7Hertz Timeless

General Information


  • Double-sided Array N52 Magnet and Ultra-thin Diaphragm14.2mm Planar Driver
  • CNC Aluminum Shell
  • Detachable MMCX Cable
  • Lightweight and Comfortable

Latest reviews


New Head-Fier
Great 14.2mm planar driver Near V shape tuning with 8khz peaks.
Pros: - Fun and interesting music.
- Extended treble.
- Bass augmentation.
- Very good separation and resolution.
- Equalization can be taken well.
- A planar has excellent resolution and speed.
- A bass that sounds warm and full.
- Fit & accessories.
- Easy to drive regarding it is a planar.
Cons: - Mid bass lackness sometimes seen.
- Soundstage lacks width & slight depth.
- Imaging is kind of weak could be more precise.
- Poor microdynamics.
- 8 khz peaks.

If you want crisp sounding IEM with fun & don't bother about soundstage you might give it a try.
Try to get a aftermarket pure copper cable to tame 8khz treble peak & roll tips that can reduce treble & just pair it with a warm source to get the best result :D


Aluminum case
Wide assortment of silicone tips in good cases
MMCX cable
Documents and QC card


left (HAKUGEI Lucky voice Hi Fi cable) on right side stock cable


Sound Impression :

source: Dongle: xduoo link2 bal
desktop: ifi zen dac v2+ ifi zen can


Cable & eartips rolling :
For cable i used HAKUGEI Lucky voice Hi Fi cable which is 7N OCC copper 2core cable.
Cable is very comfortable :D due to cotton fiber shield outside .

using spinfit w1 , ZEOS Render Memory Foam Eartips , Final e seris silicone eartips
I got the best result with Spinfit w1 Eartips cause it elevated bass quantity.


From left ZEOS Render Memory Foam Eartips , spinfit w1 ,Final e seris silicone eartips .


The sub-bass is very dynamic.
The decay and attack are both fast with warm thicker tonality.
The Timeless sound clean with no audible bass bleed .
Snare hits have a dense leading edge as a result of this rising, which also thickens the bottom end.
EDM tracks benefit from the bass's deep extension and pleasant sub-bass rumbling.
This enhances the upper mids' clarity and creates a very pleasing layering effect in the sound.


Electric guitars, piano, brass instruments, flute, and other instruments sound fairly well.
There is a good amount of layering and detail in the mid frequencies.
it's definitely not the most natural sounding thing I've ever heard, but overall it's a great balance.
Forward mids with good male vocal .
However sometimes it might give a harsh in female vocal & not smooth as male vocal.


Timeless may sound bright and peaky to certain people due to its peak at 2 kHz and 8 kHz.
The treble's extension is its best feature.
Triangles, hi-hats, and crash cymbals all degrade over time fast.
Upper-treble notes may still be heard shimmering,using copper cable hepls to mitigate this problem.
It has shrill sound with more ss's and tt's pronounced in the mix, but if u use any good copper cable it tames .
Being v shaped in sound, The Timeless do sound detailed and fine sounding disregarding that much bass.


The Timeless are average in staging and imaging, for example.
Even though the stage height is = good, the stage width is narrow.
In contrast, imaging sector lacks to locate instruments in ordinal directions.
Microdynamics are little poor.
Speed is superb cause it is a planar driver.
pair with warm source to get the best outcome .
I wouldn't recommend to play fps competetive online game with these cause imaging is kind of compresed on these you need sharp imaging for online gaming , but for story based offline game you might give it a shot.


Bass: 4.5/5
Mids: 4/5
Treble: 4.3/5
Imaging: 3.7/5
Staging: 3.6/5
Dynamics/Speed: 4.6/5

Conclusion :

Timeless IEMs are definitely worth the money.
They provide a natural, pleasant sound that is engaging and enjoyable despite having subpar technical performance and tone qualities.
The way 7hz has approached a planar is incredibly distinctive, and they have discovered so much brilliance in this IEM.
where the magnificent quality of the sounds it produces is so long-lasting and resolving with good copper cable with warm sources .


New Head-Fier
Might not be so timeless after all
Pros: -Soundstage is solid
-Details are solid
-Decent tuning
-Good all around
-Great fit at least for me(very flush to my ear I could lie down on these if I wanted to)
Cons: -Probably not great for the price(at least anymore)
-Although the details are good they are only a step above many of the 20$ IEMs that are out these days
-mediocre separation and imaging
-I don't like the mmcx connectors (they get kind of loose? not sure I lose sound on the left ear and have to yank it out and re-plug it)
This will be my first review on head-fi so your feedback would be greatly appreciated! (I might use some of the wrong words but to be fair words are only here to convey meaning and that's what ill be using the words I'm using to do.)
The timeless is a very solid IEM and it will be my baseline for almost everything I review moving forward I got these alongside the moondrop Stellaris so they will be used as a comparison very commonly additionally I have many of the 20$ iems (chu, salnotes zero, wan'er, and cca cra) i have tested all the sets extensively ab testing between them and writing down my thoughts.


I do not think presentation matters but its always nice so here are some hastily taken pictures of my unboxing experience all without me turning my phone camera sideways so it wastes a ton of space!


After taking off the first layer there is a nice white box opening that you have the aluminum box with the magnet and you open it to see the timeless inside its a nice touch it's in the box so neatly you wonder how they actually got it in there like that I was sure that if I just closed the box it wouldn't fit anymore and it's kind of witchcraft, however, if you look at the last image you will see something weird in my pack of ear tips, one of the pairs are not actually not the same no idea how that happened but it doesn't matter because all the ear tips suck anyways not a single one fit in my ear properly to this day I use one of the ear tips that came with the Stellaris or chu's.

this is a little bit of a side tangent but honestly, if you get these and you have ears like mine I seriously recommend getting ear tips that fit I found that soundstage and imaging are heavily affected by ear tip fit I cannot stress this enough if I hadn't gotten other tips I might genuinely have been disappointed in this set instead of suddenly picking iems as a serious listening medium.

it's nice to know that they packaged it nicely for 200$ but honestly, the ear tip thing kinda threw me off.

there isn't much to complain about, I would say they are tuned well but I don't think they do anything really out of the ordinary unlike the Stellaris which has the kind of nasally honky 1k peak, these work fine without eq, they don't fatigue me and I don't notice anything notably out of the ordinary after multiple days of listening. i will say honestly the bass-midbass sounds a little weird to me but in general, I use very refrencey headphones like the akg k701 and the v moda m100 masters(i know the originals were v but the masters are not. funny fact is I only went onto this forum because I wanted to eq those to be less referency and got sucked into the iem rabbit hole)
ill let other people who know more do the talking for tuning in IEM's

I lack the tools to measure these and so ill post a squig graph. thanks to gizaudio and also his reviews


Because I am pretty new to IEMs it's pretty difficult to tell if something is really amazing compared to other IEM's but something I have listened to a lot of are headphones mostly closed-back headphones this is where I think moving forward I will reconsider this.

At 250$ USD the v-moda m100 masters are by no means cheap headphones even though I got them roughly half off, the same is true of the akg 701k which on the akg website is 520$ USD which seems inaccurate (they are 230cad on amazon.ca although when I got them roughly 3 years ago I think they were around that price also got it on sale for roughly half maybe 60-70% price) this is also the same for the Audio-Technica ATH-M50 for 150$ all of them theoretically compete with the timeless in value this is where I have to wonder you would think that an IEM could not come close to the performance of a real big driver headphone and you would be both so right and so wrong at the same time.

Soundstage and imaging:
the timeless is so very close beating all of these devices in at least one category. (well actually not the akg 701k but I digress) first is the soundstage which I must say is much better than expected the way I measure this is kind of weird but basically I close my eyes and try to guide my hand to where I "feel" the sound, like when you wake up in the morning reaching for your phone or clock I then grab a ruler and measure this and yes this is jank and I know very unscientific but my results tend to be very consistent and is honestly better than just I feel its better or something like that. maybe someone can compare and take notes with me :).
Basically the timeless just outright beat the M50's I know the community likes to make fun of people who buy this headphone but when I got it it was my first "audiophile" quality headphone and thought it was great but compared to this it's just not even a question it beats them in details and imaging too but not surprising it is cheaper right?

if you want some exact numbers I "measured" (big air quotes) roughly 10cm of staging up and down for the timeless and 4cm to the sides compare this to the M50 which is roughly 4cm up and down and 4cm left and right, I will say the soundstage is a little muddy the edges don't sound crisp I don't even know if this is possible on closed ear much less IEM's but yeah it will never beat an open back the akg701K go longer than my arms can reach above my head.
a better comparison would be the Stellaris which loses to it a little bit 8cm up down, 2cm to the sides.
the imaging is a little fuzzy but I don't listen to much music where instrument direction really matters my go-to is listening to music by joe Hisaishi for imaging
the soundstage is something I deal with much more and ill link my little playlist that I put up its on youtube music but is missing a lot of songs I have flacs of.
YouTube music(slightly higher quality not as good as Spotify but my music doesn't always show up there)


just as a note that these songs are just ones I think particularly show off soundstage well I mostly listen to jazz, rock, jazz fusion, mathrock and a lot of "jpop" and city pop although honestly, this is pretty non-specific I feel like What does jazz even mean anymore if everything miles Davis has produced is all jazz i don't think it means a whole lot at this point.

the details for the timeless are solid and clear I feel they just barely edge out my v-moda m100 masters it's hard to say without really going into specifics but let's just say there are certainly moments where the timeless's resolution and ability to push detail is lacking I don't know if the Stellaris is crazy or what but in many songs where there are multiple guitars with distortion the guitars almost always gets completely lost, but this completely goes over the fact that full-sized drivers are also unable to fully display the noise of the songs if I had to choose examples in the song "tower of flower" at 0:35 there is a guitar with distortion playing chords and a piano playing chords and drums and cymbals clashing in the background with prominent singing in the front on the timeless the guitars are reduced to just distortion in the right ear and you can't even hear them strum them and they are missing the notes on the keys unlike on the Stellaris but to be fair nothing else I have comes even close to the Stellaris in this one factor and i doubt most people are using them for something like this these honestly are edge cases but I really like songs like this where its just a bunch of noise a lot of vocaloid is like this for example but I would assume this is fine for most people or even "perfect" another really clear moment where this happens is in citron at 1:35 songs will be linked once again
honestly, its performance is only a little above the cca cra maybe not even by that much its definitely noticeably better than 7hz zero and tangzu waner

youtube music


neither playlist is complete but that's alright ill be adding more as time goes on and my other testing list will be linked here

youtube music


This is what I assume a good IEM sounds like I think the thing that blew me away was the soundstage amazing compared to the other cheaper iems and roughly again air quotes "2cm better" in both directions than the Stellaris and "up to 8cm" more than the 20$ IEMs I would recommend these for sure but are they value? I don't think so the Stellaris as said performs greatly better in detail this comes with a massive caveat of tuning and a small dip in soundstage but most people don't exactly buy IEMs for the soundstage that being said they don't buy it for details either is it 180$ better than the 7hz zero, maybe but is the Stellaris 80$ better than the 7hz zero, absolutely. This makes me question what about the hexa what about the aria's what about the talos, etc.

yeah, I think the timeless is good in price, as in yeah that's worth 210 dollars but that doesn't mean it's good value anymore, in fact, I might have to come back to this when I get some more iem's under its price bracket.

Thank you for reading!
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noticed numerous small mistakes after posting but I can't seem to edit


New Head-Fier
Review Of The 7Hz Timeless
Pros: Fun and engaging sound
Treble extension
Bass extension
Great resolution and speed of a planar
Warm and thick sounding bass
Cons: Resolving power in the bass
Vocals aren't very detailed but great
Layering and Imaging

Review Of The 7Hz Timeless



The 7Hz Timeless is a planar magnetic IEM by a Chinese company 7hz. This is their first attempt on a planar magnetic IEM which is a success as they are one of the best planar IEMs, maybe in fact the best IEM under $300. Till date there is no other IEM under $300 have better technical resolvability. Other than the 7hz Timeless they released i77, i88, i99 with their mini model as well as their recent launch 7hz Eternal. None of which I have auditioned or owned. Coming back to the Timeless, these are priced at $220-$225 at the following below:-


And about Rs 18,000 at the following below:-



*This is my own purchased unit, each and every thoughts below mentioned are my personal own thoughts and they are not fiddled with any outside influences.
*I do not own or have heard any other planar IEM's, so these are reviewed on their own performance.
*I will be comparing these with couple of my favorites Yume Midnight and Moondrop Blessing 2.
*I will be referring these IEMs to as 'Timeless' for the rest of the review.
*And at last I will only be reviewing the Timeless on the basis of their performance, I do not care what these are made of or packaged with when newly purchased unless it affects the sound in any sense what so ever.


Timeless is a full planar magnetic IEM which houses a 14.2 mm planar magnetic driver which have a double sided array of N52 magnets and a 2mm ultra thin diaphragm. These have an impendence of 14.8 ohms and sensitivity of 104db. The frequency response is from 5Hz to 40kHz.


Timeless have a V-Shape sound signature, as it houses a planar magnetic IEM, the response you get from these is fast, resolved and detailed. They have great treble extension and great resolving power and at the same time being warm and natural sounding.



The Timeless's treble have forward treble presentation. It has shrill sound with more ss's and tt's pronounced in the mix. although being very well extended in the treble still feels soft. I find the air in the blessing 2 a little bit dry than the timeless. Also Moondrop blessing 2 have less presence in the treble than the timeless. Every element in the treble region works very well and provide better tonal performance and technicality when it comes to Moondrop blessing 2. To be honest I find the blessing 2 much better tuned. Timeless is overall better in every aspect than the female vocals while comparing to the Yume midnight. The female vocals have more natural reach when it comes to blessing 2. When it comes to a little more happening in the treble, the vocals are drowned in treble with timeless whereas blessing 2 performs eloquently and precisely which results in more details and resolution. Obviously they both are tuned very differently. Although the tonal integrity of Moondrop blessing 2 in sound is not lost overall except the dryness felt in the treble air above 8-10k region and I find the characteristics to keep it all along the spectrum wonderfully, where the timeless being v shaped in sound. The Timeless do sound detailed and fine sounding disregarding that much bass. I agree on Timeless not being clean or analytical but it doesn't want to be.

Mid Range

Like with the treble the timeless is very much forward with the mids especially the upper mids. The upper mids are shouty and really hot. Everything is so in front in your face (figuratively speaking) that the sound is intimate and close with presentation. Every element tries to take the front seat. there is really no placing or separation of instruments or vocals in the mix. There is more space for every element to breathe and play their role while listening to blessing 2 but not with timeless. The vocals sound lean and feels like at higher octaves the female vocals distort. There is a definite stage in blessing 2, there is more happening in the above and below when comparing to the timeless. Female have a more natural feel to it with Yume midnight. Whereas the lower mids feels fuller more upbringing, I find the lower octaves of female vocals in this region while listening to timeless much better than in the upper mids and treble. The overall presentation is better in all aspects in this region while listening to timeless.


When it comes to mid bass timeless sound thick and slams really hard, although being this thick sounding the lower octaves of vocals drowns due to the over bloated bass. the sense of humming on timeless have a good amount of note weight almost feels musical and natural. Very submissive bass response. comparing to the Moondrop blessing 2 and the Yume midnight the bass they produce is very controlled never takes on charge like timeless and never does feel like complete mostly in Yume midnight. The bass acting on the timeless hits fast but even though it tries to recover or decay it gets messy but maintains it's harmonic values. The Yume midnight and the Moondrop blessing 2 have a great stage for every element to breathe where as sounding musical I find it a little congested. In the bass region, when it comes to timeless the mid bass have the authoritative hand while sub bass goes with it. The sub bass extends very well but Yume have much better extension. Blessing 2 has very well and detailed bass overall.

Technical Performance

Timeless exceeds in every aspect in technical performance comparing to the Yume midnight. The Moondrops are a level up from Timeless. Timeless being a planar magnetic IEM, it has all properties of what a planar does. Being very precise have a good layering separation and soundstage and also trying to achieve a quarter in space in doing something new in bass region becoming what a planar wasn't expected to be. There is some kind of power and energy which is very unique to ears about the planar
especially when it it is coming from an IEM.


Soundstage, Sound Imaging & Separation

there is a sense of wide separation between instruments and vocals in regions where you might not find it happening. I am not saying it is the best coming to an iem in this price range, for that check out the final audio a4000 in stage department they will blow your socks off, but they are really good in staging. The layering is okayish to be honest, while comparing to the Yume midnight and the Moondrop blessing 2. The separation is quite the level of Yume midnight, not too spacious sounding nor too close. Although very easy to point out where the sound is coming from. The presentation is not entirely all around like the blessing 2. but better than the Yume midnight.

Speed & Resolution

The planar, like I said before are very fast in presentation, the details retrieval is astonishingly good. the notes hits really hard with density and decays smoothly. It doesn't precisely execute sounds the way it should but tries to keep it clean. But for the price they come in they have the best resolution under $300. Although for a planar to keep up with this profound sense of warmth and tonality while outproducing this much technical performance is marvelous.


Definitely Timeless are worth the price, they are engaging and fun sounding IEMs with sub par technical performance and tonal attributes which makes it sound more natural and warm. 7hz's take on a planar is really unique and they have found so much excellence with this IEM. Where it's sublime nature of producing sounds so resolving with extended length

Sources And Tracks Used



Apple XS Max
Apple Dongle Dac
Shanling UA1 Pro
Apple Lossless
Localy stored Flac and Wav Files


Curtis Mayfield - Pusherman
Earth, Wind & Fire - September
Earth, Wind & Fire - Let's Groove
Boston - More Than A Feeling
Fleetwood Mac - Everywhere(Remastered)
Toto - Africa
The Police - Every Breath You Take
George Benson - Affirmation
Daft Punk - Doin' It Right
Daft Punk - Derezzed
Daft Punk - Tron Legacy (End Titles)
GOJIRA - Amazonia
The Mars Volta - Inertiatic ESP
Fergie - Glamorous
50 Cent - In Da Club
Jay Z - Holy Grail
Erbes - Lies
Nitti Gritti - The Loud
Juelz - Inferno
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New Head-Fier
While it handles well, is good to look at & seems like it is well suited to the product, I have rapidly discovered that the supplied stock cable is choking the life out of the 7Hz Timeless. A quick switch to the reasonably priced Tripowin Altea cable bears this out immediately! Better bass, better treble extension & definition.


500+ Head-Fier
While it handles well, is good to look at & seems like it is well suited to the product, I have rapidly discovered that the supplied stock cable is choking the life out of the 7Hz Timeless. A quick switch to the reasonably priced Tripowin Altea cable bears this out immediately! Better bass, better treble extension & definition.
I've been listening to my Timeless non-stop for the last month or more. I have tried them with pure silver cables and yes, it can extract more upper range, definition, and tighter (I would not say "better") bass. However, there is excellent synergy with the stock cable that cannot be ignored. I do not consider the stock cable to "choke" the Timeless sound. On the contrary, it is complementary to the sound and gives it a much broader, fuller range of dynamics that creates a much more immersive listening experience. Frankly, I think the team at 7Hz did a magnificent job at pairing up these IEMs with the cable. Now, is there a "better" cable out there that can maintain the character of the Timeless while increasing technicalities and tonality? Probably. But remember, this is a $200 set. If you want to pair these IEMs with a $1000 cable, I would hope it would improve the overall sound. But I personally believe that the stock cable is a terrific match for the Timeless right out of the box.

Tip selection also has a significant impact on sound quality, so that needs to be considered as well. For my ears, and my tastes, the CP100+ tip from Spinfit seems to extract a high level of detail while maintaining solid bass quantity and quality, and matches with the stock cable very well.

Let's not also forget that the source, DAC, and amp all play a part in overall sound quality. There are many variables upstream that most people don't take into account when they "review" output devices such as IEMs, headphones, or speakers. So, overall, in my experience the Timeless is a revelation in IEM technology, including the stock cable. I cannot wait to hear what 7Hz comes up with next. Bravo!