ø5.7mm Dynamic Driver


The tiny QM03 by QCY with the unique tips really cought my eye. Unfortunately, the build quality is pretty low, and I realized that in order for them to sound good and loud, you'll have to use a headphone amplifier. They just require more power for the overall volume and especially the mids and highs.


  • For such tiny drivers, the bass is pretty amazing.
  • When you're on an amplified source, the mids sound above-average nice.
  • Very unique design, size and ear tips.


  • The highs and mids are very silent on low-power outputs, like mobile phones.
  • The maximum loudness is relatively low. You'll need an amplifier to push them to their true limits.
  • The overall build quality is low. The housings may look like metal, but it's just glossy plastic.
  • Finding compatible tips for these earphones, aside from the included ones, is very unlikely.

Package & Accessories


Soft paperboard

Ear Tips - Single-Flange:

S+M+L, unique, grey (translucent), ø2mm bores

Build & Materials


Plastic (glossy), extra-small, ø3mm nozzles, stiff strain reliefs


Plastic (matte), single-button


TPE, soft strain reliefs


TPE, 121cm, semi-soft, mildly bent


TPE, straight, short, soft strain relief

Comfort & Fit

You'll most likely need to use the large tips, since the housings are so small. When you get a good fit, they stay inside and you forget they are even there. They are extremely light!

Lows / Bass

Even on low-power sources, the bass is wonderful, just a bit silent. But on amplified sources, the bass shines. It's deep and punchy.

Mids / Vocals

When you're with a low-power device, the mids are aweful. But if you're on an amplified source, the mids sound pretty good and detailed, with a great channel separation.

Highs / Treble

On low-power sources, the highs almost don't exist. On amplified sources, the highs are gentle and moderate, not very detailed though.

Frequency Response

Published on 2015-11-28 14:47:09 (GMT)