Reviews by torpid

Intro/Disclaimer​

2024 has been an unbelievable year for budget IEM releases. Today I will be reviewing the KZ AS10 Pro, the successor to the original KZ AS10 which was released almost six years ago. For those that don’t know, KZ is one of the pioneers of the budget IEM scene and has been around since 2008. They have released quite a number of IEMs over the years under the KZ or CCA branding. The AS10 line is configured with 5BAs per side, three for highs/ultra highs, one for mids, and one for lows.

This set was provided to me by Linsoul in exchange for my honest opinion. No money exchanged hands, and I was not asked to say anything specific. All thoughts and opinions below are my own and not influenced by any external party.

My impressions are solely based on what I hear with my own two ears as this is a very subjective hobby. My ratings are also based on how I think this IEM fares against others in the same price category.

My primary litmus test when it comes to audio gear is whether or not vocals and instruments sound natural/organic. Regardless if the IEM has the biggest bass or the most technical treble. If it doesn’t sound natural to my ears then it’s a red flag. SPOILER: The AS10 Pro definitely delivers on this front.

Links​

Linsoul website: https://www.linsoul.com/products/kz-as10-pro
Linsoul Aliexpress Store: https://ddaudio.aliexpress.com/store/2894006
Linsoul USA Amazon Store link: https://www.amazon.com/s?me=A267P2DT104U3C&marketplaceID=ATVPDKIKX0DER

Packaging and accessories​

The AS10 Pro comes in the standard small cardboard sleeve packaging that you see amongst all other KZ/CCA IEMs. Inside, you will find the IEMs with foam tips installed, along with 3 pairs of KZ silicone tips and a QDC 2 pin cable. The accessory package is quite lackluster for a $68 IEM in 2024. The cable was the biggest disappointment, as it’s the same thin plasticky cable included with all KZ sets.

Build, Comfort and Fit​

The build of this IEM consists of a 3D-printed resin shell with a brushed aluminum faceplate. The shell is of medium/large size and is similar to other KZ/CCA IEMs like the Hydro, Rhapsody, and Trio. The IEM fits fairly well in my ear once I got the proper seal but those with smaller ears should exercise caution as the shell is quite large. Overall, the build quality of the AS10 Pro seems top notch.

Specs​

The KZ AS10 PRO features 5 Balanced Armature drivers: 22955 Low Frequency BA, 29689 Mid Frequency BA, 31736 High Frequency/Ultra High Frequency Array BA, and 30019 High Frequency BA.
Frequency: 20-40000Hz
Impedance: 26Ω
Sensitivity:109dB
Pin type: QDC 0.75mm
Plug type: 3.5mm
Cable type: Silver-plated cable
Cable length: 120±5cm
PRICE: $68.99 USD

Sound​

Sources Used
KZ AS10 Pro w/ Tangzu Sancai balanced tips <- Chord Mojo 2 <- MacMini M1 <- Apple Music Lossless

Songs played






Initial impressions (before brain burn in)
I usually like to jot down my first impressions within the first few minutes of listening to a new IEM. Because, believe it or not, brain burn-in is a real thing.

Upon listening to the first few songs in my library, I was immediately impressed with the large soundstage and excellent vocal clarity. The timbre and tonality on the AS10 Pro is really good for an all-BA set. Male and female vocals are forward but not overbearing. Some songs can come across shouty but that is very artist dependent. There is quite a bit of upper treble energy but I did not find it too sibilant or piercing. It’s pretty clear that KZ was going for a V-shaped sound signature with this set.

Lows (Bass)

• Good sub bass extension and rumble for an all-BA set
• Engaging midbass that is not overbearing
• Well textured and nuanced

Mids

• Vocals are pushed forward in the mix
• Male vocals have a nice warmth and richness
• Female vocals are energetic but doesn’t cross the line
• Energetic and engaging upper mid range

Highs (Treble)

• Good clarity and instrument separation
• Lot of energy in the 6-10k range
• Some songs can come off as too spicy
• High hats and cymbals can come off metallic

Technicalities (Soundstage/Separation/Imaging)

• Excellent instrument separation and imaging
• Good micro-details
• Soundstage is done very well
• Great coherency for an all BA set

Comparisons​

I’ll be comparing the AS10 Pro to another all-BA set, the DUNU SA6 MK1($549) and the single-DD Simgot EA500LM ($79) (Graph Credit: Paul Wasabi)


DUNU SA6 MK1

I know this is not a fair fight, but hear me out. It’s not as one sided as you might think. The DUNU SA6 came out in 2021 to much praise and fanfare but a lot has changed in three years (which is like ten in IEM world).

Upon initial comparison, you can tell that the SA6 has the more safe tuning. Especially when it comes to the treble. It also has more presence in the midrange compared to the AS10 Pro. Leading to more textured and nuanced vocals. Instruments like guitars and drum snares also sound a bit more natural.

The SA6 also has a bass switch that one can use to increase that part of the frequency range. With it on, the bass on the SA6 definitely has more oomph. With it off, I would say the bass quantity and quality are on par with the AS10 Pro.

Now, where does the AS10 Pro excel? Soundstage and imaging. It’s not even close. The AS10 Pro presents a much larger soundstage along with pinpoint imaging. I’m able to pick out instruments in the mix with ease. If you want to squeeze every last ounce of detail from your music then I would definitely steer you towards the AS10 Pro.

Winner: Tie - The tuning of the AS10 Pro is not for everyone but you can’t ignore the value proposition compared to more expensive all-BA sets like the SA6. For a fraction of the price, you are getting similar performance if you can handle the treble.


Simgot EA500LM

The next set I’ll be comparing the AS10 Pro to is the Simgot EA500LM, which is considered by many in the community as the benchmark for an under $80 set with great midrange and treble extension.

Looking at the graph, you can see that the EA500LM has a much more filled-in mid-bass and lower midrange. This along with the fact that it’s a dynamic driver, provides a much more enjoyable experience when listening to modern music genres. The bass reproduction is just so much more nuanced and textured coming from the EA500LM.

The midrange between the two are quite comparable, both have similar amounts of ear gain through the upper midrange. However, vocals sound a bit more natural on the EA500LM and less shouty.

Treble is also quite comparable, but I would say the AS10 Pro wins out in terms of sheer resolution and imaging. The EA500LM is no slouch but one-DD is no comparison to 5BAs in terms of resolution.

Winner: EA500LM - If you are after sheer resolution, then I would pick the AS10 Pro but for everything else EA500LM is the better choice.

Conclusion​

I would be lying if I said that I didn’t have many high expectations coming into this review. However, suffice it to say, I was pleasantly surprised. KZ really did a good job tuning the AS10 Pro, and although I’ve never heard the original, everybody agrees that this iteration is better on all fronts.

It’s quite remarkable how good the under-$100 IEM market is these days. If you are looking for a V-shaped all BA set with great tuning then you can’t go wrong with the KZ AS10 Pro. Be warned: the cable is quite bad so definitely plan on upgrading it if you decide to get this set. With that said, for under a hundred dollars, I think you can get yourself a very nice pair of IEMs for not just listening to music but also gaming. The soundstage and pinpoint imaging will be perfect for tactical shooters.

Hope you enjoyed this review, let me know in the comments if you have any questions.

Intro/Disclaimer​

2024 has been a crazy year for budget IEM releases and EPZ definitely wanted to be part of the action. The EPZ Q1 Pro is a $37 single DD IEM that is tuned following the Harman 2019 curve. AKA. V-shaped sound signature.

This set was loaned to me by a good friend and fellow IEM reviewer Jaytiss. Thanks again for the opportunity. All thoughts and opinions below are my own and not influenced by any external party.

My impressions are solely based on what I hear with my own two ears as this is a very subjective hobby. My ratings are also based on how I think this IEM fares against others in the same price category.

My primary litmus test when it comes to audio gear is whether or not vocals and instruments sound natural/organic. Regardless if the IEM has the biggest bass or the most technical treble. If it doesn’t sound natural to my ears then it’s a red flag. SPOILER: The Q1 Pro definitely delivers on this front.

Packaging and accessories​

Standard cardboard packaging that you see amongst all other IEMs around this price range but it’s what’s inside that matters. Along with the IEMs, you get three pairs of silicone tips and a decent 4N Single Crystal Copper cable . You have the option of a 3.5 with no mic, 3.5 w/ mic, or a USB-C termination.

Build, Comfort and Fit​

The build of this IEM consists of a 3D-printed resin shell with a beautiful blue jade faceplate. The shell is of medium/small size and mimics a more custom mold than more generic ones. It fits extremely well in my ear and did not experience any discomfort after hour long listening sessions. I am extremely impressed with the build and design of the Q1 Pro.

Specs​

Product name: Q1Pro
Main process: 3D printing cavity + hand-painted panel
Unit: 10MM dual cavity dual magnetic circuit PU+LCP liquid crystal molecular dome diaphragm
Frequency response range: 20Hz-20Khz
Sensitivity: 100db(+-3db)@Vrms
Impedance:32Ω@1kHz
Total harmonic distortion: <0.5% (@1kHz, 100db)
Plug diameter: 3.5mm
Headphone plug type: 0.78MM double pin
Wire: 4-core single crystal copper
Cable length: 1.2M

Sound​

Sources Used
EPZ Q1 Pro <- Chord Mojo 2 <- MacMini M1 <- Apple Music Lossless

Songs played






Initial impressions (before brain burn in)
I usually like to jot down my first impressions within the first few minutes of listening to a new IEM. Because, believe it or not, brain burn-in is a real thing.

Upon listening to the first few songs in my library, I was immediately impressed with the vocal forward presentation and natural timbre of instruments. The timbre and tonality on the Q1 Pro is spot on. Male and female vocals can sometimes overshadow the instruments in the background due to its forward presentation. Male vocals can occasionally sound shouty depending on the artist and mix. The treble is well extended but lacks sparkle and air.

Lows (Bass)

• Sub bass has good extension if the song calls for it
• Mid bass lacks impact and weight
• Modern music will feel not as exciting

Mids

• Vocals are pushed forward in the mix
• Male vocals can become shouty
• Female vocals are energetic but doesn’t cross the line
• Lower midrange is sterile

Highs (Treble)

• Lacks sparke and air
• Smooth and detailed without being sibilant
• Inoffensive treble

Technicalities (Soundstage/Separation/Imaging)

• Below average layering and imaging
• Lacks micro-details
• Soundstage is average
• Great coherency due to single transducer

Comparisons​

I’ll be comparing the Q1 Pro to the Kinera Celest Wyvern Abyss ($30) (Graph credit: Paul Wasabi)

Kinera Celest Wyvern Abyss

Compared to the Q1 Pro, the Wyvern Abyss is quite similar in both price and tuning. You can hear and see that both follow the Harman 2019 target almost exactly. However, the bass on the Wyvern is definitely more pronounced and impactful. Giving songs that have bass a much more exciting presentation.

The midrange on the Wyvern is also a step up in clarity and resolution. Male and female vocals take a step back compared to the Q1 Pro but still sound great in the mix. A much more balanced presentation.

The treble extension on the Wyvern is also much more balanced and not as peaky.

Winner: Wyvern Abyss

Conclusion​

EPZ did a good job with the Q1 Pro. They created a well-tuned Harman set with excellent timbre and tonality. People will definitely enjoy the more forward vocal presentation if you listen to a lot of vocal centric music.

While it may not provide the best detail or technical performance, it offers a comfortable and enjoyable listening experience, particularly for those who prefer a non-fatiguing sound.

As long as you understand what the Q1 Pro can and cannot do, I think you will be quite happy with this budget set.

Intro/Disclaimer​

2024 has been a crazy year for $100 and under IEM releases and Tanchjim definitely wanted in on the action. For those that don’t know, Tanchjim has been around the ChiFi scene for quite a while and are known for their well-tuned single DD IEMs. The new Tanchjim 4U is no exception. Read on to learn more about this $69 user-tunable single DD IEM.

This set was loaned to me by a good friend and fellow IEM reviewer Jaytiss. Thanks again for the opportunity. All thoughts and opinions below are my own and not influenced by any external party.

My impressions are solely based on what I hear with my own two ears as this is a very subjective hobby. My ratings are also based on how I think this IEM fares against others in the same price category.

My primary litmus test when it comes to audio gear is whether or not vocals and instruments sound natural/organic. Regardless if the IEM has the biggest bass or the most technical treble. If it doesn’t sound natural to my ears then it’s a red flag. SPOILER: The Tanchjim 4U definitely delivers on this front.

Packaging and accessories​

Tanchjim always excels in their packaging and presentation of their products. The 4U is no exception. Upon opening the square box you will find the IEMs, 6 sets of tips(wide/narrow bore), silver SPC cable, carry pouch and of course the mini screwdriver to adjust the tuning switch. The cable only comes in a 3.5mm termination.

Build, Comfort and Fit​

The build of this IEM is quite sturdy and beautiful at the same time. The shell is made of a metal alloy and has a polished front faceplate with the words ‘Tanchjim’ on the left and ‘4U’ on the right. The shape of the IEM is also quite unique, something that was developed in house it seems. It fits extremely well in my ear and did not experience any discomfort after hour long listening sessions. I am extremely impressed with the build and design of the Tanchjim 4U.

Specs​

MODEL: TANCHJIM 4U
IMPEDANCE: 32Ω
SENSITIVITY: 122dB
FREQUENCY RESPONSE: 8Hz – 48KHz
CABLE LENGTH: 1.2M
PIN TYPE: 0.78mm 2-PIN CONNECTOR
PLUG TYPE: 3.5mm
DRIVER UNIT(S): Dual-Chamber DMT-4 Ultra LCP Diaphragm Dynamic Driver.

Sound​

Sources Used
Tanchjim 4U <- Chord Mojo 2 <- MacMini M1 <- Apple Music Lossless

Songs played






Initial impressions (before brain burn in)
I usually like to jot down my first impressions within the first few minutes of listening to a new IEM. Because, believe it or not, brain burn-in is a real thing.

Upon listening to the first few songs in my library, I was immediately impressed with the excellent timbre and tonality, Tanchjim’s speciality. Male and female vocals are lifelike and are presented perfectly in the mix. Not too forward or recessed. The bass tuning is adjustable by turning the dial behind the IEM. My preferred settings were ‘Atmosphere’ and ‘Pop’ (more on this below). Overall, this is a very coherently tuned IEM with a safe sound signature. You won’t experience any shoutiness, sibilance, or treble fatigue on this set.

Lows (Bass)

• Good sub bass extension and rumble when switched to ‘Atmosphere’ but it throws off the balance of the IEM
• ‘Pop’ would be my preferred setting for most genres of music
• Engaging midbass that is not overbearing
• Well textured but a bit flat
• Not for bassheads

Mids

• Both male and female vocals are presented very naturally
• Male vocals have a nice warmth and richness
• Female vocals are energetic but doesn’t cross the line
• Excellent timbre across all instruments (both real and electronic)

Highs (Treble)

• Safe with decent extension
• Smooth and detailed without being sibilant
• Lacks a bit of sparkle up top

Technicalities (Soundstage/Separation/Imaging)

• Good clarity and instrument separation
• Timbre over technicalities
• Average soundstage
• Great coherency due to single transducer

Comparisons​

I’ll be comparing the Tanchjim 4U (Pop) to the Kinera Celest Wyvern Abyss ($30) and the Kefine Delci ($75), both single DD IEMs. (Graph credit: Paul Wasabi)

Kinera Celest Wyvern Abyss

Compared to the 4U in Pop mode, you definitely notice the increased sub bass extension and rumble on the Wyvern Abyss. There is also just more texture to the bass on the Wyvern. But not as snappy as the 4U.

The midrange on the Wyvern is similar to the 4U but its tuning follows the Harman 2019 target much more closely. The upper midrange is quite elevated compared to the 4U. Male/female vocals can become borderline shouty on the Wyvern Abyss.

The treble on the Wyvern is also quite tame, but the 4U has better clarity and extension up top.

Winner: Tanchjim 4U

Kefine Delci


The comparison against the Delci is a very interesting one because if you look at the graph, you can see they have a very similar frequency response curve (minus the large gap in bass shelf)

The bass on the Delci hits strong and with a lot of authority. Even compared to the 4U in Atmosphere mode, it is no match in the bass department.

The midrange on the Delci comes off as warm and smooth. Male vocals have a lot of heft and texture. Female vocals are forward and smooth without any shout. Instruments have great timbre, especially pianos.

The treble on the Delci is also very similar to the 4U, but I would say that it has a bit more extension, leading to a more airy and open presentation. Overall, I much prefer the presentation on the Delci.

Winner: Kefine Delci

Conclusion​

Tanchjim did a great job tuning the 4U, unfortunately that just isn’t enough to compete in today’s sub-100 dollar IEM market. Yes, it has 4 different user adjustable tunings but in reality, there’s only two that are worth using(Atmosphere and Pop).

This is a great IEM for someone that wants a fairly neutral, non-offensive tuning with the ability to adjust the bass shelf to one’s preference. Safe and sound is the term I like to use to describe this IEM. You will hear everything the track was produced to have but nothing more.

Thanks again for reading my review and feel free to comment below if you have any questions or suggestions on my future reviews.

Intro/Disclaimer​

The Roseselsa RS9039 dongle DAC is a newly released portable dac/amp by Rose Technics. It uses the new ES9039Q2M dac chipset.

This dac/amp was loaned to me by a fellow reviewer in the Head-Fi community. Thank you for the opportunity. My review is solely based on what I hear with my own two ears as this is a very subjective hobby. My ratings are also based on how I think this dongle dac fares against others in the same price category.

My primary litmus test when it comes to audio gear is whether or not vocals and instruments sound natural/organic. Regardless if the gear exhibits the biggest bass or the most technical treble. If it doesn’t sound natural to my ears then it’s a red flag.

Packaging and accessories​

The packaging is pretty standard for small budget dongle dacs these days. Wrapped in a cardboard sleeve, inside you will find a hardshell case with the RS9039 DAC and USB-C to USB-C cable. Apple users will need to purchase a Lightning to USB-C connector.

Build & Specifications​

The build of this dongle is quite good actually. Made entirely of a CNC-machined aluminum alloy body, it is very lightweight coming in at only 14.5 grams. The bottom of the dac also has a cool painted-on schematic of the internals. It also distinguishes the 3.5mm and 4.4mm outputs with the words “300MW’ and “240MW”

The RS9039 packs quite a punch in the power department for being such a small dongle. Single-ended outputs 240mW @ 32 ohms and Balanced 4.4 outputs 300mW @ 32 ohms. More than enough to drive even the most demanding IEMs.

One thing you will notice about the RS9039 is the lack of physical buttons. There is no volume control or gain switch. Be Warned!

Output Power: 3.5mm 240mw @32 ohms, 4.4mm 300mw @32 ohms
THD+N: 0.0003% @1 kHz 32 ohms
SNR: 126 dB @ 1khz 32 ohms
Dynamic Range: 130 dB
PCM: Up to 32bit/384khz
DSD: Native DSD 64/128/256

Sound​

Source Chain Used
Pula PA02<-RS9039 <- MacMini M1 <- Apple Music Lossless
Pula PA02<-RS9039 <- iPhone 14 <- Apple Music Lossless
Pula PA02<-Questyle M15 <- MacMini M1 <- Apple Music Lossless
Pula PA02<-Chord Mojo2 <- MacMini M1 <- Apple Music Lossless

Songs played






Initial impressions (before brain burn in)
I usually like to jot down my first impressions within the first few minutes of listening to a new audio product. Because, believe it or not, brain burn-in is a real thing.

Upon listening to the first few songs in my library, I was immediately impressed with the lush midrange and impactful bass. Mid range is smooth and forward. Male vocals have good note weight and sound very lush. The treble is smooth and non-fatiguing but lacking in clarity. You immediately notice that this dac skews more towards a warm/lush sound signature and in turn sacrifices some technical ability. I think this dongle will pair very well with more neutral/bright tuned IEMs.

I did not notice much sonic differences between the 3.5 and 4.4 outputs. Both have plenty of power to drive all your IEMs. I will say that the RS9039 seems to do better with single DD IEMs vs. hybrid IEMs with multiple drivers. It seems to struggle driving the hybrid drivers to their full potential.

Comparisons​

Chord Mojo 2 ($650)

Let’s start off with the Mojo2, it is my benchmark portable DAC/AMP. Yes, it’s in a completely different price bracket but it’s important to have a frame of reference for these comparisons.

When going between the RS9039 and the Mojo2, you immediately notice the claustrophobic soundstage, lack of detail retrieval and poor imaging. Like I said, this was not a fair fight. The Mojo2 is also a warm leaning sound signature but it manages to project a wide soundstage combined with excellent imaging and detail retrieval. The reproduction of music on the Mojo2 is just done with such authority and clarity without ever sounding harsh or sibilant.

Questyle M15 ($250)

Compared to the M15, you also get a more coherent and textured sound presentation. Bass reproduction is tighter, has more texture and slam. The soundstage also opens up, instruments sound very natural and with great separation. Vocals also have a lot more clarity and incisiveness. Overall, a more musical experience when compared to the RS9039.

Apple Dongle USB-C($9)

Last but not least, we have the all-famous Apple Dongle. The Apple dongle is known for presenting an uncolored sound and this time is no exception. Compared to the RS9039, you get much clearer imaging and soundstage. Bass is tight and thumpy but without any bloat. If you want something cheap and good then you can't go wrong with the Apple USB-C to 3.5mm dongle.

Conclusion​

The ROSESELSA RS9039 DAC is an interesting little dongle. It seemingly is a bass boosted/warm dongle dac. Which is not all too common in the world of portable source gear. Most manufacturers go for a neutral based presentation to not color the sound too much. Rose technics threw that recipe out the window and went for their own tuning with the RS9039. And honestly, some people might like this warm coloration to their music. Especially if you have a bright leaning IEM that needs to be toned down a little. All in all, I think Rose Technics have a competitive dongle dac here. This was on sale for $67 at HiFiGo at the time of this writing.

Intro/Disclaimer​

2024 has been an unbelievable year for IEM releases and the Kinera Celest Wyvern Abyss/Black is no exception. For those that don’t know, Kinera has been around the ChiFi scene for quite a while and has released many IEMs through the years. 2024 has been somewhat of a busy year for them, releasing many new IEMs that have been quite well received. The Wyvern Abyss is no exception. Read on to learn more about this 30 dollar Harman tuned blockbuster.

This set was loaned to me by a good friend and fellow IEM reviewer Jaytiss. Thanks again for the opportunity. All thoughts and opinions below are my own and not influenced by any external party.

My impressions are solely based on what I hear with my own two ears as this is a very subjective hobby. My ratings are also based on how I think this IEM fares against others in the same price category.

My primary litmus test when it comes to audio gear is whether or not vocals and instruments sound natural/organic. Regardless if the IEM has the biggest bass or the most technical treble. If it doesn’t sound natural to my ears then it’s a red flag. SPOILER: The Wyvern Abyss delivers on this front.

Packaging and accessories​

Standard cardboard sleeve packaging that you see amongst all other IEMs around this price range but it’s what’s inside that matters. Along with the IEMs, you get three pairs of wide bore tips and a decent OFC Copper cable with gray PVC coating. The only cable termination is 3.5mm.

Build, Comfort and Fit​

The build of this IEM consists of a 3D-printed resin shell with a purplish dragonscale faceplate. The shell is of medium size and mimics a more custom mold than more generic ones. It fits extremely well in my ear and did not experience any discomfort after hour long listening sessions. I am extremely impressed with the build and design of the Wyvern Abyss.

Specs​

10mm LCP Diaphragm Dynamic Driver.
3D Printed Resin Material Shell.
Impedance: 32Ω.
Sensitivity: 105dB.
Frequency Response Range: 20Hz-20kHz.
Connector Type: 0.78mm 2-pin.
Termination Plug: 3.5mm.

Sound​

Sources Used
Wyvern Abyss <- Chord Mojo 2 <- MacMini M1 <- Apple Music Lossless

Songs played






Initial impressions (before brain burn in)
I usually like to jot down my first impressions within the first few minutes of listening to a new IEM. Because, believe it or not, brain burn-in is a real thing.

Upon listening to the first few songs in my library, I was immediately impressed with the large soundstage and excellent instrument separation. The timbre and tonality on the Wyvern is also spot on. Male and female vocals are a bit recessed in the mix but does not detract from the overall musicality. The upper mids are energetic but not shouty or sibilant. Harman done right.

Lows (Bass)

• Good sub bass extension and rumble
• In certain songs the mid bass can sound boomy
• Engaging midbass that is not overbearing
• Well textured and nuanced

Mids

• Vocals are pushed a bit back in the mix
• Male vocals have a nice warmth and richness
• Female vocals are energetic but doesn’t cross the line
• Energetic and engaging upper mid range

Highs (Treble)

• Good clarity and instrument separation
• Smooth and detailed without being sibilant
• Lacks a bit of sparkle up top

Technicalities (Soundstage/Separation/Imaging)

• Excellent instrument separation and imaging
• Good micro-details
• Soundstage is done very well
• Great coherency due to single transducer
• Scales well with better sources

Comparisons​

I’ll be comparing the Wyvern Abyss to the Tangzu Wan’er ($20 set) and the Truthear x Crinacle Zero: Red ($55). (Graph credit: HobbyTalk)

Tangzu Wan’er

Compared to the Wan’er the Wyvern Abyss is definitely a step up in sound quality. You can hear how much more articulate the bass response is on the Wyvern compared to the Wan’er. Although the Wan’er has good bass, it is quite one-dimensional.

The midrange on the Wyvern is also a step up in clarity and resolution. Although Male vocals take a step back in the mix, it by no way takes away from the enjoyment of the song.

The treble extension on the Wyvern is also just more extended and cleaner compared to the Wan’er.

Winner: Wyvern Abyss

Truthear x Crinacle Zero: Red

The comparison against the Zero: Red is quite interesting. One would think the Zero:Red, with its two dynamic drivers would outclass the Wyvern Abyss in all aspects right? Wrong. I learned very early on in my IEM journey that Price and Driver count is no way indicative of sound quality. The tuning of the transducers plays a very big role.

Looking at the graph, you can see that the Wyvern Abyss has a much more filled-in bass shelf. The Zero: Red (without 10ohm adapter) sounds anemic at best. The quality of the bass in my opinion is also much better on the Wyvern. Better texture and nuance compared to just a wall of bass on the Zero:Red.

The midrange in the Zero:RED is smooth and inoffensive, but at the same time, quite boring. You can see the lack of ear gain on the Zero:RED compared to the Wyvern Abyss.

The treble on the Zero:RED is also quite blunted. High-hats and snares lack the definitive edge and crispness. Which is the complete opposite feeling you get when listening to the Wyvern Abyss.

Winner: Wyvern Abyss

Conclusion​

Kinera definitely has a winner on their hands with the Wyvern Abyss. This single dynamic driver is tuned extremely well following the Harman 2019 target. If 30 dollars is your budget, then this is a no brainer must buy.

The driver quality is definitely a step up from the 7Hz Zero’s, Chu’s, and Wan’ers of the world. I’ll even go out on a limb and say that this competes with 50-70 dollar sets like the Truthear Zeros and Kefine Delci.

It’s truly amazing the kind of sound quality and tuning we can get in the budget IEM world these days.

Intro/Disclaimer​

The Tangzu Wan’er has garnered quite the following since its release in late 2022. It is often the de facto standard when someone in the Audiophile community asks for a neutral tuned sub $20 IEM recommendation. So, how does this single dynamic transducer compare to others in the same price category? Read on to find out.

I purchased this set of IEMs with my own money and all opinions are my own. My review is solely based on what I hear with my own two ears as this is a very subjective hobby. My ratings are also based on how I think this IEM fares against others in the same price category.

My primary litmus test when it comes to audio gear is whether or not vocals and instruments sound natural/organic. Regardless if the IEM has the biggest bass or the most technical treble. If it doesn’t sound natural to my ears then it’s a red flag. SPOILER: The Wan’er definitely delivers on this front.

Packaging and accessories​

Standard cardboard sleeve packaging that you see with all other IEMs around this price range but it’s what’s inside that matters. Along with the IEMs, you get six pairs of tips and a decent 5N oxygen free high-purity cable. I’m also happy to announce that instead of a typical waifu on the box, the artwork is a homage to Wan’er SG, the first and only female prime minister recorded in imperial Chinese history.

The included tip selection is also quite good as it includes my favorite ACOUSTUNE AET07/KBEAR 07 style tips

Build, Comfort and Fit​

The build of this IEM consists of a semi-translucent polycarbonate plastic shell which comes in Black, White, or Emerald Green. The shell is of medium size and fits reasonably well in the ear. However, I do start to experience some discomfort after having them in my ears for more than 30 minutes. The IEM also uses the less common QDC type 2-pin connector.

Sound​

Sources Used
Tangzu Wan’er <- Chord Mojo 2 <- MacMini M1 <- Apple Music Lossless

Songs played






Initial impressions (before brain burn in)
I usually like to jot down my first impressions within the first few minutes of listening to a new IEM. Because, believe it or not, brain burn-in is a real thing.

Upon listening to the first few songs in my library, I was immediately impressed with the lush midrange and impactful bass. The timbre and tonality on the Wan’er is spot on. Male and female vocals have adequate note weight and instruments sound very natural. There is decent treble extension in the upper frequency ranges but not harsh or sibilant.

Lows (Bass)

• Clean, controlled and impactful
• Excellent midbass thump which adds engagement to the music
• Lacks texture (one dimensional)

Mids

• Top tier timbre and tonality for under $20
• Excellent presentation of both male and female vocals
• Subtle warmth that adds some nice richness to the mids

Highs (Treble)

• Good clarity and natural sounding
• Smooth and detailed without being sibilant
• Lacks simmer and sparkle on tracks that fall in that genre

Technicalities (Soundstage/Separation/Imaging)

• Decent resolution and imaging
• Good micro-details
• Soundstage is average for this price range
• Great coherency due to single driver

Comparisons​

While there are many good sub-$20 IEMs in the market now, I will compare the Wan’er in this review to the 7Hz Salnotes Zero OG.

On first listen, I immediately noticed the increased bass presence on the Wan’er that is missing from the Zero. It makes the music I listen to immediately more fun and engaging. The mid-range on the Wan’er is also quite balanced with good timbre and tonality. Both male and female vocals sound extremely musical. Treble is also smooth with good extension.

So is the Wan’er the better IEM in this price bracket? Not necessarily, if I had to choose, nine times out of ten I would choose the OG Zero. The Zero just has a much cleaner musical presentation of vocals and instruments. Not to mention the above average soundstage and imaging capabilities. I also did not like the fit of the Wan’er compared to the Zero.

However, if you have a bass heavy playlist then I can see where you might want to pick the Wan’er as it just hits harder in exchange for some clarity up top.

Conclusion​

So does the Tangzu Wan’er SG still compete in 2024? I think so. You can often find the IEM selling for around $15 USD during sales. At that price, it’s a no brainer. This is an excellent neutral-warm budget set that is great for gifts and/or those new to the IEM world. The tuning you can get from IEMs sub-20 dollars is truly remarkable as it was only a few years ago you had to pay at least $60+ to get decent tuning. The value proposition you get out of the Wan’er is truly remarkable even by today’s standards.

Intro/Disclaimer​

The original 7Hz Salnotes Zero arrived in 2022 to much fanfare and praise. Coming from their highly successful 7Hz Timeless Planar IEM, would 7Hz be able to enter the budget IEM market with a bang? Read on to find out.

I purchased this set of IEMs with my own money and all opinions are my own. My review is solely based on what I hear with my own two ears as this is a very subjective hobby. My ratings are also based on how I think this IEM fares against other IEMs in its price range.

My primary litmus test when it comes to audio gear is whether or not vocals and instruments sound natural/organic. Regardless if the IEM has the biggest bass or the most technical treble. If it doesn’t sound natural to my ears then it’s a red flag. SPOILER: The 7Hz Zero OG definitely delivers on this front.

Packaging and accessories​

The packaging and accessories are pretty basic but adequate for an IEM at this price range. Inside the small white cardboard box are the IEMs, a decent cable, and an assortment of colorful silicone tips.

Build, Comfort and Fit​

I really liked the fit and comfort of the ZERO. While constructed mostly of plastic, it does have a nice metal faceplate on the front of the IEM to give it a more premium look. I also enjoy the plethora of different colors that this IEM comes in. There is a color for everyone!

Sound​

Sources Used
7Hz Salnotes ZERO <- Chord Mojo 2 <- MacMini M1 <- Apple Music Lossless

Songs played









Initial impressions (before brain burn in)
I usually like to jot down my first impressions when it comes to listening to new gear. Because whether you believe it or not, brain burn-in is a real thing.

Upon listening to the first few songs in my library, I was immediately impressed with the wide and spacious soundstage on this $15 IEM. The other standout feature is the clean and natural presentation of instruments. Yes, the bass is somewhat lacking but it more than makes up for it in the excellent mids and treble.

Bass

• Clean and controlled
• Midbass is somewhat lean
• Won’t satisfy bassheads

Mids

• Excellent timbre and tonality
• Female vocals really shine
• Male vocals can sound a bit sterile depending on the artist

Treble

• Good clarity and natural sounding
• Smooth and detailed without being sibilant
• High hats and cymbals sound extremely natural

Technicalities (Soundstage/Separation/Imaging)

• Excellent soundstage and instrument presentation
• Good macro details
• Good attack and decay on vocals and instruments

Comparisons​

While there are many good sub-$20 IEMs in the market now, the 7Hz Salnotes Zero really paved the way for this budget IEM bracket. Obviously most people will compare the OG Zero to the newer Zero: 2 but I will instead compare it to the TangZu Wan’er SG since that’s what I have on my desk right now.

On first listen, I immediately noticed the increased mid bass presence on the Wan’er that is missing from the OG Zero. It makes the music I listen to immediately more fun and engaging. The mid-range on the Wan’er is also quite balanced with good timbre and tonality. Both male and female vocals sound extremely musical. Treble is also smooth but not as well extended or incisive compared to the OG Zero.

So is the Wan’er the better IEM in this price bracket? Not necessarily, if I had to choose, nine times out of ten I would choose the OG Zero. The Zero just has a much cleaner musical presentation of vocals and instruments. Not to mention the above average soundstage and imaging capabilities. I also did not like the fit of the Wan’er compared to the 7Hz Zero.

Conclusion​

So does the 7Hz Salnotes Zero (OG) still compete in 2024? I think so, you can often find the 7Hz Zero OG for around $15USD during sales. The excellent soundstage/imaging also makes this IEM a great pairing for gamers and new audiophiles alike. I would wholeheartedly recommend the Zero to those new to the IEM hobby. The price to performance value you get out of the Zero OG is truly remarkable even by today’s standards.

Intro/Disclaimer​

The AFUL MagicOne has garnered a lot of attention towards the end of 2023 but does this single BA set still compete in 2024? Read on to find out.

I purchased this set of IEMs with my own money and all opinions are my own. My review is solely based on what I hear with my own two ears as this is a very subjective hobby. My ratings are also based on how I think this IEM fares against other IEMs in its price range.

My primary litmus test when it comes to audio gear is whether or not vocals and instruments sound natural/organic. Regardless if the IEM has the biggest bass or the most technical treble. If it doesn’t sound natural to my ears then it’s a red flag. SPOILER: The Aful MagicOne definitely delivers on this front.

Packaging and accessories​

Standard cardboard sleeve packaging that you see with all other IEMs around this price range but it’s what’s inside that matters. Along with the IEMs, you get six pairs of tips and one of the best stock cables I’ve handled around this price range. The cable is made with high-purity oxygen-free copper and oxygen-free copper silver plated in a 32+37 core configuration. It is well braided and has a decent amount of heft.

Build, Comfort and Fit​

I really liked the build of this IEM, from the snowy faceplate to the full translucent resin shell that puts everything on full display. Originally, I had some troubles with the fit in my right ear but once I did some tip swapping I was able to get an excellent seal in both ears (very important with this IEM). Some people have expressed discomfort from a suction effect but I did not experience this phenomenon. This IEM is vented.

Sound​

Sources Used
AFUL MagicOne <- Questyle M15 <- MacMini M1 <- Apple Music Lossless

Songs played

Initial impressions (before brain burn in)
I usually like to jot down my first impressions when it comes to listening to new gear. Because whether you believe it or not, brain burn-in is a real thing.

Upon listening to the first few songs in my library, I was immediately impressed with the lush midrange and impactful bass. You won’t get a rumbling subbass from this set but the mid-bass does hit hard when you have a proper seal. Also, this single BA IEM needs Power to really shine. Once you meet the requirements, you are presented with a wonderful mid range focused set with excellent vocals and instrument clarity. The timbre and tonality AFUL produced from this single custom BA is truly amazing.

Bass

• Clean, controlled and impactful
• Lack of sub bass rumble
• No mid bass bleed

Mids

• Top tier timbre and tonality
• Excellent presentation for both male and female vocals
• Subtle warmth that adds some nice richness to the mids

Treble

• Good clarity and natural sounding
• Smooth and detailed without being sibilant
• High hats sound extremely natural

Technicalities (Soundstage/Separation/Imaging)

• Excellent resolution and imaging
• Good micro-details
• Soundstage is above average in both directions
• Great coherency due to single driver
• Great layering and instrument separation

Comparisons​

Comparisons are a bit tricky as I have not listened to any other one BA sets in this price range. However, compared to other multi-BA sets I’ve listened to like the Dunu SA6, the AFUL MagicOne definitely holds its own. Yes, it doesn’t have quite the same amount of low end grunt but it definitely makes up for it in overall tonality, timbre and resolution.

Conclusion​

The MagicOne is a great example of a proof-of-concept gone right. AFUL did a wonderful job developing this Single-BA IEM and it truly shows when you put it in your ears. The MagicOne is the IEM to reach for when you just want to listen to music without much fanfare or fatigue. You will be extremely happy with this IEM if timbre and tonality are at the top of your requirements list. Just remember that proper amplification is required to get this IEM to perform its best.

Intro/Disclosure​

Recently, I got the opportunity to A/B the Truthear Zero (Blue) and the Truthear Zero: Red. I purchased both these IEMs with my own money and all opinions are my own. My review is solely based on what I hear with my own two ears as this is a very subjective hobby. My ratings are based on how I think this IEM fares against other IEMs in its price range.

My primary litmus test when it comes to audio gear is whether or not vocals and instruments sound natural/organic. Regardless if the IEM has the biggest bass or the most technical treble. If it doesn’t sound natural to My Ears then it’s a red flag.

Packaging and accessories​

Pretty standard packaging at this price point. The Zero comes with a nice leatherette pouch with the cable and a decent selection of tips. 3 sets of wide bore, 3 sets of narrow bore and a set of sticky foams. Oh and don’t forget the Waifu as well.

Build, Comfort and Fit​

I really liked the look of the faceplate (which can be blue or purple depending on how the light hits it). The shell is somewhat bulky and protrudes quite a bit from my ears. The included tips seemed to work best for my ears but comfort is the elephant in the room with this IEM. Unfortunately, I started to notice discomfort after about 30-45 minutes of wear.

Sound​

Sources Used:
Truthear Zeros <-> Questyle M15 <-> MacMini M1 <-> Apple Music Lossless

Songs listened to:









Initial impressions: (before brain burn in)
I usually like to jot down my first impressions when it comes to listening to new gear within the first few minutes. Because whether you believe it or not, brain burn-in is a real thing.

Upon listening to the first few songs in my library, I was immediately impressed with the nice bass presentation, both sub-bass and midbass sounded full and impactful. The other notable feature was the sheer size of the soundstage both horizontally and vertically is quite impressive for an IEM at this price point. If you play lots of FPS games this is the set to get at the $50 mark.

Bass

• Hefty amount of bass. More mid bass slam than sub bass rumble.
• Not the most textured bass but well controlled
• Quantity could be too much for some

Mids

• Warmer tuning with organic timbre
• Lower mids are a bit recessed for my tastes
• Male vocals sound far away and quite lifeless.
• Female vocals fare a bit better but can appear shouty depending on the singer

Treble

• Laid back but still engaging
• Smooth and not sibilant
• Details could be better

Technicalities (Soundstage/Separation/Imaging)

• Depending on the recording, the Zeros can throw quite a large soundstage
• Imaging and placement of instruments in a wide stage is surprisingly good.
• Detail retrieval isn’t the best, busy tracks can sound congested.
• Excels in FPS shooters where you can pinpoint enemies at will.

Comparisons​

Compared to the Truthear Zero: Reds, I would pick the Zero Blue every time. The Blue just has more energy in the upper mids that improves detail retrieval and imaging. The Zero Reds have a quite relaxed treble thus leading to everything sounding blunted and congested. The Blue also has a more cohesive bass without the need for any impedance adapters. The Red’s bass is significantly less compared to the Blue without the 10 ohm adapter.

Conclusion​

The $50 price point in 2024 is an extremely competitive one. Does this 2022 release still compete? I think so, especially if you are after a harman 2019 sound that is tuned by Crinacle. If you are a gamer, I think this is a no-brainer at the $50 price point. I would also choose the Zero Blue over the Red any day of the week. The tuning is just better to my ears.

Ps. This was my first written review on Head-Fi, go easy on me. I look forward to sharing my thoughts on additional IEMs and headphones in the near future.