Knowledge Zenith (KZ) EDA

Oi! Welcome to my another IEM review and what we have here is from the most popular Chi-fi brand of all time, Knowledge Zenith a.k.a. KZ. We already know KZ on how very influential they are in the current audio market space either you hate them or like them.


As we all know, most of us who started in this audio hobby in the mid 2010s were probably at least owning a set from KZ as our starter pack on our audio enthusiast journey. To think that KZ is now a decade-old company and how they are already well-entrenched in the audio market and established itself as the preeminent leader of the budget IEM market for a long time until to this day.


KZ introduces their latest product, The KZ EDA. KZ EDA is very different compares to all of KZ's previous products as it has included three (3) pairs of shells with different tuning as they probably want their customers to let them experience a different tuning modes on one single package. This actually commendable to them that they approach differently on this one, good job!




The packaging box is quite very minimalist and bare-bones as usual just like their budget segment. It has a small white box with a sleeve with illustration of KZ EDA at the front and basic specification and company address infos at the back.


The contents of the packaging box are the following:

• a pair of EDA "Heavy Bass" IEM (in gold colour with opaque faceplate)
• a pair of EDA "Balanced" IEM (in silver colour with clear faceplate)
• a pair of EDA "Hi-Res" IEM (in silver colour with cyan faceplate.)
• a white, rounded flat stock cable in 3.5mm termination plug
• Extra pair of eartips in different standard sizes.
• Instruction manual.

The shells of KZ EDA are decently good for its price. They are made of polycarbonate plastic with a recently newly developed dynamic driver that were implemented to some of their previous models ( and CCA's too). This new generation of dynamic driver promises a lower distortion rate, a improve on transient performance and better output for its diaphragm attenuation.




The size of the EDA's are of a small scale that it easily fit through my lug holes and it does a decent sealing from external noise sources. The build quality is decent that it you can assure its durability for daily use. Like most of KZ's product, they still uses a QDC-type 2 pin connector for firm and stable connection.




When it comes to pairing on sources, KZ EDAs are definitely easy to drive devices.

Smartphone, tablets and other multimedia devices are sufficient enough to deliver an output to EDA to sound it fuller and good dynamics.




The tonality of KZ EDAs are all V-shape sounding with a slight deviation on some part of the its audio frequency range spectrum of each pair on it.


I'll pointing all the sound characteristics of KZ EDAs based on my perceived observation for a past few days.


This review will be slightly different when its comes to my typical pattern format as I will separate it on each variant of EDAs.




LOWS/BASS:


EDA "Heavy Bass"

To all the EDAs, this is the most bassy one among the trio. It has a solid, good impact and depth that bass heads really want on the low frequency quality, a boomy bass. For its sub bass performance, it has a good depth that I discerningly hear the grumbling especially on bassy and electronic bass elements from some tracks in synthpop, hip-hop and some current modern pop genre. Mid bass is definitely is well-texture as it gives a more growl on a bass guitar, a thunderous sound of a bass kick and a deeper pitch vocals of a bass baritones. Despite of these good quality on its bass, there is a caveat on this one, that apparent bass bleeds that sometimes smudge over the mids that will affect the vocals and some instruments.


EDA "Balanced"

Bass quality on EDA "balanced" has an ample texture, has a fair punchiness and very precise. It is more of a sub bass focus one, as it has more define resounding quality in overall bass region while mid bass has acceptable texture to give a thudding sound of bass kick, a more somber sound on bass guitars and decent deepness of a bass baritone voice. This is actually my preferred bass quality of all three EDAs as it is well-balanced, lessens its mid bass smearing to other frequency range spectrum and cleaner response.


EDA " Hi-Res"

This kind of bass will please reference-neutral lovers, it is tight, clean and precise. Both sub-bass and mid-bass are equally on a leaner texture in general sound signature of this IEM. It is similar to EDA " balanced" in a sub bass quality but the mid bass is a bit too transparent in my liking as it gives a hollow sound on bass kicks, a dull sounding bass guitar ( Au revoir growl and rasping licks, slaps and frets) and a more shallow vocal quality bass baritone. To all the EDAs, EDA "Hi-res" is absolutely the cleanest bass reproduction to all of them.


MIDRANGE:



EDA "Heavy Bass"

Among the EDAs of being V-shape sounding, it has the steepest one as mids are definitely recessed, it has a warmth on it and also a way too linear in my liking that it really affects the quality on vocals especially on female, its too lean, less engaging and subdued. As for instruments, they are less details as violins and guitars has a lack of crisp and detail, Pianos are too rounded and warm sounding and trumpets sounds a bit too dark that its loses it brilliance. I'm a midcentric guy and i find it inadequate both in quantity and quality.


EDA "Balanced"

Despite that I still classify it as V-shape sounding, it has acceptable quality of vocals and instruments. For sure that it has recessed mids but delivers a smooth, cleaner quality and has an ample texture on both male and female vocals. Male vocal has a firmness and authoritative character while female vocals has a mellow and a sense of openness but it has edginess on it. For quality of instruments, percussives like snares has a precise and penetrating sound, strings like violin and guitars, as it gives a sensuous and acceptable lustrous on violin, a crisp and vibrant sound of a guitar and lastly, more lively and bright sound of a piano. This is actually one of the most balanced sounding midrange in a V-shape sounding IEM at under US$30/£25 price range.


EDA "Hi-Res"

Mids on this one definitely leaner, brighter and "glassy". Certainly, it gives a vocal quality on females voices to sound more detail, transparent and more spacious sounding compared to EDA "balanced" but at the expense of a tad grating, scratchy and shrilly that might be overbearing to some treble sensitives. On instruments, it gives a rattling and metallic sounding on snare drums, a more crisp and crystalline sound on guitars,a shrilly and brighter sound on a violin and lastly, a lively and more edgy sound on a piano. Overall, EDA "Hi-res" gives a more gleam on the midrange compared to other EDAs.



HIGHS/TREBLE:


EDA "Heavy Bass"

Due to the steepest V-shape sounding among the three, treble is also prominent sound spectrum in the EDA "Heavy Bass" variant. Upper mid peaks are perceptible on this one as I notice some occurrences of sibilance and jarring especially when I played some sibilant-laden tracks. As for sound on cymbals, it has sufficient shimmer and hi hats "chicky" sounds is natural and accurate but treble airiness is tad average when it comes to extension across the brilliance spectrum.



EDA "Balanced"

It is certainly the smoothest of the EDA variants, peaks upper mids is still noticeable but it has least sibilance and a tone down a bit on being strident. Cymbals' sound still has a sufficient shimmer and an organic presentation on hi hats but like its "heavy bass" counterpart treble extension is a bit underwhelming in my hearing perception.




EDA "Hi-Res"

A Hi-res rating is also identified with an overwhelming reach on treble range (reaching over 40KHz is a standard to rate on such a device as a "Hi-Res" according to JAS). A boosting on upper mids and presence treble give some sense of clarity and bright and that's what KZ was doing on tuning of the EDA "Hi-Res" but there are some cautionary concerns. Sibilance is even observable and even more discordant compare to the " balanced" and "heavy bass" variants of EDA. It gives a more gleam and shimmer on cymbals to sound less natural along with the sound quality on hi-hats. Despite on the added boost upper mids to presence treble, it only gives a miniscule improvement of the treble extension. Overall, the treble presentation on EDA "Hi-res" is bright, sharp and cacophonous that treble-sensitives will have an assured aversion on this kind of tuning but it will give a smile on a face of some treble lovers as it gives more a definition and more clarity on their liking.




SOUNDSTAGE, IMAGING AND OTHER TECHNICALITIES:

When it regards on the spatiality aspect, it has a decent proportion. It has an average to above average soundstage width, a good height ceiling and an enough depth to give a more immersive experience. Imaging is just average as the presentation of perceived placement of instrumentalist and singer doesn't define well and bit blurry to pinpoint them out. Separation and layering is just a mere average to some instances of a congested and constricted feeling if I listen to more complex tracks with more instrumental elements.


As for resolution capability its has good detail retrieval and clarity especially on a "Hi-res" variant of EDA albeit at the expense of causing an ear fatigue due to a sharper definition and too much transparency.


Coherency-wise, due to its newer generation of dynamic drivers. It is performing very cohesive and resolving due to a faster transients (maybe thin diaphragm on this DD really works on that manner).



PEER COMPARISONS:


BLON 03


(Note: I'll compare it with the "Heavy Bass" variant of EDA*)

• Bass quality is bit bloated and tends to smears more on BLON 03 over EDA*, EDA* has better bass response as it faster transients and a decent bass bleed control.
• Both have a typical v-shaped sound signature. But midrange on EDA* has a tad better resolution and less recess over BLON 03's subpar clarity on vocals and instrument.
• Technical performance wise, EDA* has better staging and somewhat separation while BLON 03 has poor technicalities due to narrow soundstage, a poor separation of instruments and slow bass response
• Shells on BLON 03 is more of a better quality as it is made of metal alloy while EDA* is made of plastic that offers enough durability but fitting issues on BLON 03 is a very problematic and annoying that it takes time just to have a proper fitting.

ND NSK


(Note: I do a comparison with EDA "balanced"**)

• Both have similar tuning but ND NSK is more of a mature one and also more natural sounding one.
• Bass quality are similar as both of them has a faster and punchiness level.
• Mids is better on ND NSK as its more lush, smoother and more textured as male and female vocal delivers a more solid presentation whereas the EDA** is a bit leaner in a presentation and leanings to being a bright midrange presentation.
• Treble wise, both ND NSK and EDA** are trading blows, while upper mids is more satiny on ND NSK as EDA** need some polish on the upper mids but treble extension is a bit better on EDA but NSK is not a slouch here.
• ND NSK stock cable is way better compare to current almost all KZ IEMs (with the exception of KZ ZES).
• Technicalities aspect-wise, ND NSK is a better one due to a wider soundstage and timber quality is more natural.

CCA CRA


(Note: I compare this one with KZ EDA "Hi-Res"***)

• They have some similarities on tonality as both of them are v-shape sounding with that treble emphasis.
• EDA*** has improved treble quality as it is more smoother and refined compared to CCA CRA.
• CRA has slightly have better treble extension than EDA***as it has bit more air.

To sum up my review here, As I concluded on this review, KZ EDA is definitely Knowledge Zenith's one of their finest creation on how they conceptualise to include 3 sets of IEMs unit with different variations of tuning in a single packaging and at very affordable price as they continue to keep pushing on their improvements in the aspect of tuning and quality of their products.


To whom I can recommend these IEMs? I'll undoubtedly recommend these sets to the starters of audio hobby as a good introduction material and at least they will be given an idea on how a "reference-neutral" monitor tuning will sound like as they perceive it as well-detailed, vivid clarity and a very transparent sounding. And KZ EDA (Hi-res) is a good candidate in that category.


Despite being a little nitpicky and a bit critical in my review of this one. This is an easily recommended set given to its imperfections as its price point, a more plain versatile tuning and value for product will outweigh it.


KZ EDA is now available to purchase online and currently at US$31/£25.




SPECIFICATION:

MODEL: KZ EDA

IMPEDANCE: 30Ω

SENSITIVITY: 112.5dB

FREQUENCY RESPONSE: 10Hz – 40KHz

CABLE LENGTH: 1.25M

PIN TYPE: 2-PIN QDC-TYPE CONNECTOR

PLUG TYPE: 3.5mm

DRIVER UNIT(S): (1) DYNAMIC DRIVER





Some Tracks Tested: ( * = 16-bit FLAC, ** = 24-bit FLAC, *'* = MQA, '*' = DSD, *'= .WAV)


Alison Krauss -When You Say Nothing At All *
Jade Wiedlin - Blue Kiss**
Led Zeppelin - When The Levee Breaks **
Mountain - Mississippi Queen *
Queen - Killer Queen **
Guns N' Roses - Patience *'*
Eric Clapton - Tears in Heaven '*'
Sergio Mendes- Never Gonna Let You Go '*'
Pearl Jam - Daughter **
Roselia - Hidamari Rhodonite *
Assassin - Fight (To Stop The Tyranny)*
Celtic Frost- Visual Aggression *
New Order - Blue Monday *
The Corrs- What Can I do (unplugged version) *
Jimi Hendrix Experience - Voodoo Child *
The Madness- Buggy Trousers *
Metallica - Motorbreath **
Mariah Carey- Always Be My Baby *
Destiny's Child - Say My Name *
Malice Mizer- Au Revoir *
Mozart - Lacrimosa *
New York Philharmonic Orchestra - Dvorak- Symphony 9 " From the New World." *
Eva Cassidy - Fields of Gold (Sting cover)*
Michael Jackson - Give In To Me *
Exciter - Violence and Force *
Diana Krall - Stop This World **
Debbie Gibson - Foolish Beat *'*
Lucretia my Reflection – The Sisters of Mercy **
Suzanne Vega – Luka **


P.S.

I am not affiliated to KNOWLEDGE ZENITH(KZ) nor receive monetary incentives and financial gains as they provide me a review unit for an exchange of factual and sincere feedback from yours truly.


Once again, I would like to thank to Tyvan Lam for providing this review unit, I truly appreciate on his generosity towards me and other reviewers.

DISCLAIMER:
I know, the title is clickbaity lol. But hear me out
This is my personal review diary. I am not paid nor swayed by the generosity of KZ. I was supposed to buy this IEM with my own money, but I did not expect to receive a review unit. Nonetheless, I am still grateful. Thank you Tyvan Lam from KZ Official Store .


Please see my impressions with as much salt as you want. We have different preferences and targets. If you find my use of words to be rather enticing and flowery, they may have been a product of my emotions at the time of writing. I will transcribe my hearing experiences as accurate as possible, but I know that subjectivity can creep in at any given moment. Please bear that in mind.


WHAT’S INSIDE?
1 pair of EDA balanced
1 pair of EDA hires
1 pair of EDA bass
1 pair of eartips for SML lol
1 cable hahaha


FIT and COMFORT
-They are actually comfortable. They don’t have fins but have good curves to match my fit.


SETUP
-shanling m3x using stock player, hiby and UAPP
-various tips like spring tips, bqeyz tips, foam tips to name a few.
-Volume measured and listened at 75-78 dbs.


MY LIBRARY:
I grew up listening to 90’s music. Alternative, punk-rock, screamo, rap, Philippine OPM, Anime songs, JPOP, KPOP, metal, reggae and a lot more.
The artists I regularly listen to are:
Rock-Alternative-Metal
Incubus, 311, BMTH, Matchbox 20, The Goo Goo Dolls, Paramore, Polyphia, The Calling,, Babymetal, Metallica, Slipknot, Bon Jovi, Coheed and Cambria, Deftones, Red Hot, Green day,
OPM(Original Pinoy Music):
E-heads, Slapshock, Parokya, Urbanddub, Up Dharma Down, Bamboo, IV of spade, Kamikazee, Rivermaya
POP:
IU, Yoasobi, Yorushika, Milet, Reona, Maroon 5, Coldplay, Bruno Mars, Ed Sheeran, Taylor, Dua Lipa, Oliva Rodrigo, Billie Eilish
OTHERS:
Carpenters, Micheal Learns to Rock, Celine Dion, Bob Marley, Sitti, Daft Punk, Pink Floyed, Earth wind and fire, Amber rubarth, Sia, Yosi Horikawa
I listen to more, but I can’t just list them all here.haha. Just giving you an idea on what I listen.



SOUND PROFILES:



EDA BALANCED

This is the smoothest of the bunch. A well-balanced tuning with lush mids and a good all-rounder.
Bass has very good texture, attack and decay. They exhibit good command and control that does not interfere or bleed into the mids.
Mids are just lush. Instrument timbre is organic and pleasant. Vocals sound natural both male and female. Never did it come to my perception that “it sounds off”. You can listen for hours long and indulge yourself with correctness.
Non fatiguing treble. Very good body on cymbals but could use a little bit of air. No instances of peakiness. It rolls off quite well, but can sound dull depending on tracks.


PROS
very textured bass on the track “Adrienne”. Quick yet thick on the initial attack.
Very, I mean very lush mids. Vocals, guitars, pianos, violins, they are just so organic sounding.
very well-done theatre like staging. That note weight on the bass, lush mids, treble body, all of these combinations make you associate them to a theatre really.
vocals are forward, intimate and very organic. Never have I lost my focus in feeling the intended emotions in a track.
commanding yet well controlled bass. It has good presence in any track. Just ugghhh. So good. Not in quantity, but in the way it delivers it.


CONS
lacking some bite on electronic guitars when I was listening to “love song” by 311.
in the track “anthem” by Urbaddub, distortions are on the lush side. I mean this can be a preference as well. Distortions are done to relay strong emotions. But for EDA bal, they’re a bit too smooth and lush for my taste.
EDA bal could use a bit more treble air. Just a bit. And yes I am nitpicking
bass may some “one note” on some tracks. This is just my perception and nitpick. This happens especially when switching from Acoustune RS1 which has very good bass layers. On EDA bal, you feel them before you hear them, so perceived bass attack may appear one note at times, if that makes sense. You can try it on the track “drown” by Polyphia.
verdict: the best of the three. The safest. The smoothest. The most correct



EDA HIRES



Very similar sounding to EDA bal, but with a little more gain in the 2k region. So this may be perceived as energetic, aggressive, or even shouty on vocals. They sound really good on instruments though.
Bass almost has the same quality and texture but it can be perceived a little bit tighter because of the added air from the treble
Mids are clean compared to the lush presentation of EDA bal. String instruments have more presence on Hires. Vocals may sound shouty and thin, but I am fine with it. It is far from being inorganic.
Perceived treble may be “clear”. Well, they actually are airier than EDA bal. This provides more layers and separation on instrument heavy tracks. They may sound aggressive for some, but they are far way cleaner than OG CRA.


PROS
clear and engaging at the same time when I was listening to 25k Magic by Bruno Mars. Bass was tight and controlled.
Intimate and energetic vocals in “You belong to me” by Taylor
Very good note retrieval, harmonics and treble decay on the new Polyphia single “playing god”. That ride at 0:59-1:00 is just…uuughhhh..
In the track “frailty” by Urbandub, surprised it has a good and powerful subbass rumble.
snares on the tracks “nebula” and “amber” were tight and complete.
airy treble


CONS
more pronounced peaks which might be too intense for some.
mids aren’t as lush as the EDA bal. But this can be a preference because in some tracks, I favor how Hires handles them.
they almost share the same cons I have with EDA bal, only that, this set might be too aggressive in cymbal heavy and instrument heavy tracks.
verdict: the most intense. The one with the most bite. Best on aggresive tracks.



EDA bass



Bass. Yes. Haha. If you look at the graph, they actually look like the blon03. Very interesting. However, they do not sound alike.
Bass here is just strong with good decay. The driver on EDAs already renders thick note weights, and they just pound your library like an angry librarian. Other reviewers mentioned this has subwoofer like qualities, well maybe. I may be more inclined on my rs1 as reference. RS1 has some realistic subwoofer like qualities I have ever heard. EDA bass is far behind from it, not in quantity but in quality.
Mids almost shares the same traits as EDA hires. But they do not have that glare because, obviously it is compensated by the lower frequencies. They somehow managed to make the mids clean. But, bass is just really in front of everything.
Treble has good sparkle and body as well.


PROS
bass

CONS
bass

verdict: Bass


COMPARISONS
I have already compared EDA to CCA CRA+, EDX ULTRA and Chu in my previous reviews. If you have time, you can check my page for detailed comparisons. But since you are already here, this will be my take.
my facebook page : https://www.facebook.com/practiphile

1st- I rate EDA balanced and Chu in the same level. Both of them actually complement each other very well. Chu being clean sounding, and EDA bal being lush and matured.

2nd - And then I would rank EDA Hires and EDX ULTRA at second. I actually like these sets because they give me a different listening experience. But then I have to factor in duration of listening sessions. Both EDA bal and Chu are just smoother compared to EDA hires and Ultra.

3rd- EDA BASS and CRA+ would be at third. They are not bad sets. They might work on someone else’s library, but not on mine. They also do not have a place in my rotation. I have my acoustune rs1 for my bass fix which is far way superior than the two.

SUMMARY:
EDAs are a game changer in my very honest opinion. Probably not for the seasoned enthusiasts, but for the newcomers, EDA offers a learning curve for their preferences. I know it’s a waste of plastic, but still better than a wasted purchase.
So is KZ EDA really a giant killer this time? I do not think that is the right premise.
Instead, what KZ is trying to say is:
Some giants are just overpriced, and you don’t actually have to spend much in order to get a good sounding set.

WHERE TO BUY: non-affiliate

Aliexpress:
CCA Official Store
https://a.aliexpress.com/_mqHFLxA
Lazada:
Shop online with CCA headphone shop now! Visit CCA headphone shop on Lazada. | https://s.lazada.com.ph/s.ViOPq
Shopee:
https://shopee.ph/gkearphones.ph?smtt=0.0.9
website：https://www.kztws.com

Before you read this review
The eartips included in the KZ EDA package are somehow mediocre and introduces more peaks to the overall sound. To fully unleash its potential, I highly recommend using wide bore tips like Kbear 07, the said tips will retain the treble quality while reducing the peaks and harshness that the stock tips have.




Summary
Generic Traits: Wide soundstage, very competent and speedy drivers, how the notes appear and disappear on the soundscape are very well defined. Detail retrieval are excellent, both macrodetails and microdetails are well nuanced within the soundscape. Imaging with lower pitched instruments is skewed and needs further improvement; however, the soundstage is just impressive, except for the High-Resolution version. All three IEMs also inherit aggressiveness to the sound with the High Resolution being the most relaxed of the three. With the said aggressiveness there’s no noticeable sibilance that is apparent in their old releases. Technicalities are almost the same between the three IEMs, with major differences in tonality.

EDA Bass: General sound signature is U-Shaped with great bass presence. Great depth and wideness to the soundstage. With beautifully textured, punchy and well resolved bass response that does not overstep or muds the midrange. Treble sparkles are well defined while midrange is a bit lean and some people may perceive the upper mids to be shouty at higher volumes. EDA Bass is also the most aggressive sounding out of the three. Beats the DQ6S when it comes to bass resolvability and tightness. Best enjoyed with low volume, treble peaks start to show at higher volumes.

EDA Balanced: General sound signature is approaching Harman Target 2019 with more midbass quantity. It has a concert-hall like sound presentation. Overall sound is very clean and transparent, vocals rendition is tinge brighter than Hzsound Heart Mirror, but both have the same vocals nuances and lushness. Bass response is also tighter that the EDA Bass, instruments nuances and details are just on full throttle and is flowing naturally in the whole soundscape, amazing detail retrieval, analytical with a hint of smoothness to the overall sound. Best sounding out of the three, beats all of my IEMs when it comes to technical performance.

EDA High Resolution: General sound signature is neutral leaning to bright. Treble presentation is same as Heart Mirror with okay-ish rendition of female vocals; however, harshness may occur in most rock tracks when used with stock tips. Soundscape has a small room feel compared to the other two’s wide dynamic concert hall like stage. This version is also the most tamed out of the three. It isn’t dynamic or full sounding like the Balanced version but is most natural and organic sounding set out of the three. Moreover, it has the lowest bass quantity and quality out of the three, bass quality can be improved using Kbear 07.


Disclaimer

• Take my review with a large scoop of salt and always cross reference.
• I like to thank papa KZ for providing me a review unit of the KZ EDA.
• I will analyze the KZ EDA with references to the most expensive set I’ve tried so far (Yume Midnight)
• This review will somehow be biased towards my taste in music and my target sound signature.
• As always, since our ears have different shapes and resonances, your mileage may always vary.

Preliminary

• I’ve used the KZ EDA Bass, Balanced and High Resolution for over 2 weeks with different sources and tips, played different tracks ranging from pop to bossa nova (except Metal).
• I also tested the EDA with stock cable and Kbear 07 eartips, and with CX-31993 as the source.

Equipment

• CX-31993 “Main Source”
• Avani (ALC-5686)
• Abigail (CX-31993)
• LG V20
• Xiaomi Mi 4

Thy Frequency Spectrum
I will review the KZ EDA ignoring its price and only focusing on the sound it offers. This will be a long ride since one of the EDA versions just activates my adrenaline rush as soon as I insert it into my ears. Truth to be told, my experience with the EDA has been a blast for the last 2 weeks, I will sound like a shill after this, but KZ really has outdone their selves this time, I don’t really know what’s happening, it seems like they have awakened something with their driver tech. This isn’t like my enthusiasm with the ZEX Pro (since it’s my first Harman Set), it legit sounds excellent, I even have to confirm it with my non-audiophile friends…

KZ EDA Bass “The Enticing Rumblist”

Bass: 9/10
EDA version with the most enthusiastic and authoritative bass response, beats the DQ6S when it comes to sub bass depth and grandness. Bass lacks the uniqueness (bass air between notes) that their recent model KZ ZES is offering but the texture, tightness and its presence on the soundstage is like two subwoofers on the back of my head. Quantity and quality will easily satisfy bass heads, and people who plays drums or bass guitars will find the bass response of the KZ EDA Bass to be satisfactory as all fundamentals of the said instruments are just shown with poise, detail and articulation. The only issue I have with the EDA Bass is that there’s some track where the bass became the focus of the overall soundscape, while midrange and treble start to lose its redeeming qualities, KZ EDA Balanced version does not have this issue. Using wide bore tips like Kbear 07 highly helps with the bass tightness and cleanliness of the EDA Bass.

Midrange: 7/10
A bit recessed and lean. Midrange lacks refinement; instrument fundamentals does not have enough articulation and weight that the EDA Balanced is offering. Moreover, female vocals are sparkly but sometimes approaches the shout territory specially at higher volumes. Male vocals on the other hand are a bit lusher than the EDA Balanced and leaner than the DQ6S or ZES. Deep male vocals highly benefit with the midrange of the EDA Bass as it’s replayed with weight and lushness, while higher pitched male vocals are somehow thin and wispy.

However, even with the huge bass response as shown in the graphs, the midrange still leans on the brighter side, due to the bass response having this speedy nature rather than a smooth bloomy response that some drivers (LCP, CNT) are offering, reducing the influence of the midbass in the lower midrange by a lot. The caveat of making the bass like what stated above is it results to less warmth and smoothness in the midrange.

Treble: 6/10
Well extended but may come off as harsh and peaky at higher volumes (highly recommend to use a narrow bore tip with the said set), 2kHz and 5khz peaks introduces harshness at the upper midrange and lower treble. At lower volumes however, the treble is very satisfactory. Soundscape begins to show fluttering nuances in the harmonics of pianos, flutes and guitars. There’s also enough air and brilliance within the soundscape which contributes to its open and spacious sound characteristic. Moreover, the EDA Bass version upper treble response has more overall quantity than the High Resolution and Balanced version, making the overall sound more aggressive and strident than the other two.

KZ EDA High Resolution “The Affluent Detailer”

Bass: 6/10
Low in quantity but tight and fast like its brothers. With stock ear tips bass is limp and lacks weight, but with wide bore tips (e.g Kbear 07), bass starts to show its prowess, quality and articulation starts to be noticeable like its brothers but just less in quantity. Subbass rumble is definitely low and midbass is just there to add depth and a bit of weight to the overall sound. Drums and bass guitars sound lean and lacks the fun factor, but has decent details and articulation on the soundscape. Moreover, even if the bass is somehow elevated according to the graphs, the drivers just control it very nicely throughout the spectrum making bass bleed nonexistent.

Overall, bass isn’t that dynamic like its brothers but quality is still there. The low quantity will definitely satisfy neutral heads as it unmasks the lower midrange details and sounds really good with tracks that has inherent punchy bass.

Midrange 6.5/10
One of the best parts of the High-Resolution version, midrange is more transparent than the EDA Balanced but there’s a noticeable shout at the upper midrange making female vocals sparkly and energetic but borderline peaky with some tracks. Instrument fundamentals sounds properly detailed and nuances came off quite nicely. But, due to the lower midbass quantity and higher pinna gain, the overall midrange has a thin character to it which is not that suitable for rock and metal tracks, but excellent for jazz, bossa nova and ambient music. Male and female vocals also have this thinness to them resulting to a very transparent yet tonally off vocals.

Treble 8/10
Due to the focus of the overall sound at the treble area, treble region came off as superbly extended, sparkly and full of air. The treble presentation makes the EDA High Resolution retrieve more microdetails (e.g room reverb) and nuances, soundscape has more air and openness compared to its brothers. Piano and string instruments harmonics are just shown with clarity and articulation making symphonic tracks have this dimensionality and grandness to it.

In summary, just think of High-Resolution version as Heart Mirror Lite. I also didn’t rate the treble as high as the Balanced Version since peaks around 2kHz and 6kHz are more audible with this version.

KZ EDA Balanced “The Dynamic Realist”

Bass: 9/10
Middle-ground quantity between the High Resolution and Bass Version, bass is tight and excellently controlled and textured, there's no bloatiness or mud to be found within the whole frequency spectrum. Subbass also rumbles nicely and has a good heft and depth to it. It isn't as big and authoritative as the KZ ZES but the quality makes up for it. The quality of the bass just makes the bass guitars have this rumbly and textured ring that I think can only be found in higher-end IEMs. Additionally, drums sticking and riffs are also transparent and free from any fuzziness. Truth be told, I can't quite find any fault with the bass, and I much prefer this bass response rather than the Yume Midnight bass. Bass heads and neutral heads will approve of this bass quality and quantity, since the bass isn’t your typical bloomy and soft bass, it’s high quality and never loses its control even with complex tracks. This also might be the best bass response I've heard so far from KZ, no not just from KZ but all of the IEMs I have right now, yes even with EQ.

With all this praise, if I have to nitpick, I think a lesser bass quantity will be more welcome for the balanced version. And this bass quantity should be for the bass version instead.

Midrange 8/10
Both male and female vocals have a tinge of brightness to them, but it is still lush, nuanced and highly detailed. Female vocals are sparkly, well-articulated and has enough energy to sound angelic (it is very eargasmic for JPOP and KPOP). Male vocals also exhibit good weight and raspiness to them, however they still have a bit of leanness and it isn't that organic sounding like the Yume or DQ6S. Tenor singers highly benefits with the midrange of EDA as it is full of clarity and quite energetic.

If I have to summarize it, vocals on the EDA Balanced are transparent, lush and clean, but isn't that smooth sounding. Moreover, instrument fundamentals are highly nuanced and the attacks and decay of notes are well audible. Percussion, strings and wind instruments are superbly transparent and highly nuanced in the whole soundscape.

Treble 9.5/10
Excellently extended and isn't glassy or brittle like the CRA. If I may relate it to the CRA, think of CRA treble but without the hotness, artificialness and aggressiveness. Upper treble has a downward sloping response which is in line with the Harman Target making the overall sound very transparent while avoiding harshness or stridentness. Guitar and higher pitched piano keys are resolved perfectly but may sound too energetic in some tracks. I can't also detect any major peaks when used with Kbear 07 tips, stock tips unfortunately show the 6 and 8kHz peak.

The overall sound of the KZ EDA is slightly lean, making the highlights in the treble area front and center. The sense of dynamics and resolvability of the dynamic driver is clearly flexed here. The harmonics of certain instruments are just retrieved wonderfully in the treble region, while microdetails (e,g room reverb) are slightly muted. Guitars also shines with the said treble presentation, its precise, clean and has enough energy to sound full and dynamic, while also avoiding harshness and sibilance.

To be honest with right eartips KZ EDA Balanced has one of the best treble presentations I've heard so far, on par with Yume Midnight, with EDA Balanced being a tinge brighter, both have the same resolving prowess in the treble region. Surprisingly, the treble presentation has the same characteristic as my ZEX Pro with Elysian X EQ. If you tried the ZEX Pro with that EQ you'll know what I mean with the EDA.



Technicalities

EDA Balanced

• The quality of the dynamic driver in the KZ EDA Balanced just screams quality and fine engineering. The new driver seems to resolve the whole frequency spectrum with finesse and poise, I can’t detect any congestion and frequency bleed that even the Yume Midnight has in some of my tracks. The driver just has this speedy nature that is really hard to find even in the $50 range. The technical prowess of the EDA Balanced driver is an experience I think many people should try even once, its literally screaming “Look at me, I’m more resolving than some of the hybrid sets in the price higher than me!”.
• Soundstage is tall, wide and spacious, it has this wow factor out of the box, and will make your music super engaging and dynamic. Think as if you’re in a concert hall with a hearing booster in your ears, just jamming and watching a certain band do their thing. That’s what it feels like with the EDA Balanced.
• Separation and imaging are excellent, and all instruments has noticeable distances within that tall soundstage, there’s also some tracks where I can somehow feel how high and low some instruments are on the stage (Dear by Ito Kashitaro). The soundstage size of the EDA is I think can only be found in higher end IEMs; it is unreal that you can do this kind of soundstage in this price range…. With all of this praise, however, staging still needs some improvement as some lower pitched instruments are skewed and are a little forward in some songs, but otherwise impressive soundstage and imaging by the EDA Balanced.
• The overall sound isn’t that organic sounding like per say Heart Mirror or Yume, however the dynamics, speed and fun it provides to my library is just a joy to listen to and I much prefer this kind of sound presentation rather than the perfectionist neutral Harman IEMs like the Yume that lacks the energy and more for a critical listener who want to look for flatness in their music rather than to jam with it. Whenever I play my music with the KZ EDA it feels like I’m being rained with energy every time, it’s just the right of aggressiveness for my ears.

Even my non-audiophile friends are banging their head when they play their favorite song in my KZ EDA Balanced. I also let them try my ZEX Pro, Heart Mirror and DQ6S but only the KZ EDA makes them jam like that..hahaha

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EDA Bass

• Driver quality and speed is the same as the balanced version, and technicalities punches way above its price range. The driver has better coherency and performance than the DQ6S and ZES.
• Soundstage is impressive, and is the most immersive out of the three (ZES soundstage can’t even compete), it also has more depth than the Balanced Version.
• Separation and imaging are also excellent even beating my CA16 Pro to pieces, the driver in the EDA just resolve each frequency band with articulation and speed, however even with the immersive soundstage, the staging of instruments are still skewed in some tracks.
• Microdetails, dynamics and timbre are the same as the balanced version, with the Bass Version having more heft to the overall sound.

EDA High Resolution

• The driver speed and resolving prowess are a bit better than the EDA Balanced but some peaks aren’t that controlled or subdued.
• Soundstage is much smaller than its brothers (concert hall like presentation vs small room), but it has a more open and airier feel. The dimensionality of the overall sound is flat and 2D-ish.
• Separation and imaging are also excellent, I can locate the instruments with accuracy within the soundscape, instruments have proper distances to each other and isn’t mushy or veiled. Vocals are also front and center and does not disturb any instruments whatsoever.
• Due to the focus at the treble region and subdued bass response, the overall sound may be perceived as pale and not that dynamic compared to its brothers.

Music Analysis

In this section I will mainly use the EDA Balanced for analysis, some notes will be added for the Bass and High-Resolution Version.

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1. Hamu Test “Multiple tracks arranged by Hamu” (Played in HibyMusic)

The tracks in this section, will test the IEM ability to naturally replay and stage musical instruments like piano, guitar, violin and drums. This section will also test imaging, detail retrieval and separation. Most of the tracks here also hates V-shaped IEMs.

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Most of the tracks in this section are very dynamic, full of energy, superbly detailed and wide sounding. All instruments are full of articulation and nuances, like at the start of track サクラモチ, it literally sounds like I’m in a sidewalk and there a musician jamming with his guitar and triangle, I can feel the whole soundscape and it feels really open and amazingly real. Instruments are distanced 360 degrees around my head and no details are escaping within the soundscape even the attack and decays of cymbals or little sparkling effects at the distance are audible and articulated really well. Additionally, listening to track 流星をくぐって, I can somehow hear how the sound of the waves of the ocean go back and forth while the drums starts to jam at the start… it is just amazing how EDA Balanced retrieves those little details, like I don’t even know if I’m listening to a $30 dollar IEM anymore, its unreal really…oh..ah my hype engine is getting off again, I must stop..hahahah., I’m quite speechless right now on what I’m hearing, I don’t want to analyze this track collection anymore, it’s just beautiful sounding with the EDA Balanced, I also think the replay is much more amazing in the EDA Balanced compared to Yume Midnight…..please someone tell me what’s happening.

Bass Version: too bassy, but almost sound the same as the EDA Balanced with peaks being more noticeable

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High Resolution Version: airier sounding but lacks dynamics, flat sounding, no wow factor.

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Replay Rating: Beautiful

2. Shiroku Yawarakana Hana by Nagi Yanagi (Played in Apple Music)

Female Vocals, Driver Speed, Soundstage, Bass Response, Separation

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What the fudge is this…please help. It sounds beautiful oh no, like the soundstage is really wide and open, Nagi’s voice is lush and super detailed, the instruments also have proper distances within the soundstage and I can imagine how high or low the instruments are, like what the fudge. Plus, at 1:38 there’s splashing effects that are circling at the back of my head and I can imagine how far and close they are to me…. Moreover, the strings, the strings man, like bruh why are they so articulated like all notes are just shown with transparency within the stage even if there’s so much happening in the background. Like, like this is just the same with the Hamu Tracks test but more extreme. Hahaha, this is unfair.. Am I even allowed to listen to this track like this?

Bass Version: has more depth than the EDA Balanced, bass more enthusiastic. Again, it almost sounds the same as the EDA Balanced with peaks being more noticeable

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High Resolution Version: a bit flat sounding, sounds more detailed but dynamics are almost non-existent.

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Replay Rating: Beautiful

3. Roller Coaster by SawanoHiroyuki[Nzk]:Gemie (Played in HibyMusic)

Female Vocals, Driver Speed, Bass Response, Separation, Dynamics

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The synthesizer beat and its nuances throughout the soundscape is clearly audible and are spread out at the back, front, left and right side. The dynamics of this track with KZ EDA Balanced just makes me want to ignore the details and just jam with the music. The bass response throughout the track is just full of texture and slam, while also giving space and air to the midrange and treble. Moreover, little microdetails within the chorus are also retrieved quite wonderfully and they are not that forward or brittle into the mix like the CRA. Gemie vocals is at the edge of being shouty at some point in the track (01:55) but its otherwise sparkly and controlled most of the time. The soundscape is not that wide like my ZEX Pro with Hypocrisy EQ, but the dynamics and microdetails made up for it. Overall, the replay isn’t that natural but the energy that EDA Balanced gives to this track is just amazing and I think many people will enjoy this track with the EDA Balanced.

Bass Version: more bass, more depth to the soundstage, peaky treble edges/transients

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High Resolution Version: too bright, there’s more air and nuances within the soundscape but lacks the energy that its brothers provide.

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Replay Rating: Superb

4. Toumin by Yorushika (Played in Apple Music)

Female Vocals, Midrange Quality, Resolvability, Soundstage

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The electric guitar, bass guitar are drums notes are well defined at the start, and as the rhythm changes at 0:15 the soundscape begins to open and microdetails starts to pop out around my headspace. The cymbals throughout the track maybe perceived as too energetic but the twist is it never sounds harsh, sibilant or peaky, how the driver control the treble region is very good and the attack and decay of cymbal crashes are well articulated within the soundscape. Suis voice throughout the track is sparkly and energetic and never feels recessed or bloated by the bass or treble region. At certain complex part of the track like at (02:22), the EDA Balanced retains its resolvability prowess, like I can still the distances of the instruments within the stage, but the 6kHz and 8kHz peak starts to get noticeable, and cymbals became too forward into the mix.

Bass Version: more soundstage depth, bass guitars are more audible and textured, Suis voice is a bit peakier. Same dynamics but downgraded detail retrieval.

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High Resolution Version: higher pitched instruments are more forward, bass guitars are less audible, cymbals crashes are peakier, Suis voice is leaner and a bit shouty specially at the chorus part. More air and openness compared to Balanced version.

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Replay Rating: Excellent

Comparison
EDA Balanced vs Yume Midnight, CCA CRA, Heart Mirror and KZ ZEX Pro
EDA Balanced beats all of the four IEMs when it comes to dynamics, transients and soundstage immersiveness. Tonal balance, correctness and timbre still go to Yume Midnight, but the overall fun and wow factor goes to EDA Balanced. CCA CRA can go now and get out of this comparison, since EDA is just CRA but refined to a T. Heart Mirror gives a good fight when it comes to organic-ness to the overall sound but falls short when it comes to staging, detail retrieval, bass quality, transparency and overall resolvability. ZEX Pro is more relaxed sounding but has a glaring flaw (12 kHz dip and 8kHz peak), EDA Balanced has no glaring flaw when used with proper eartips and sounds like ZEX Pro with Elysian X EQ. Truth to be told EDA Balanced beats the my ZEX Pro to pieces that its accessories are immediately with the EDA Balanced right after I tried it out of the box, like literally, just right after I played the first track, I know immediately the EDA Balanced will be my dailies.

EDA Bass vs KZ DQ6S, KZ ZES, KZ ZEX and CCA CA16 Pro
Bass cleanliness, quality, and texture goes to EDA Bass. Soundstage immersiveness and detail retrieval also goes to EDA Bass. KZ DQ6S however, wins when it comes to bass bloom and organic replay, ZES on the other hand, wins when it comes to bass air and unique darkish upper treble extended signature, lastly CCA CA16 Pro wins when it comes to quantity and bass rumble. ZEX? lol no.

EDA High Resolution vs CCA CRA, Heart Mirror, KZ EDX
Like its brothers, EDA High Resolution wins when it comes to soundstage, driver speed and dynamics. CRA wins in detail retrieval but most of the time the overall sound is brittle and over sharpened. Heart Mirror crushes the EDA High Resolution when it comes to overall tonal balance and treble response, but EDA gives a good fight nonetheless, EDA is just too lean in most tracks, leaner than HM. However, EDA High Resolution has a more satisfying bass response and is airier sounding than the Heart Mirror, ahmm just think of EDA High Resolution as a Heart Mirror wanna be. EDX? lol no.


Mods
All IEMs in the KZ EDA is somehow sensitive with tips so please tip roll first to appreciate its sound.

1. Kbear KB07
Yes! Recommended and the cheapest option, this will remove the 6 kHz and 8 kHz peaks significantly, widens the soundstage and improves imaging. Also adds more texture to the bass, suitable for all EDA versions. Basically, unlock the prowess of all EDA Version.

2. Stock Starline Tips
No, there’s a peak at 6 kHz and 8 kHz, will not show the true prowess of the EDA. Soundstage is not that wide compared to the other eartips.

3. Radius Deep Mounts
Recommended! If you think that EDA Balanced and EDA Bass is too aggressive, sounds the best with EDA High Resolution, treble transients are much controlled with the RDM tips compared to Kbear 07.

4. Spinfits CP145
Semi-recommended! EDA Balanced and EDA High Resolutions sounds the best with it, however the dynamics and treble resolution will not be the same as the RDM and Kbear 07. Will also make the EDA Bass more v-shaped.

5. Sony EP-EX11 Tips
Only recommended for High Resolution and EDA Bass. Will remove the treble edge that those two have, but the overall soundscape will be darkish and dynamics starts to be subdued.

5. Foam Tips
Recommended! This is just like the RDM tips but treble air is a bit subdued.


Tested Synergies

Lingering Fragments of a Dynamic Realist

Tiandenhere CX-31993, EDA Balanced, Kbear 07 Tips, Nicehck C8-1 Cable

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Perfect synergy, clean, transparent and dynamic replay. I’m still mesmerized by this synergy until now. Both the dongle and EDA Balanced complements each other, EDA Balanced having this dynamism and speed, just lacking control in its transients, and the CX dongle helping the EDA to control its transients and reveal more microdetails in the midrange. Just beautiful. It is literally a needed fragment for the EDA Balanced to sound amazing.

A Mediocre Dynamic Realist

Abigail CX-31993, EDA Balanced, Kbear 07 Tips

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Sounds okayish, but the dynamics and energy of KZ EDA Balanced are not shown properly with this synergy, like it feels like the EDA Balanced hasn’t reached its full potential yet. Plus, midrange isn’t that lush compared to the synergy above.

Wanna-be a Heart Mirror?

Avani, KZ EDA High Resolution, Sony EP EX-11 Tips

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Excellent pairing, this pairing somehow mimics my Heart Mirror but is a little bit lean compared to the real thing. Treble response is almost the same but a bit peakier with EDA High Resolution. Vocal presentation is a hair lusher with HM compared to this synergy. Treble presentation still better than CRA though.

Resolution and Smaller Details

Tiandenhere CX-31993, EDA High Resolution, Radius Deep Mounts

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Unlocks the prowess of the EDA High Resolution, this synergy goes one on one with the first synergy, like they have their own perks and its hard to decide. I’m using this synergy more for my Bossa Nova tracks, while the first synergy is for most of my tracks.

Immersiveness, Depth and Rumble

Tiandenhere CX-31993, EDA Bass, Kbear 07 Tips

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Have you heard the DQ6S? Yeap this isn’t it..hahahhah…but seriously this is better than DQ6S like don’t even. The immersiveness of the soundstage is just unreal, plus that depth? Just wow. The only problem I have with this synergy is that there’s still treble peaks at higher volumes, but at lower volume it’s just eargasmic.

Technical Aspects


Recommend Tracks/Genres

• Jrock/Jpop
• Rock
• Modern Pop
• Old Pop
• RnB
• Trance / EDM
• Hip-hop
• Rap
• Bossa Nova
• Jazz

“Not that good” Tracks

• High Resolution: Most rock tracks and some female vocal tracks that are focused on high notes.
• Bass: Jazz, Acoustic and Orchestra
• Balanced: None

Non-affiliate Links
https://www.kztws.com/products/kz-eda
https://shopee.ph/KZ-EDA-flagship-m...d4&xptdk=21a348d9-31eb-4e71-b039-b32556fb92d4

Overall Rating
KZ EDA Balanced: S (On par with Yume Midnight)
KZ EDA Bass: A+ (Superseding DQ6S)
KZ EDA High Resolution: A (Just below the Bass version)

My Ranking Listo!
Recommended!

Final Words
Just wanted to point out the accessories included in the KZ EDA. The accessories are still standard KZ but the tips are much softer than their old KZ Starline but not that thin compared to DQ6S tips, moreover the cable is much softer and malleable than their old silver cable (the new cable is also more prone to oxidation).

With that out of the way, I’m still amazed at how KZ improved from ZSN Pro X to this, like the jump of sound quality is just unreal, even the CRN can’t come close to EDA sound quality. I think it will be a missed opportunity to not even try this set, cause truth to be told all of EDA IEMs have very good engineered dynamic drivers, like you can hear the quality and how the drivers are refined, the resolvability is just unreal for the price they are asking. If you are still salty about the driver gate issue, then definitely ignore this set, but if you are like me who just love to listen to their library, and just want some eargasmic experience, then I think KZ is doing something here that is worth taking a look.

Finally, thanks for reaching this part! Hope you enjoy the read, even if it is pretty long.

The KZ EDA is the new release from Knowledge Zenith and one of the surprise releases of KZ. Many thought that KZ is joking since KZ released the photos of the EDA with three pairs in the package. After looking at the KZ EDA, my first impression of it based on the photos that KZ released, was a joke for April Fool.
The KZ EDA is also one of the first to have triple pairs for its price range since you have three pairs for the price of one. The set consists of three sound signatures first is the Bass version, and the Second is Balance. The third and final set is a Hi-Res version or can be also called the treble version.

Disclaimer. I would like to thank sir Tyvan Lam and KZ ACOUSTICS for lending their trust and letting me review the KZ EDA. Rest assured that this review will be honest. No monetary compensation was gained before and after doing this written review. My reviews are all based on my hearing and preferences so expect different opinions. I am a former musician and have experience with the violin for around 3 years. We have different opinions and preferences, so always take my reviews with a bit of real talk.

Balanced Version
Lows:: 4.4
Mids::4.2
Highs::4.6
Comfort::5(best match)
Design::4
Technicalities::4.3

Package and Presentation
The box has the three pairs presented in the picture of the box and also this is my first time seeing these new looks of KZ. In the Box, it has three pairs and a set of ear tips, and a cable, but its only one cable for the three pairs.

Design and Durability
The design reminds me of the YouTube play button since the shell somewhat resembles it. The colors of the three pairs it has white silver for the balanced version, Cyan for the HI-RES version. followed by the Bass version which has the colorway of Gold. The three pairs are made out of plastic resin, The plastic resin is very common these days. The build quality is decent but still prone to breakage since it's only plastic resin.

Fit and Isolation
it's very comfortable in my ears and I didn't encounter any problems wearing it also it's very light in my ears. I have been using it for my daily sessions with these pairs it feels like I am not wearing IEM in my ears. The pair has a little bit of sound leakage but to tell you the truth it's not that noticeable. The pair goes deep in my ears and even though it goes deep it still has space for my ears to breathe.

Sound Signature
The KZ EDA has a U-Shaped kind of signature(V-Shaped in other sources). The KZ EDA has three different tunings and different emphases, but, I like the Balanced more. since it gives a very great technical aspect and mid-range performance for its price. For this review, my main focus will be the Balanced version since it's the first one that caught my attention. other versions of the EDA will be next.

Lows
The lows have great texture it's controlled by being bodied it gives great quality. Sub-bass is more prominent and it has great attack and decay. Mid-bass is great it does not being too much emphasis on the track. even though this is balanced, the bass adapts to wide kinds of tracks.

Mids
The mids are recessed but only a bit, it is still forwarded. The vocals are great but it depends on the way how they are arranged Male vocals are great, but it's not that thick. The upper midrange has a great extension with clarity, air, and sparkle and KZ surprised me here. Because I am expecting more peak and sibilance but here I didn't hear any.

Highs
The highs have a great extension giving it great brilliance in the upper mids. It also has great detail retrieval and I was surprised because it's not your typical KZ in-house sound. The typical KZ in-house sound is giving too much brilliance in the upper mids and too much emphasis in 4k and 8k. I can say that this pair is safe for sensitive ears.

Soundstage, Imaging, and separation
The soundstage, it's wide but not that deep. The imaging is great the instruments and vocals are colored not dark sounding. The separation is great it is well separated for its price range.

Timbre
I like how the instruments are well presented here, it is organic, not artificial. Violin and Piano sound so organic I can feel the real instruments in my ears. Drums and cymbals are great I can feel the attack and punch from them.

Drivability and response to sources.
The pair is easy to drive and any source can drive it to its full potential. the pair has a great response to any kind of source even a smartphone. The pair can adapt the power coming from the USB-DAC and smartphone.

Recommendations
Stock ear tips of the pair are good but have a hint of sibilance in sibilance-prone tracks. I am using a wide bore ear tip and it removes the sibilance and peak.
As much as possible when removing the cables, please be gentle since it's prone to wear and tear.
Verdict

KZ is showing us that they are coming back and this time it shows that this is their revival arc. I am amazed by KZ since they are now improving and it shows in the KZ EDA.

Sources Used
OPPO A95
UAPP( USB Audio Player Pro)
Foobar-2000
Abigail By non-VE ( CX31993 HD audio chip)
Local Audio Files that consist of FLAC
Vention 3.5mm Audio Cable Extension Cable with microphone

Test tracks.
Infermata-Spotlight kids
Dance with Bullets- Date a bullet Music.
Symphony No.5 C-minor (Fate)- Takt op destiny Music
Destiny-Takt op destiny Music.
Bagsakan-Halina sa parokya.
Time is Love-Josh Turner.
Crazy Little Thing Called Love(Remastered 2011).Queen
We will rock You(Remastered 2011)Queen
Another One Bites The Dust(Remastered 2011)Queen
Core Pride-Uverworld
The reason why(Live Ayasa Theater episode 7)
Billie Jean-Michael Jackson
Sweet Child O' Mine- Guns N' Roses
Highway to Hell-AC/DC
Database-Man with a Mission
Cherry Bomb-Silent Siren
ANIMA-ReoNa
METANOIA-Nana Mizuki
Believe-Cher
Study x Study-StylipS
No.6(ORT)- Miku Itō
Clattonoia-OxT

Disclaimer:

• KZ sent this unit to me in an exchange for an honest, unbiased review. Rest assured that this review will try its best to devoid from any bias/es.
• The following remarks and observations shall be made and owned only by me.
• No monetary compensation is/was involved before, during, and after the period of creation of this review.
• Your mileage may (and always, will) vary.

Burn-in time: 5-10 hours per day, 7 days.


Source/s used:

• Hidizs AP80
• Not-By-VE Avani Realtek Dongle
• BaseUs USB DAC
• Zishan U1 USB DAC (AKM Variant)
• Cyberdrive Feather DAC
• Non-HiFi smartphone (realme 5i, Samsung Galaxy On7)
• Local Files via Foobar and Roon, YouTube Music, Deezer, and Qobuz with UAPP.

IEM and setup configuration:

• Initial configuration: stock medium eartips, stock cable, any form of EQ or MSEB off, 40-60% volume, both high and low gain.
• Eartip-rolled configuration: KB Ear 07 eartips, stock cable, and CVJ 4-core cable (because this only has one cable ootb), any form of EQ or MSEB off, 40-60% volume, both high and low gain.

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Sound signature:

• U-shaped (V-shaped on some sources) with different emphasis across the different versions. Balanced has the most “balanced” sound signature, hence its name. Very good technicalities for its asking price and again outperformed their previous offerings by a significant amount.

Lows:

• Lows are controlled and have a good amount of elevation. It has nearly the same levels of bass to the KZ ZEX Pro/CRN but the bass on the EDA is a bit bodied or meaty when compared. It never lacked any bass presence on any tracks that are played and paired with it. Subbass is a bit dominant compared to the sub bass and has a decent average attack and decay. Not too punchy and too bloated. As a result, the lows of the EDA will cater and excel on most genres paired with it.

Mids:

• The mids on the EDA are slightly recessed but not too recessed for me to call it distant. There is a slight midbass bleed on the lower mids just enough for it to be a bit warm but not too thick. Lower mids exhibit good depth and articulation depending on the vocal presentation. Brendon Urie’s higher than usual male vocals aren’t too thick compared to their previous offerings. Upper mids are elevated with very good clarity, air, and sparkle. I have not experienced any peaks or sibilance on the balanced version which is a really good sign and can cater to those people who are sensitive to higher than usual upper frequencies.

Highs:

• The highs on the KZ EDA are also slightly elevated with a good amount of control. I did not find the treble rolled off, not at all - but those people who like their treble brighter than usual might find this lacking. Maybe I was just used to find KZ’s treble and upper mids bright so there’s that. As a result, no pierce can be heard on this unit. Detail retrieval is very good on this set and has nearly the same amount of detail when compared to my TKZK Wave before.

Soundstage, Imaging, and separation:

• The soundstage is wide and has an average amount of expansion. It is wider than deep. Separation is also very good on the EDA for its asking price because it will only get congested when the mastering/recording is poor or if the tracks are intended to sound congested on very busy tracks. Imaging is also precise for its price as it can present vocal and instrument positions precisely.

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EDA Version comparisons!:

Vs. the “Bass” Version:

• The bass version noticeably has a bigger and deeper bass compared to the bass version. Despite being a bassier version, its bass is also punchier as its midbass is elevated in this version compared to the subbass. It also has a faster bass decay compared to the balanced version, which I find odd. The mids are also much more recessed here compared to the other two versions but I still would not call it too drowned or distant. Treble is also elevated here by a bit compared to the balanced version but still has no harshness to it. Soundstage here on the bass version also has more height than the balanced. Separation and imaging are still the same.

Vs.the “Treble/Hi-Res” Version:

• The treble version presents its bass to a more linear approach. Midbass and subbass levels here are nearly identical to each other and as punchy compared to the bass version. This version also has the least midbass bleed across the versions. As a result, this version is slightly “drier” in sound when compared. Upper mids are elevated but have some slight peaks only present on very sibilant tracks which can be smoothened by ear tip rolling (will explain later). Treble is also elevated and has a good amount of brightness and extension when compared to the balanced version. This version also has a greater amount of detail retrieval by a bit. Soundstage, imaging and separation is virtually the same when compared to the balanced version.

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About the eartip rolling:

• Despite not having that CRA and ZEX Pro type of upper mids sibilance and pierce, the treble version can still present slight peaks on very sibilant tracks. An eartip rolling here, basically any eartips that has a wider bore (like the KB Ear 07 eartips I used) will remove that peak on the trouble and will also improve its technicalities and mids greatly. Same result is achieved when done on the other two versions but without the fix on peaks because the other two did not have any peaks or any sibilance on my tests.

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Pros:

• For the first time in a while, none of these versions are unnaturally sibilant!
• 3 differently tuned sets for a price of one.
• Balanced version excels and will compete with other IEMs under 50 and some 60 USD.
• Bass version shows very good control and good bass presentation.
• Treble presentation has a bit better detail retrieval compared to the other two.
• Very good technical performance for its asking price. Even better than the DQ6s and ZEX Pro.
• U-shaped sound signature well done.
• Comfortable fit.
• Cable is a bit softer, again, compared to their previous products.
• Eartips are also softer, thinner, and much more flexible.
• Very easy to be driven to its full potential.

Cons:

• Treble version has a bit of upper mids peak on very sibilant tracks on stock eartips (will explain later).
• Only one cable for three pairs of drivers is a bit impractical due to the stress on the QDC 2-pins when cable rolling, at least for me.
• A cable winder or a pouch would be a very good treat for everyone (my nitpick)

The KZ EDA again, cannibalized its older siblings (in a good way) in terms of sound quality. After the release of the ZES, the EDA took a step further by eradicating further the peaks or sibilance present on sibilant prone tracks, which was a long time ago - when the KZ ZS7 and KZ ED16, both of my favorite KZ IEMs still existed. However, their sound was somehow reincarnated here in the EDA balanced and bass versions, but upgraded the presentation of the mids and technicalities even further. KZ improved again in their tuning and I’m still amazed that they can do this with only using 1 dynamic driver per side. In my opinion, they should’ve done this way before the recent fiasco happened. If KZ continues to improve this further, they can actually compete with any IEMs under 60 USD as of the moment. I would suggest KZ to explore other driver materials such as LCP, DLC, CNT or any possibly good driver materials and try to tune it properly because most of us hobbyists do not really mind that much about the driver count - we usually care more about the sound quality.


Pairing recommendation/s:

• Source: A phone will do because it is very easy to be driven fully but a neutral or balanced source will do. It can be a dongle, or a DAP, whatever floats in your boat. No need for any extra amplification.
• Wider bore eartips will improve the mids and technicalities even further. I do recommend this KB Ear 07 eartips I use because this has the most balanced price-to-performance ratio on a budget. As for the cable, this isn’t really cable-sensitive so any cable of your choice will do.

Thank you for reading!

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