extra strength to resist mechanical damages. All shell elements are perfectly aligned and neatly assembled with very small spaces between parts.


Cable is 1.5 meter long, covered with black silicone and ending with 3.5mm straight plug in rubber housing.


The cable is integrated, which is a kind of a drawback. However, it has good banding protection from IEMs side and looks pretty durable, in general, to live long and happy life. Nevertheless, I would still recommend to pay some extra attention to it during use as there is no chance to exchange the cable.


MG IEMs are quite comfortable, thanks to low weight (only 9.3g for both) and quite a choice of eartips. Fit is secure and tight, so the IEMs are unlikely to fall out while walking or exercising. Pretty good and comfortable fit common for various IEMs with bullet-like shape.


Sound quality:

MG IEMs were tested on Hizdizs AP80 and HiBy R6Pro DAPs

Lows and midbass:

As in case with BE, MG bass is similarly well-developed, distinct and precisely contoured. The extension feels to be a little bit lower while the whole range is a bit more tight and congested. Presence of bass is neither too much nor too small — good balance and amount. Layering with other frequencies is very good, lows don’t tend to mix with mids. In overall, lows are quite close to the presentation in a flagship model with a little bit chopped of the exnetion and openess. Again, MGs are not oriented towards bassheads as the lows are rather more accurate than accented. Very similar to the performance of BE but with even less emphasis on bass.

Midbass is powerful and energetic. Drums sound natural. No lack of air or dynamics, no influence is spotted from the treble part which results in accurate and non-distractive sound in some tracks susceptible to excessive drum gain.


Mids and vocals:

In contrary to BE, MG shine with its mids. This range sound very natural, more exposed and having very good presence in sound picture. Timbre is on slightly warmer side, sound is rich and thick. Male and female vocals don’t have much difference in gain and perceived similarly exposed, while female vocals don’t feel distructing and shouting at higher volume levels. Most of the resolution is also focused in mids, resulting in good texturing and detalization of voices and instruments. In comaprison to BE, MG do sound less detailed and more muted. One of the reasons is that treble range is not that bright and elevated, thus, not adding imaginary sharpness to mids. But if to avoid the direct comparison with its more expensive sibling — MG are performing good in this respect.



MG treble also differs from BE performance — it doesn’t overwhelm with the details — sounds pleasing, moderately clear, and transparent. Treble here is not so emphasized and less crisp in overall. This make MG more neutral and flat in sound, with more compact scene. Presence of treble is totally fine, just the extra accent is not made on this range and the sound of it is less bright, vivid and extended.


Imaginary soundstage is only moderate in terms of depth and width. Some stage shrinkage (in comparison to BE) is due to less volumetric lows and less extension and clarity of treble. Instrument and range separation is still good and help to get the distinctive sound with good layering.


Sound in overall:

Periodic Audio MG sound can be described as well-balanced, sounding quite calm and complete, with reasonably textured bass, exposed mids and accurate treble. These IEMs sound more natural but less engaging than BE. This makes MG more universal for different music genres. Best performance was spotted with classic rock and electronic music.

Compared to Anew U1:


Anew U1 are also based on single dynamic driver, have neutral tonality with good resolving potential. MG do sound brighter and more engaging, while Anew U1 are like being lifeless in the direct comparison. Lows are more textured and having more accent in MG while the treble is brighter as well. Resolution in mids feels to be slightly higher in Anew U1 but MG do not suffer from the shouting female vocals as U1 do in which case it might be a problem with for people susceptible to lower treble peaks.



Second take on IEMs from USA did not disappoint either. Similarly good performance of both Periodic Audio units in the respective price segments. MG sound impresses with accurate and textured bass, decent layering, good balance, smooth and comfortable perfromance. Build quality is very good. In overall, Periodic Audio MG is a good example of universal IEMs with natural sound and a pinch of expressive juice. The last, but not the least is the low price point which makes MG a great bargain for people that seek for a good dynamic driver IEMs.

You can buy Periodic Audio BE IEMs at official store


New Head-Fier
Pros: Pleasant sound at price point
Sensitive enough to work well with a mobile DAP
Cons: Can be indistinct, particularly in bass region
A bit about me and my approach to this review

Relatively inexpensive IEMs like the Periodic Audio Mg are a category of special interest to me. I spend a lot of time in either a noisy lab, or a noisy office environment, and I use IEMs for their combination of sound isolation and portability. While products with eye-watering prices, and hopefully performance to match do exist, they don't fit my use case. Background noise limits the impact of excellent audio performance, if it's present, and the constant wear-and-tear rewards robust construction, and the possibility of my leaving them behind somewhere, or of them walking off, makes sinking too much money into an expensive pair unattractive.

How the Mg fits into my use-case

Periodic seems to recognize that a market exists for durable IEMs for use in noisy environments exists, and they further seem to be positioning the Mg into that market, writing on their website:

"The sonic signature of the Mg IEM is relatively neutral but with a brighter top end [...]. Many people prefer this sound for use in noisier environments. All [Periodic] IEMs feature polycarbonate bodies for high strength [and] butyl rubber strain reliefs" (emphasis mine).

Accordingly I’ll discuss use both at home, in good listening conditions, as well as the suitability of the Mgs as a more mobile option.

The Beginning - Acquisition and Goodies

This particular Mg pair was given to the recent Bay Area meetup by @DanWiggins, the head guy over at Periodic, with the understanding that it would be used, and honest impressions given. I
I won the pair in a raffle, so this is me holding up my side of the bargain.


The Mg comes with a normal amount of kit, including an airplane adapter, a 1/8" to 1/4" adapter, several different size ear tips, and a carrying case straight out of the Skoal collection. The airline adapter I understand, same with the case (although I have more to say on it later) but the 1/4" adapter puzzles me a bit. I know they're often included as standard with headphones that have 1/8" terminations, because many amplifiers have 1/4" outputs. However, in a budget conscious product, with a published sensitivity of 101 dB SPL at 1mW in ear, making nice with desktop amplifiers seems a bit odd. On the other hand, if I'd just gotten my brand new Schitt Fulla 2 and Mgs out of the mailbox, excited to see what all the hifi fuss was about and then couldn't listen I'd be pretty unhappy. Maybe then the adapter is included as a gateway to non-phone based audio, an idea I can get behind. For me though I mostly used a Fiio X5 3rd gen DAP with the Mg, which like most DAPs has an 1/8" output.
About that case though - it's to small. The earphones can be made to fit inside, but only just, and only if they're laying flat. Keeping coiled up earphones in exactly the correct orientation, while installing a screw lid over them is tricky. Coiled earphones tend to come uncoiled, and if the coil is is constrained in the x-y plane the uncoiling then expands in the z direction, which doesn't help in closing the case. Also, since the case does have a screw-on lid, there's an area defined by the screw depth and the ID-OD difference between the lid and the case body which is just perfect for a cable to creep into and get pinched.

The difference in size between the Mg case (left) and, for example, a Massdrop X Noble Luxe case (right) is striking.


Now that the case talk is out of the way, let's consider the sound. Periodic does include frequency response plots in the packaging, but given the printing resolution I suspect they're really just science-y branding and not intended to be read.


If you do want to read frequency response charts for the Mg higher resolution ones are available on the Periodic website. Since I have the actual monitors in hand I'm not going to bother about that - I'll just listen to them, never mind the packaging.

All testing is done with the Mgs coming straight out of a Fiio X5 3rd gen with 44.1kHz FLACs unless otherwise noted.

Overall the sound coming out of the Mgs is pretty good, and these are $99 earphones, so pretty good is solid. Comparing to higher performing (and pricer) options it’s possible to detect a general indistinctness, but at this price point, the Mgs are very competitive. Periodic themselves recognize this price/performance tradeoff perhaps even more sharply than some of their competitors. They sell the Be for 4x the price. It’s exactly the same housing, cabling and kit, but with a different driver. Having heard the Be as well I can tell you that its clearer than the Mg.

Getting more specific I find the sound to be strongly titled towards the treble. In Queen's "We Will Rock You" for example, the foot stomps and handclaps that accompany Mr. Mercury are present and compelling, until the 1:22 mark, when a peal of feedback announces the arrival of Brian May and Red Special. It's at this point that the treble dominates, and particularly the foot stomps (bass) become indistinct and difficult to hear. Something similar happens with "Another One Bites the Dust". Here John Deacon plays his famous base riff unaccompanied twice to kick off the track. On the third repetition Brian May joins in, with a palm muted double of the baseline, two octaves up. Deacon keeps playing the riff, but with the Mgs it's difficult to tell. It's not that there isn't any lower frequency sound, it's just that it gets mushy and I have trouble picking it out as any instrument in particular. Now it could be the Brian May just doesn't like the rest of Queen, and is intentionally overshadowing them. However, I've just been to see Bohemian Rhapsody in the theater and he seems like a nice guy, so it's probably the monitors.

As I mentioned above, I find the inexpensive IEM space interesting, so I have two other ~$100 pairs on hand, the Massdrop x Noble Luxe, and a Echobox Finder X1. None of them, including the Mgs, are all that great in terms of bass response. The Luxe are probably the best of the bunch here (they have their own issues too, but that's a topic for another time).

On tracks without strong base presence, for example Carl St. Clair and the Pacific symphony Orchestra's recording of Toru Takemitsu's "From Me Flows What You Call Time" fare much better. The various xylophone parts, which are generally in the upper register, come through nicely but don't over-compete the midrange-focused orchestra.

Despite the treble focus the Mgs really aren’t fatiguing. I like the sound, particularly for classical music at home.

There is a sizable bass port on each monitor - I’m not really sure what it’s doing, but sound isolation does suffer somewhat as a result. I’m less impressed with the Mgs in noisy environments, preferential treble tuning or no.

In the interest of completeness I did also try the Mgs briefly with a Millet Hybrid Starving Student amp. This amp not an ideal partner for such sensitive IEMs. It has a relatively high noise floor and didn’t improve clarity vs. running straight out of the Fiio. I don’t have anything else amp-wise on hand that would be better suited to the Mgs - but again, I don’t think they call for a dedicated amp, nor would they particularly benefit from one.


I find the soundstage of the Mgs to be reasonably wide (in the horizontal plane), but quite also short (in the vertical direction). The width might be down to the relatively long geometry of the IEMs - I’m not exactly sure. Overall though, very pleasing at this price point.

Build Quality

Here’s where I start to have issues with Mgs, particularly given Periodic’s nods to durability on their website. The cables are extremely thin, 2mm before the split, 1.5mm afterwards, and very flimsy. They’re also not replaceable. Remember above when I said the case talk was done with? Well, I’ve changed my mind - here’s a picture of the result if you pinch a cable while screwing down the case lid. Why is the case so small?


You’ll want to use the case though because even though these earphones don’t have an inline remote/microphone module they also don’t have a collar that slides along above the split to keep both earphones together for storage. Even a $15 pair from Apple has one of those. Build quality is an area where the similarly priced Echobox Finder X1 (for example) beats out the Mgs handily. So while I like the Mgs' sound with a mobile DAP actually using them on the go is likely to result in damage.

Periodic does offer a 5 year warranty on workmanship and defects, but not on breakage due to mishandling, so it doesn’t really help with the Mgs’ inherent fragility.

In Summary

I’m confused by the Mgs. If you’re in the market for some inexpensive IEMs, for use out of a mobile source, but in quiet environments, and with a use case where wear and tear aren’t an issue, the Mgs are a good choice. That’s a lot of qualifiers. They are nice sounding IEMs for the price and I do like that about them, but at the same time, there are significant usability drawbacks that prevent me from giving the Mgs a full throated endorsement.


  • IMG_3111.jpg
    1.6 MB · Views: 0
  • IMG_3109.jpg
    2.6 MB · Views: 0
  • IMG_3101.jpg
    2 MB · Views: 0
  • 181119160444206.jpg
    693.6 KB · Views: 0

Johnny Mac

New Head-Fier
Pros: Great clarity, Great build quality, accessory set, super portable.
Cons: Non-detachable cables.
I have always found it alluring to do things in simplicity, especially in a hobby such as audio where extravagance and lavishness seems to have taken over if not for the most part for the current trend, little did I know that there are some there who’d choose to take the path less taken, which was why I was delighted to have stumbled upon Periodic Audio.

Periodic Audio started way back 2016 with a “Portable Audio Excellence” vision banking on all the basic necessities portable audio needs; portability, comfort and sound quality. They presently fielded a trio of audiophile IEMs to carry their brand and vision namely the Periodic Audio Magnesium, Titanium and Beryllium and an upcoming portable amplifier, the Nickel. What we have now to realview though is the duo of Periodic Audio’s extremities, the Beryllium priced at $299 and Magnesium priced at $99. Thanks to Dan of Periodic Audio for providing the review samples in exchange for an honest review, you can secure this duo of IEMs from the Periodic Audio official website which also if you are short on funds offers a discounted blemished set.

Periodic Audio’s Beryllium relies on the new trend of employing the use of Beryllium in its diaphragm which can also be found on some other audio products from Focal and Master & Dynamic due to its high strength: weight ratio characteristics which is highly sought after for use as diaphragm material while the Periodic Audio Magnesium relies on 96% Magnesium alloy on its diaphragm which although has good strength: weight ratio still falls short of Beryllium’s superior sonic features which begs to question us, will Periodic Audio’s gamble on Beryllium and Magnesium coupled with simplicity more than enough to hit the bull’s eye of an audiophiles’ checklist? Let’s take the shot.

Packaging and Build Quality

I’m a sucker for everything black and white so when Periodic Audio’s duo of Magnesium and Beryllium IEMs arrived in my office clad in a straightforward semi-glossy black and white cardboard box with only the Periodic Audio name, a schematic diagram of the IEMs themselves and the periodic table style of the Mg and Be elements, I knew then and there that this has ticked my affinity towards things simple. Opening the box however was a struggle, the glue was so strong and I would hate to have to tear apart the box. Inside the box is a much simpler white flapped box which revealed the IEMs themselves, both the Be and Mg have identical packaging and accessory set. The IEMs rested on a glass-like pocket with an installed foam eartips to act as a cushion and a pseudo-gold coated metal carrying case which reminded me of my younger pomade days. Inside the metal carrying case were a set of foam tips, another set of silicon bi-flange tips, another set of silicon single-flange tips which were all in black, an airline adapter and a gold-plated 6.3mm adapter. There was no shirt-clip nor did a rubber pouch include which personally would have appealed better with regards to their company mission of portability since the metal carrying case is just too much to be carried around on a pocket.


The Periodic Audio Be and Mg IEMs uses bullet-type polycarbonate housings with no L-R markings except for the metal mesh on the nozzle being red for right and black for left. The nozzle doesn’t use another material but instead uses the same polycarbonate material as the housing so no worries with it falling off. A vent is present on both IEMs which is located on the upper portion of the IEM housing which is reinforced by metal which matches the bullet-type housing caps with Periodic Audio’s P and A unified logo. The cables are non-removable which is okay on the Mg IEM but would have personally preferred the Be to have removable cables although their upcoming releases is hinting on having removable cables. Although the cables are removable it is still a good one which doesn’t tangle and doesn’t retain folds and also not too rubbery and sticky. There is minimal strain reliefs on all cable joints which uses butyl rubber and has minimal microphonics when used on the go. Overall the build quality of both the Be and Mg IEMs whispers a silent “rest your mind easy, this would last” thought yet with all these specifications, does both IEMs stand the glare of extravagance from its counterparts? Let’s take a peek then.

Periodic Audio Beryllium Specifications:

Frequency Response: 12 Hz to 45 kHz

Impedance: 32 Ohms nominal

Sensitivity: 100 dB SPL at 1mW in ear

Periodic Audio Magnesium Specifications:

Frequency Response: 20 Hz to 30 kHz

Impedance: 32 Ohms nominal

Sensitivity: 101 dB SPL at 1mW in ear

Do note that the both the Periodic Audio Be and Mg IEMs underwent the recommended 250-hour burn-in process and for the duration of the realview, the stock medium foam tips were used as well the Sony CAS-1 system off an MSI GF62 8RE laptop using Foobar2000 v1.4, Opus 1 and Xduoo x3ii outputting 16/44 Flac files which would be mentioned along the realview.

This is a great do-it-all IEM due to its superb detail retrieval and clarity giving it a balanced and flat sound signature. I cycled through Michael Buble’s Greatest Hits album and the Be was a very engaging set of IEMs which gives a full-on experience of the whole sound spectrum, no noticeable extremes from the lows, mids and highs.

Riding on the almost all-out magnesium alloy diaphragm makes the Mg emanate a still near flat signature with much more emphasis on the upper frequencies which should be noted in comparison as to how the Be sounded so good on the balanced and flat sound signature.


Pulling out Arctic Monkey’s “Do I Wanna Know?” which drops loads of sub-bass and bass right off the bat enables the Be to easily cater to the lower frequencies with great response, not extended yet not lacking as well, the thump on the sub-bass has strong control on it and doesn’t make the lows sound too powerful while the bass drops gives a pinch of warmth, just enough to tease the audiophile’s crave for lower frequency preference.

The Mg’s lower frequencies performance gives is at a notable plane which doesn’t overlap towards the midrange. Sub-bass hits has strong control on it and still doesn’t make the overall sound too powerful while the bass drops doesn’t provide enough body to make the Mg comfortably sound warm, it leans on the warmer spectrum but the bass drops doesn’t decay smoothly.


The Be’s midrange performance was tested using Usher’s Hard to Love album, playing the “Bump” track specifically highlights the male vocals and the Be gives out strong distinct intelligibility of the different singers voices. The lower midrange performance is stellar and makes the bass performance much more perceived. Timbre is also natural and clarity once again takes the stage with grandiose.

Usher's vocal prowess doesn’t sound too appealing and engaging on the Mg as compared to the Be although there is still distinct intelligibility of the different singers voices. Lower midrange performance falls short from the Be which supplants the bass region lacking the added thump. Timbre is a tad less natural and clarity takes a hit.


It would have been very easy for me to feel high with how the Be fares so far on the lower and midrange frequencies. The Be’s high frequency performance is another positive feedback for it. Train’s “Silver Dollar” gave out crisp and detailed treble hits. The occasional crash cymbal hits are highly distinct but doesn’t sound shrill while the ride cymbal hits had great definition while not sounding harsh. Sibilance is taboo for the Be and Sparkle is easily observed.

At this stage of the realview, it is already evident that the Mg is already a slightly diverging listening experience than the Be however it is great to find that the high frequency performance allows for a strong semblance with the Periodic Audio duo of the Be and Mg. Train’s “Silver Dollar” still sounded crisp and detailed treble hits although the crash cymbal hits lost some of its trashy sound which was easily heard on the Be while the ride cymbals still had great definition. Sibilance is once again taboo on the Mg and Sparkle is harder to perceive now.

Soundstage and Imaging

The Be exhibits a wide soundstage in IEM parameters and imaging is stellar, the Beryllium diaphragms performs great in giving out the Be’s striking clarity. Left to Right panning is also great and easily observed as well as horizontal instrument placing.

The Mg exhibits a narrower soundstage than the Be yet still retains the stellar imaging and clarity. Left to Right panning is still great while horizontal instrument placing is lesser

Putting one’s all eggs in a single basket has its pros and cons and yet Periodic Audio still decided to roll their eggs in one. Possessing identical silhouettes and accessory sets, the Periodic Audio Beryllium and Magnesium leaves the consumer to solely rely on their sound signature preference on choosing which to get and despite the lack of a detachable cable, the Periodic Audio Beryllium still shines bright with its plain looks amidst all its fancier counterparts while still going head to head on sounding excellent. The Periodic Audio Magnesium also compliments the Beryllium well, giving consumers a great price-to-performance ratio performer with an easier to swallow non-detachable cable price tag.


Formerly known as Res-Reviews
Pros: Outstanding sonic performance, natural and effortless sound signature, comprehensive accessory package
Cons: Somewhat uninspiring build quality
Periodic Audio Mg Review: Rare Earth Sound
Periodic Audio is a company heavily grounded in science. They take an objective, bare-bones, approach to audio that revolves around R&D, not marketing. Such an approach is not one that is easily found these days and as is quite welcome. The Mg is Periodic Audio’s budget IEM, coming in at a price of $100. Does Periodic Audio’s approach to creating IEMs result in competitive products? Or is the Mg just another middle-of-the-pack design?

You can find the Mg for sale here on Periodic Audio’s website.

About My Preferences: Heads up, I’m a person! As such, these words are my opinion, and they are tinged by my personal preferences. While I try to mitigate this as much as possible during my review process, I’d be lying if I said my biases are completely erased. So for you, my readers, keep this in mind:

  • My ideal sound signature would be an extended sub-bass with a leveled, but textured, mid-bass.
  • I have a mild treble sensitivity.
Source: The Mg was powered like so:

HTC U11 -> USB-C adapter -> earphones


Hidizs AP100 3.5mm out -> FiiO A5 3.5mm out -> earphones


HiFiMAN SuperMini -> earphones


PC optical out -> HiFiMe SPDIF 9018 Sabre DAC 3.5mm out -> earphones

All music was served as MP3 @320Kbps or as FLAC.

Tech Specs
  • Frequency Response: 20 Hz to 30 kHz
  • Impedance: 32 Ohms nominal
  • Sensitivity: 101 dB SPL at 1mW in ear
  • Power Handling: 200 mW continuous
  • Peak SPL: 121 dB
  • THD: Less that 1.5% THD at 1mW
Sound Signature
Sonic Overview:

The Mg is a gently V-shaped IEM with a mildly boosted treble and small mid-bass hump. It doesn’t stand out as particularly colored and is incredibly cohesive. The Mg’s timbre is impressively natural both in emphasis and decay.

Treble: Songs used: In One Ear, Midnight City, Outlands, Satisfy, Little One, Show Me How To Live (Live at the Quart Festival)

The upper register of the Mg is emphasized to create a more airy feeling and presentation. There is not even the slightest hint of sharpness or sibilance, and the treble is completely free from extraneous hotness and sparkle that would detract from the listening experience and be harsh on the ears. This absence of harshness leaves in its wake a very articulate and open treble capable of expressing a tremendous amount of range, extending well into the upper-treble with no issue.

Midrange: Songs used: Flagpole Sitta, Jacked Up, I Am The Highway, Dreams, Too Close, Little Black Submarines

The Mg has a transparently tuned midrange aimed at producing a natural and color-free instrumental presentation. To a very significant degree, it does this, and with grace. The lower midrange has a minute amount of warmth right around 500 Hz. It recesses all the way up to the 1–2KHz range where it spikes up again.

The Mg excels at instrumental cohesion and tonal accuracy. It easily resolves complex tones and layering, hardly ever missing a beat. For a $100 you’d be hard-pressed to find an IEM with similarly-competent technical performance. Vocal intelligibility is very good too. It shines in ways that I rarely hear from dynamic drivers, and even rarer still on dynamic drivers at this price-point.

Bass: Songs used: Moth, Gold Dust, In For The Kill (Skream Remix), War Pigs (Celldweller Remix)

The Mg’s mid-bass in boosted past neutral by roughly 2–3db. It is full and dynamic, providing a punchy and respectably rumbly experience. The Mg’s bass is tuned very well and never overwhelms the midrange or loses texture control. Its reasonable emphasis and natural timbre allow the Mg to perform well in essentially every genre, including electronic music. While it won’t vibrate your skull, the Mg can certainly get the job done when the bass drops.

Packaging / Unboxing
I have both an Mg V1 and Mg V2. The Mg V2 has new and improved packaging. The first set of images is of the V2. The second set of images is of the V1.




The V2 features a couple of changes, but the biggest one is that the IEM’s cables are no longer tightly wound when being placed into the package. This prevents the V2 IEMs from suffering from pseudo-permanently kinked cables like the V1 IEMs.




Construction Quality

The Mg has the same exact build as the other IEMs in the lineup, at least externally (save for a difference in cap color). The housings are made of a polycarbonate: a light plastic that supposedly has zero internal resonance. The stress reliefs are made from a somewhat stiff plastic. It doesn’t feel like it does much to relieve cable stress in more extreme situations though. A softer and more pliable material may be more suited to get the job done here.

The Mg’s nozzles have also been revised. Instead of featuring the colored wired mesh that the V1 used, all the Periodic Audio V2 IEMs use a finely-perforated plate that sits flush with the lip of the nozzle. The right side is colored red to give you a visual indicator of which channel is which.


The cable has also been revised to not use metal parts on the cable. While there’s no difference in functionality, I do miss the small amounts of flair that they gave the V1 units.

And speaking of cables, I think we should talk about the cables that Periodic Audio uses. They aren’t bad per say, they just don’t feel sturdy in a way that you’d expect from a $100-$300 IEM. Increasing the thickness, using a (reasonable) braided cable, or even adding a structural layer of sleeving would each be very much appreciated and add a lot to the fit and finish of the Periodic Audio lineup.


The Mg is very comfortable, especially when using the foam eartips that were in the box. The housings are so light that they are barely noticeable when in use. I had no problems when wearing them for over three hours during a project at work. They even worked ok while jogging, though they do stick out a bit too far for comfort for my comfort during rigorous exercise.

The Mg comes very well stocked, especially for a $100 IEM. Inside the box you’ll find:

  • 3x pairs of silicone eartips
  • 3x pairs of foam eartips
  • 3x pairs of dual-flange eartips
  • 1x airline adapter
  • 1x 1/4in adapter
  • 1x hard carrying case
The carrying case is compact but still has plenty of room to easily store the Mg. The lid screws on and doesn’t seem to have any looseness issues that a more poorly-machined case might.

1: Periodic Audio Ti ($200)

The Ti is more V-shaped than the Mg is. It has a more emphasized treble and more prominent bass, extending well to the 50Hz range. The Ti trades in a very small of midrange presence for a treble sparkle and bass impact/rumble.

2: Massdrop x NuForce EDC3 ($99)

The EDC3 is a much more linear IEM than the Mg. The two both aim for similar goals: a natural and neutral listening experience. However while the EDC3 aims for a flat (save for some subtle treble emphasis) frequency response, the Mg gives the extremes of the sound spectrum little boosts, accentuation some oft-forgotten details that would otherwise be hard to hear. These two approaches are distinct but equally good to my ears. Fans of linear sound signatures will certainly appreciate the EDC3. Those who are more familiar with traditional V-shaped sound signatures, but still want something more neutral, should go with the Mg.

The Mg provides some serious audio quality at a relatively affordable price point. With a mildly V-shaped sound signature, inoffensive treble, excellent detail retrieval, and outstanding cohesion, the Mg places itself squarely towards the top of my list for favorite IEMs under $100. The V2 revision of the IEM tackled some build-quality and QOL issues I was concerned about and with a little more development and improvement externally the Mg could very well become a five-star IEM. Keep up the good work Periodic Audio!

As always, happy listening!
  • Like
Reactions: nick n and G_T_J

Dobrescu George

Reviewer: AudiophileHeaven
Pros: - Clean Midrange
- Dynamics are amazing for 100USD
- Warm and playful bass
- Has a nice sparkle in the treble, leading to an exciting sound
- Versatile, works with almost any music style
- Airy Sound with a large soundstage
- Good Price/Performance Ratio
- Good overall tonal balance favoring a thick and lush sound
- High quality Metallic Carrying Case included in the package
- No cable microphonics and not overly sensitive to hiss
- Rather comfortable for any ear size and shape
Cons: - No marking of Left and Right earpiece, although they have different colors for the wax grilles inside
- Cables are not detachable
- Does not scale a lot with the source
- Most treble energy is focused around 7-9kHz, with just a bit of enhancement higher
Periodic Audio Magnesium - Warm Delight

Period Audio Magnesium, also named Periodic Audio MG is the most affordable IEM from Periodic Audio's line-up, a new line of IEMs, with all their drivers based on a different Element. This is an entry-level IEM. and we're quite excited to see whether it can hold its ground against other titans from the 100 USD price range.


Periodic Audio is a rather new company on the Audiophile Market, serving quite a specific niche. They create IEMs with very similar build styles, very similar aesthetic aspect, and very similar feeling, but with incredibly different sound, by using different materials for their drivers. Each of the IEMs from their current line-up has a different basic element at the base of the driver membrane, today's star being based on a Magnesium Driver, metal which is known for a complex set of properties. To be precise, the membrane of the driver is made from 96% Magnesium, which is quite a lot of Mg for any IEM membrane, and this will surely have an impact on the overall sonic performance of Mg IEMs. Period Audio has shown excellent professionalism in our conversations, and we trust them to take good care of you, if you should ever need warranty or such.

It should be noted that I have absolutely no affiliation with Periodic Audio, I am not receiving any incentive for this review or to sweeten things out. This review is not sponsored nor has been paid for by Periodic Audio or anyone else. I'd like to thank Periodic Audio for providing the sample for this review. The sample was provided along with Periodic Audio's request for an honest and unbiased review. This review will be as objective as it is humanly possible, and it reflects my personal experience with Periodic Audio Mg. Every opinion expressed is mine and I stand by it, the purpose of this review is to help those interested in Periodic Audio Mg find their next music companion.

About me


First things first, let's get the packaging out of the way:

The package of all of the Periodic Audio's IEMs is exactly the same, from end to end. They all come packaged in the same cardboard box, which you can only open once, thing which we noticed only after opening one of the packages.

The cardboard box is nice, and it has a ton of information both about the element which the IEM is based on, as well as the other technical details about the product you purchased.

There is a very stylish and premium-looking case included in the package, in golden color, and there is a good number of tips as well. This being said, Periodic Audio used a very universal size for their bores, so they are compatible with Spinfit and with a large number of different tips.

There are also a few Graphs on the package, of Frequency Response, Impedance, Spectral Decay and of THD (Noise or Distortion). This being said, Periodic Audio has invested quite a lot in taking those measurements reliably, so we know they are a rather professional company when it comes to their engineering, and their package provides everything you could need to enjoy their IEMs. There's nothing else we could have wanted with Mg IEMs, especially as they aren't microphonic, so they won't require a shirt chip, and the carrying case included will provide a really nice amount of protection to them, so you won't have to worry much about carrying them.

All in all, the package reaches a golden rating, especially considering the amount of technical information Periodic Audio managed to include there, which is better than the average, being as good as the most professional companies include with their products.

What to look in when purchasing an entry-level In-Ear Monitor

Technical Specifications

Frequency Response - 20 Hz to 30 kHz
Impedance - 32 Ohms nominal
Sensitivity - 101 dB SPL at 1mW in ear
Power Handling - 200 mW continuous
Peak SPL - 121 dB
THD - Less that 1.5% THD at 1mW

Build Quality/Aesthetics/Fit/Comfort

Now, this section will stay true (and be copied over) to all of the Periodic Audio IEMs, as their outer construction is exactly the same. The only real difference between them is the color of the plastic at the back of the IEM, which is different for each of those IEMs.

The main IEM shell is made out of plastic, it is a light IEM, with a nice build quality, and although the IEM housing is on the large side, they are pretty simple and straightforward, the bores are not too wide and should fit every ear size out there.

There is a vent on the IEM body, which makes sure you won't have to deal with Driver Flex, thing which made us really happy, since those are single dynamic driver IEMs and really need that vent to work correctly, and the IEM has a colored cap at the back of the IEM body.

The cables are straight, simple, and attached to the IEM body. We have gotten used to seeing detachable cables for IEMs in this price range, so it is a bit of a surprise to see Periodic Audio go for non-detachable cables, but most users will prefer good non-detachable cables and a good warranty over poorly made MMCX or 2-Pin connectors.

From our experience with Periodic Audio, the cables they used are of a fairly good quality, they look simple and this is probably for the best for a set of portable IEMs, they have a good flexibility to them, are not microphonic, and they are made from 99.99% pure copper. This is as good as it gets for a IEM at this price point, and honestly, besides the very simple look, they work really well. We can't blame Periodic Audio for wanting to include a simpler-looking cable with a portable IEM, after all many people want to be stealthy about the cost of their IEMs while on-the-go.

When first using them, we also noticed that the Left and Right earpiece are not marked, so you might end up confusing them, the marking being inside of the IEMs, with the wax guard grille being red for the right piece. This is pretty uncommon, and not necessarily a big issue, but if you wouldn't notice that the insides of the IEMs have different colors, you might become a bit frustrated with determining the Left and Right each time you use them.

Other than that, we could say that they are really good. Still, given the competition we can't say they are golden, since they do not have detachable cables, and no L/R markings, both which are standard in this price range. Everything else is golden though, including the quality of the IEMs themselves, how well they are put together and thought, and even how good the cable is.

Sound Quality

Now, those are 100 USD IEMs, and they can even be bought for cheaper on Periodic Audio's site, if you buy a blemished pair (we are still to confirm exactly what this means, but we understood that those are pairs with minor aesthetic imperfections but full quality to their sound).

For this price, you get quite an amazing bang for the buck, a rather colored IEM with a warm, thick, dynamic, impactful, sparkly, airy and satisfying sound. It may seem like you read this before in our reviews, but it seems like they are slightly similar to some other headphones we reviewed in the past, so don't worry, it is just the way they sound, and the sound some companies go for with their tuning.

The bass is heavy, thick, and most of the impact is in the 80 - 110Hz area, with the sub-bass also being present, but with most of the weight of each musical note being focused in the upper bass. The speed is fairly good, especially for 100 USD, better than the average, while the depth is good. The impact is nice, and the bass feels rather resolving, although it also feels inflated and tuned towards a warm tuning rather than a neutral or natural one.

The midrange is warm toned, with a bit of midrange recession going on compared to the bass, the warmth and the recession reminding a bit of how Ie80 from Sennheiser sounds like. The midrange detail is fairly good for their price point, tonality, although a bit on the thick side for both male and female vocals, is still fairly natural, music sounding rather warm and enticing.

The treble has a bit of a focus point around the 7-9khz area, the Magnesium being actually pretty open and sparkly in that area, and although it also makes a comeback a little higher on, it never gets dizzy or sibilant, although it is slightly thin.

Periodic Audio Magnesium works fairly well with any type of music, including Classical, Metal, Pop, Vocal-driven music and so on. It is fairly hard to say that they have issues with any single genera, and although their sound is fairly colored, they work equally well with any music style.


The soundstage of Magnesium is fairly airy and large, especially for this price point, making a fairly strong competition for IEMs at a similar price. The imaging and instrument separation are also fairly good, and in line with other 100 USD IEMs we tested, and if you decide to go for one of the "blemished" or what we'd consider a b-stock pair, you will have a better than its price point soundstage.


The ADSR and PRaT (Texturization) is slow to natural, with the textures being smooth and creamy, more textured instruments being rendered relaxing and smooth. This means that trumpets and electronic effects which should be aggressive will lack their aggressive edge, and instead be rendered playful and friendly, making Magnesium a good IEM for leaning back and enjoying Jazz and other relaxing music, but a bit smooth and friendly for Black Metal, Death Metal or Mindless Self Indulgence.

Portable Usage

The portable usage is excellent.

You'd have a hard time finding any kind of negative to Periodic Audio IEMs's portability in general, those are lightweight, they are comfortable, come with high-quality silicone tips, and they also have an ergonomic shape which works being worn both over-the-ear and straight-down. Furthermore, the cables are not microphonic, the eartips don't get slippery after a while, and they don't have driver flex, making them pretty much excellent for walking, running, and just a pleasure to use portably.

The isolation is average though, since those are based on a large Dynamic Driver, and dynamic driver require the IEM to have a vent so you aren't affected by driver flex, so in the end it is a little bit of a sacrifice, on this side, but then again, most IEMs in this price point won't isolate much better, unless they are based on BA-only designs, or unless they are either huge or have driver flex.

We noticed that Magnesium works well paired with anything and doesn't have a lot of hiss from hissy sources, so you can power them from virtually anything. They scale a little with the source, but not quite that much, this being rather normal for a IEM in this price range. This means you'll be able to enjoy them straight of your smartphone without losing too much for not using a professional-grade DAP.

One advantage those have over some other 100USD IEMs is that they don't look that expensive, thing which can be pretty good if you live in a place where you'd prefer keeping your valuables away from prying eyes. While other IEMs surely have a more expensive look, you can rest assured that the materials used in Magnesium ensure they are of the highest quality, all while not stealing everyone's eyes, working well if you need to travel late at night or in new areas and if you don't want to get too much attention.

All in all, their portability reaches our golden standards for a Dynamic Driver IEM, and we consider them to be one heck of a portable if you want something lightweight, comfortable and affordable.


We have used many of our sources when compared different IEMs in this price range, and there are quite a lot of contenders do this price range, so we tried stacking Magnesium against the best of the best, to see if they have a place at their asking price and how they actually compare to those which are already known to be a great value or a great price/performance ratio.

Periodic Audio Magnesium vs Westone UM1 - When thinking about a smooth IEM with a smooth texture and a similar price point, you're probably thinking about Westone UM1, a IEM which really impressed us back when we reviewed it, by sounding quite different than one would expect from a single BA setup. When it comes to their package, UM1 comes in a less fancy package than Magnesium, with a less interesting carrying case, with a larger number of tips, but with everything else being similar. The fact that the case of Magnesium is better may be quite important, keeping in mind how exquisite it looks in that golden color. When looking at their build quality, we can note that Westone UM1 is also made out of plastic, but it is intended for a deeper insertion, it provides more isolation from the outside noise, but it has a void you can feel while wearing it, since it doesn't have any vent, and UM1 has detachable cables based on the MMCX standard. Magnesium has a larger build, has ventilation, but it has a larger body, it doesn't isolate quite as well, but it feels more comfortable for long hours of wearing it. Magnesium also can be worn both straight-down or over-the-ear. When it comes to their sound, the similarities are in the fact that both of those are warm in their tonality, but UM1 tends to be considerably thicker than Mg, considerably bassier, and its treble doesn't have the sparkle that Mg has, in the sense where Mg has a much sparklier treble, with better extension, along with a larger soundstage. Instrument separation is rather similar between the two, along with clarity and detail, although since Mg has a sparklier treble and a more lively treble, they also come as more detailed, especially in Rock and Metal music, along with Electronic. If you're looking for something to sit deep in your ears, isolate you really well from noise, and for something that is really smooth and bassy, then Westone UM1 makes a great choice, while if you're looking for something with a more natural sound, but which is still thick in its sound, something more natural and versatile, and something with better treble extension, and with a wearing style that allows for both over-the-ear and straight-down wearing styles, then Periodic Audio Magnesium makes quite an excellent choice.

Periodic Audio Magnesium vs FiiO F9 - Here, the differences start with the package, FiiO F9 really has a better package, including both a Balanced and a Single Ended cable with their F9, not to mention having a larger collection of tips included from the factory. There's quite a bit of a difference when it comes to their build styles as well, FiiO F9Pro being a 1DD + 2BA setup, with a little vent to take care of driver flex, so this isn't an issue with F9 either. F9 is made to be worn over-the-ear exclusively, they have an ergonomic shape, and a medium insertion depth, being just as comfortable as Periodic Audio Mg. Noise isolation, along with cable microphonics are similar between the two IEMs. The sound, though, is quite different between the two. FiiO F9 has a considerably lower amount of bass and mid-bass leading to a more neutral, more linear sound, with a slightly better treble extension, meaning that F9 will feel brighter, colder, more serious, compared to Mg which will seem warmer, bassier, smoother, more playful, more musical, although F9 may have a slight edge in detail. The treble is well expressed in both, and both have a nice treble sparkle, which makes both Rock and Metal music interesting, both have a good extension for this price point, and both are rather enthusiastic about music, with a similar quality to their textures as well. When it comes to their soundstage, Mg has a larger soundstage, although F9 has a similar instrument separation, and both are excellent in terms of clarity and detail for 100 USD. You should make your choice based on whether you prefer a brighter, more linear, more neutral, colder sound, situation in which you'll love F9, or if you want a warmer, smoother, thicker, more playful sound, situation in which Periodic Audio Magnesium will make a great companion for a long time to come.

Periodic Audio Magnesium vs iBasso IT01 - It is time to bring the big weapons after all, since this is the comparison most of you probably have been waiting for. It has been a rather large number of IEMs that come with detachable cables so far, and even IT01 has one, which is something some may like, compared to Mg which doesn't have detachable cables, but we'd like to note that upgrading the cable of a 100 USD IEM is out of question, and most people who may break the cables, might want to invest in better IEMs afterwards, so we want to note that having detachable cables, while even we prefer that, isn't necessarily a big issue for Mg. This being said, the cable of IT01 has a clearly more professional look, with its braided texture. IT01 has a really good build quality, with an extreme attention to detail, iBasso being known for working everything very thoroughly. Now, the package of the two is rather similar, both having a nice carrying case, IT01's being a little better, both IEMs come with a good number of spare tips, and both IEMs have a good build quality. Both IEMs have a vent to avoid driver flex, although IT01 does once in a while get some driver flex, so the vent mechanism implementation is a little different from Mg. The sound is actually quite similar between them, with both IT01 and Mg being a warm tuned IEM, with a nice clarity and detail, with a thick sound, and with a nice treble sparkle. It is easier to say what they have in common than what is different, being two IEMs with a really similar performance. Even detail levels and clarity is quite similar, soundstage size and instrument separation is quite similar, with Texturization being the only element which is slightly different, IT01 having slightly smoother textures, while Mg has slightly more enhancement on its textures. We know that iBasso uses a Graphene Diaphragm, while Periodic Audio uses a Magnesium one, being rather interesting to see how close the two are to each other sonically. Now, IT01 is really comfortable for us, but in its physical size, it is a slightly larger IEM, while Mg is slightly smaller and has the ability to be worn straight-down as well. You can also purchase a B-stock Mg for less than the price of IT01, making them a really solid value. If you wonder which is the better IEM, they are really similar. IT01 has a few interesting tricks up its sleeve like the detachable cables, and a really good attention to details in its build, while Periodic Audio has a more pocket-friendly price, and it can be worn both straight-down and over-the-ear. We recommend choosing one based on the budget you have, and on the aesthetic, considering which looks better for your aesthetic tastes, as both sound really really similar.

Recommended Pairings

Periodic Audio Magnesium is not very dependent on its source, so you won't have issues pairing it with different sources. It doesn't pick up hiss, it doesn't scale a lot with better sources, and it doesn't need the best source to sound pretty darn amazing.

Periodic Audio Magnesium + HIFIMAN Megamini - Megamini is quite the portable, yet minimalistic DAP, but it makes a nice pairing with Magnesium. It is able to give them a certain sense of space and width, larger than most sources do in this price range, along with a nice energy and overall texture. A recommended pairing for sure if you're looking for something affordable yet with an impressive sound.

Periodic Audio Magnesium + FiiO M7 - M7 is quite an interesting little device at this point, with quite a bit going on for it, like a pocket-friendly price, a very versatile connectivity, and a rather clear, detailed, linear and neutral sound. It pairs well with Periodic Audio Magnesium, giving them a very clear midrange, and a sparkly treble, taking away a little of their warmth, making them a little more balanced on an overall, compared to most other sources. If you're looking for a rather balanced sounding pairing, FiiO M7 makes a pretty compelling option.

Periodic Audio Magnesium + Cayin N5ii - N5ii isn't quite as affordable as Megamini, but now that it is on sale, it makes a pretty darn amazing device, and it even has Bluetooth. At this point Cayin managed to sort out all of the issues they had with it, besides USB DAC, which is still in works, but everything else should be up and running well right now, and with the discounts you can get for N5ii, you surely should consider this pairing. The sound is natural and slightly warmer than most pairings, but at the same time it has a good clarity and detail.

Value and Conclusion

This has been our first meeting with Periodic Audio, and we're absolutely sure we're going to be looking into their other IEMs as well, the Titanium and the Beryllium, so we're going to be writing more about them. We should note our readers, that since the IEMs all have the same body and build, we might skip over or copy over the portability and build parts, as those will be the same across all their products.

When it comes to the package, you get quite a hefty one with Mg, you have the IEMs, a good number of spare tips, and a really nice carrying case made of metal, and which will protect the IEMs from any kind of impact and pressure.

Starting with the build quality, those are some solid IEMs, with a good ergonomic design, in the barrel style, so you can count on Mg to work in both over-the-ear wearing style as well as in the straight-down wearing style. You can also count on them to have no driver flex and no microphonic noise, and Periodic Audio also made sure to include an excellent cable with them, although it is not a detachable cable.

When it comes to their sound, Periodic Audio Mg are warm, romantic, smooth in the midrange, with a sparkle in their treble to keep things interesting and exciting, and they have a good clarity and detail for their price range. The soundstage is especially large, and this can be attributed to their larger size, along with their larger dynamic drivers. The dynamics are fairly good, along with the overall tactile impact, and they have a nice extension both ways, especially for their 100USD Price Tag.

The best part about Mg is that you can even get them with a discount, if you chose to purchase a B-Stock one, which are basically the same IEMs, but with some minor aesthetic imperfections.

At the end of the day, they stand well against the titans of this price point, having something unique going on for them, and making a really nice entry in this rather busy and very crowded market segment of 100 USD In-Ear Monitors, and we can totally recommend checking them out if you're looking for a IEM with a warm sound, large soundstage, clear midrange, and with a nice sparkle in the treble. Don't forget to check out on the other products from Periodic Audio, as they have an interesting offering, and all of them will feature this same high-quality build for their IEMs.

Playlist used for this review

While we listened to considerably more songs than those named in this playlist, those are excellent for identifying certain aspects of the sound, like PRaT, Texturization, Detail, Resolution, Dynamics, Impact, and overall tonality. We recommend trying most of the songs from this playlist, especially if you're searching for new most, most of them being rather catchy.

Kishida Cult - High School Of The Dead
Dimmu Borgir - Dimmu Borgir
Obscurcis Romancia - Sanctuare Damne
Breaking Benjamin - I Will Not Bow
Manafest - Impossible
Thousand Foot Krutch - The Flame In All Of Us
Gorillaz - Feel Good Inc.
Infected Mushroom - Song Pong
Doctor P - Bulletproof
Bats - Gamma Ray Burst: Second Date
Eskimo Callboy - Frances
Incubus - Summer Romance
Maximum The Hormone - Rock n Roll Chainsaw
Rob Zombie - Werewolf, Baby!
SOAD - Chop Suey
Ken Ashcorp - Absolute Territory
Machinae Supremacy - Need For Steve
Ozzy Osbourne - I Don't Wanna Stop
Crow'sclaw - Loudness War
Fall Out Boy - Immortals
Green Day - Know The Enemy
Mindless Self Indulgence - London Bridge
A static Lullaby - Toxic
Royal Republic - Underwear
Astronautalis - The River, The Woods
Eminem - Rap God
Stromae - Humain À L'eau
Metallica - Fuel
Veil Of Maya - Unbreakable
Masa Works - Golden Japang
REOL - Luvoratorrrrry

I hope my review is helpful to you!

Stay safe and remember to always have fun while listening to music!

We wish you a happy evening!


Contact us!


  • Like
Reactions: nick n


100+ Head-Fier
Pros: Even across the spectrum with great bass and energetic treble
Cons: Mids might be a little on the thin and cold side for some
Before I begin the review, I would like to take the opportunity to thank Dan and team at Periodic Audio for allowing me to review their debut IEM lineup.
Because I can only post one review for one item at a time, the same opening paragraphs will be used for all three IEMs, with only the part on sound differing.

A short preamble before the review proper: Periodic Audio takes an interesting approach to their design philosophy. I will not bore you with details here – you can find all you need to know about their company and approach on their very neatly designed website,

Two things that I found most novel in terms of design and engineering choices, which is reflected in their company name, is that firstly, their choice of driver material is based off certain elements on the periodic table. Their opening lineup includes Mg (Magnesium driver), Ti (Titanium driver) and Be (Beryllium driver), which is their current top of the line offering. Beryllium seems to be a popular choice of material for hifi, which I recall the popular Focal Utopia headphones also utilizes.

Secondly, Dan and team have chosen to use a polycarbonate shell for the IEM housing, which purportedly reduces resonance drastically. I was skeptical at first, but after my initial impressions which I will go into later, I realized that it sounds like they are on to something.

Packaging and Accessories:

The packaging comes in a utilitarian white cardboard box, and in it contains the IEMs, as well as a selection of tips including silicone and complys in small Ziploc packs, stuffed inside the yellow gold metal container with the Periodic Audio logo emblazoned on the top shell. They have also generously included a in flight adapter as well as a 3.5mm to 6.35mm (1/4”) adaptor. Some may raise an issue with the quality of the packaging, but personally I can see that Periodic Audio has chosen to focus on the quality of the product and accessories, which they clearly delivered.


All 3 Periodic IEMs sport the same outer shell and housing, with the differentiating factor being the piece that covers the back of the IEM indicating the type of metal used. The Mg has a shinier silver back plate; the Ti has a darker hue, gunmetal type tint back plate; and the Be being the easiest to spot among the pack, having a darkish golden back plate that is quite aesthetically pleasing. The polycarbonate shell feels tougher and harder than it sounds, and is a deep black. What is also interesting is that there are no L/R indicators on the shells or the strain reliefs, but the guys at Periodic have opted to colour code the earpiece filters. The left earpiece has a blue filter, and the right has a red filter. The only downside about this is when trying to identify them in an environment that may have little light – it might be difficult to tell the difference then. I had no issues during the day though.

My only niggle with the IEM design might be the cable. The cable seems run of the mill, and does not feel sturdy enough to endure daily abuse. It has some cable memory, tends to get tangled easily and is also not very compliant during coiling and storing.

Comfort and Seal:

I found all 3 IEMs to fit well and fit quickly, with very decent levels of isolation when I’m out and about during the day. This is with the default silicone tips. Once they are in, they also do not move about easily, and I find that they sit snugly in my ears.


Sources used – Onkyo DP-X1A, Sony A15

Being the most budget friendly option at 99USD, one might be tempted not to expect very much. I would like to proffer that the Mg holds the greatest value proposition in the lineup. It was the first model I tried, and I recall being impressed upon my initial listen. What immediately stood out was the clarity of the separation (and by extension the quality and extension of the treble), as well as the quality and quantity of bass, and this is something that all 3 models seem to really excel in. Tonally the Mg is pretty much neutral and clean, with a hint of a cold tilt in the mids which causes it to feel slightly laid back in the vocals.


The low end is snappy but also hits with satisfying impact and punch. What I love most about my bass is that it needs to be tight but also produce good rumble and texture. Most IEMs either hit hard with a lot of midbass, or extend low with a lot of texture but lacks kick. The Mg ticks all the boxes in my checklist for a fantastic bass experience. Besides being snappy I can also easily hear a lot of texture and tactility in the bass response. What is so excellent about it is that when it feels like it is getting too rich and lush it moves to the next note – it never gets muddy or slow because it is just quick enough but you get all the accompanying texture and rumble. A lot of bass information is also conveyed, such as the timbre of the bass drum or the tone of the bassist’s notes, all of which I suspect is helped by the separation, which I will talk about later.


The mids are focused front and center, but can tend to sound a hint on the thin side in terms of note thickness. This seems to be the only ‘weakness’ of sorts in terms of the tuning, however, this boils down to personal preference. The Mg’s mids lends itself to a slightly more analytical sound, which provides plenty of clarity, but tonally it sounds a little colder than what some might consider natural. However, I must also acknowledge that this may also be a result of my bias, because I tend to zoom in on mids and like my vocals to be a tad warm sounding. With all that said, it is only slightly colder, and this is also with reference to the other models in the lineup. Many would find that the mids are perfectly fine depending on one’s personal yardstick for vocal timbre.


One other defining factor of the Periodic Audio lineup is the speed, definition and extension of the treble across all three models. For the Mg I felt that it had a quick decay and brilliant shimmer, resulting in plenty of treble micro-detailing. I could pick out each hit in rapid successive crashes of complex cymbal work – and the amazing thing is that it is neither harsh nor sibilant. This is remarkable because I consider myself to be very sensitive to treble, and looking at the graphs Periodic has provided I was mentally preparing myself to have some issues with the Mg and the Ti, but like most acknowledge, data and frequency graphs only tell half of the story. How they actually sound really pleasantly surprised me when I found that the treble was clearly one of its strong suits. With that said, the treble, in line with the mids, may also leave some feeling like it tilts toward a colder tonal profile, and not have the very brassy tone that some might desire.


Staging is decent on all three axes, with a little more width than depth or height. Even though some may consider the Mg on the intimate sounding side, its strength in separation leaves the listener never feeling like the music is congested or muddy, and this is most perceptibly demonstrated in complex instrumental arrangements, when one can pick out any one melodic or harmonic line and follow it easily. Imaging is average, and one can place instruments within the space of the stereo image thrown. The audio field is roughly a semi-circle extending a little from the sides of your ears reaching out to the space in front of your eyes. The separation and layering, nevertheless, for the Mg’s price range, is clearly outstanding, and makes for an almost irresistible value proposition.


Periodic Audio has served up a potent combination of IEMs suited to different budgets and tastes in its entrance to the audiophile market. One can hardly go wrong with either the Mg, Ti or the Be. For my personal preferences I’d pick the Be any day, because I’m biased toward a musical tuning that has focus on engaging mids and quality bass. But if one is on a budget, the Mg comes with a high recommendation. I find the Ti more of a specialist – if you love rock or metal, or genres that tend more toward a v-shaped tonal profile then the Ti would be perfect. Well done, Dan and team at Periodic Audio!


  • 20170529_211807_HDR.jpg
    4.7 MB · Views: 0