KZ IE80
Dynamic Driver

One of KZ's classics are the KZ IE80, replicas of Sennheiser IE80. These earphones have a very balanced, yet warm sound. If you're not a basshead, and can forgive the lack of sub-bass in these, you will enjoy every moment, as long as you have a very good seal. You'll need to rotate the switch to the middle (at least) to warm-up the sound signature, else it'll be too plain and cold.

Truth be told, they sound almost as good as the KZ DT5, only with a much lighter low-end and slightly brighter highs. Still, quite a rare find these days, and I'm not sure whether they are still being produced, but they're worth a try.

Pros
Cons
  • A very balanced sound with accurate mids, crisp highs and balanced bass response, especially the excellent mid-bass and low-mids.
  • The ability to control the amount of bass in the sound signature with a tiny switch is pretty impressive.
  • I find them comfortable to wear, but your mileage may vary.
  • The cable is detachable and has proper strain reliefs. It's also very soft and easy to roll for storage.
  • The bass isn't remarkably deep, and there's very little sub-bass, if any. Also, the bass might get distorted by extremely deep bass content (mainly in Trap music).
Package & Accessories
Package:

Corrugated fiberboard

Ear Tips - Single-Flange:

S+M+L, black, Ø6mm bores

Extra:

Bass adjustment & cleaning tool

Build & Materials
Housing:

Plastic (glossy) + metal*, Ø6mm nozzles (Ø5mm openings), cable connectors (proprietary), switch*

Cinch:

TPE

Y-Split:

TPE, soft strain relief

Cable:

Detachable, 120cm, TPE, soft, straight

Plug:

TPE, 90° angled, short, soft strain relief

  • The housings have metallic back plates.
  • The housings have sound signature switches. Vibro Veritas confirms that these switches increase/decrease bass response. The measurment was performed with both switches positioned exactly halfway the scale.
Comfort & Fit

I'm usually having a hard time with over-the-ear kind of earphones, but these proved to be quite comfortable. They hold just fine without any ear loops required and maintain a great seal. Still, this is a very individual experience.

Lows / Bass

The main drawback with these earphones is the lack of sub-bass, but many people will see it as a possitive thing, because these earphones provide a balanced/natural sound without overemphasizing the bass. Still, I wouldn't recommend these earphones for bass-heavy music because it might get slightly distorted.

Mids / Vocals

The mids and vocals are warm, crisp and precise. Vocal-oriented music sounds simply awesome. Acoustic instruments sound excellent.

Highs / Treble

Even though there isn't any unordinary microdetail, the highs are crisp, quick and precise.

Frequency Response