Disclaimer: Thank you and kudos to KZ for arranging this review unit, all herewith are based on own observation with no affiliation nor obligation, noob observation - please enjoy.
Packaging / Presentation :
Packaging wise is standard small little white cardbox, IEMs are metal alloy built with semi open vent on faceplate. This package comes with 3 pairs of silicon tips in S M & L , stock cable is the usual white one as before.
Equipment used / Music choices :
ASUS Laptop WIN 11 with MusicBee App built-in Realtek Soundcard
xDuoo TA05 tube amp 6.35SE, FSA Beyond HD amp 6.35SE and Supplier HD Linear Supply
iMac - Linux - RPI4 8GB - Volumio Spotify Connect - Topping DX3PRO - L30 6.35SE
iMac - Linux - RPI4 8GB - Volumio Spotify Connect - ifi Zen Dac v2.0 - ifi Zen Can 6.35SE/4.4BAL
Sony walkman A55 with Fiio A5 Portable Amplifier 3.5SE / Fiio M9 DAP 3.5mm SE, 2.5mm Bal
LG G7+ / Samsung Note8 / iPhone11 - Apple Dongle [UAPP / Tidal] 3.5mm SE, Samsung Dongle, X1, CXpro, Shangling UP5 2.5bal/3.5SE/4.4bal
Music Tracks - variety of EDM, pop, jazz, country, instrumental, classical, audiophile male/female, chinese / cantonese favourites.
Some of tracks used -
Need you tonight - INXS, Jack and Diane - John Mellencamp, I'm Good - David Guetta and Bebe Rexha, Dancing in the Dark - LOLO, Charger [ft. Charli XCX] - ELIO, Islands in the Stream - Dolly Parton and Kenny Rogers, Dire Straits - Tunnel of Love, Billie Ellish - Happier Than Ever, Aha - Hunting High and Low, Camomile - Fields of Gold, Chicago - You are the Inspiration, Depeche Mode - Strange Love, Eagles - Hotel California, Ed Sheeran - I Don't Care, Fleetwood Mac - Big Love, Glass Tiger - Thin Red Line, Symphony No.5 in C Minor by Beethoven, etc..
Sound Impression :
Tonality and Timbre - sounds rather organic and natural despite it's a DD+multi BAs set, kinda smooth and silky flowing sounding
Bass - this may be the strength and weakness of this set, good quantity and quality thus is thumpy and slamming, hits hard and deep, transient speed is fast and snappy, yet decay too much to the 1K region. The bass is actually well controlled and accurate, kick drum and strikes are quite precise. Bass lovers will definitely like and enjoy this set. Imapctful.....lol
Mids - vocals are actually enjoyable on this set, kinda of clean, clear and concise voice. Brightness and tonality is just correct with organic and natural feel, however due to extended bass, there is a slight veil, mist or haze present in the mix, a little pity IMHO....
Treble - instruments seperation and imaging are clear and concise, accurate and precise, yet not sibilant, cymbals and high hats are great due to the Multi BAs, extend well and lots of micro details, resolving and very enjoyable.
Soundstage is considered moderately wide in width, average wise in depth and height. Instruments seperation and imaging is good as well. Resolution and precision is above average. Cohesion of the DD and multi BAs are done pretty well.
Changed the tips to Spinfit CP100+ and CP145 which is much better in pivotting, flexibility to direct the nozzle into the ears, the provided silicon tips sometimes will hinder and not give a proper seal and isolation.
Changed the stock cable 3.5SE to a balanced 4.4 pure silver cable to achieve better power and sound transfer.
Comparison to TRN VX PRO
TRN VX PRO does not have that veil mist haze, sounds much more crisp and clear, more transparent and forward sounding in comparison. However those that are sensitive to treble high will find it a little sibilant, and therefore the CCA HM20 will be a better choice in these scenario.
Final Thoughts
CCA HM20 will be much suitable to Music Genres like Pop, New Waze, Instrumental, EDM, and less so for Classical.
This is a pretty good tuning set for those that enjoy Bassy, hit hard and deep, thumpy and slamming. Mids Vocal that are presented well, crisp and clear, bright and quite organic. Treble highs that are well extended to enjoy a lot of fine micro details and resolution at the price point.
