The sound quality of the KZ ED10 is up for debate. Some might say they sound very punchy and clear, some might say they don't sound right.
From my experience, they sound wonderful, but there is much to improve on, especially the clarity of the mids and highs.
Pros
Rich and powerful bass and loud highs.
Well built and great looking housings.
Very comfortable to wear and maintain a good seal.
Cons
The sound needs more polishing, especially on the clarity.
The splitter is way lower than chest-level and makes the cable wiggly and hard to control.
You only get M-sized whirlwind tips with blue and wide bores. The S and L-sized tips are just generic black tips with narrower bores.
Package & Accessories
Package:
Plastic
Ear Tips - Single-Flange:
M, whirlwind, grey (translucent), ø6mm cyan bores
S+L, black, ø4mm bores
Build & Materials
Housings:
Metal, ø6mm nozzles, soft strain reliefs
Remote:
Plastic (soft touch), single-button
Y-Split:
TPE, soft strain reliefs
Cable:
Silicone (grippy), 121cm, soft, straight
Plug:
TPE, 90° angled, long, soft strain relief
Comfort & Fit
One of the most comfortable earphones to wear, thanks to the housing design. The housing pushes back against your ear slightly to keep the earphones inside your ears. The noise cancellation is wonderful thanks to the perfect seal. But if the nice whirlwind M-size tips don't fit your ears and you dislike the generic tips, you're in trouble, and you'll have to order S and L-size whirlwind tips separately, like I did.
Lows / Bass
The bass is well present and deep, and you can hear plenty of sub-bass rumble in electronic music content.
Mids / Vocals
The vocals sound nice, but definitely nothing extraordinary. The drivers actually struggle with complex music genres, like metal, and the vocals are thrown to the background.
Highs / Treble
The highs are loud and present, but overly darkish, inaccurate and sometimes even harsh.