boarseman CX98

ø10mm Dynamic Driver


After the great KR49i, I went on to try the more expensive CX98. I have to say, these are one of the best earphones I've ever heard. These have a great bass, but it's moderate and leaves enough room for the mids and highs to shine. The mids are detailed, and the highs are bright and crisp. The build quality is superb, just like KR49i's build quality.

Just like the CX98S, these earphones are for audiophiles, not for bassheads.


  • Super clear mids and bright highs. The highs are more emphasized than in CX98S.
  • Not bassy, but very bass-capable, entirely up to your DSP/equalizer.
  • Beautiful design and a very high build quality.
  • A bunch of accessories, like a shirt clip and a variety of ear tips to choose from, including double flange tips and foam tips.
  • A beautiful presentation in a wooden box.


  • The highs could be too piercing and tiring on long listening sessions. A simple equalizer can fix that.
  • Basically no sub-bass.
  • Apparently, S size tips are not included.

Package & Accessories



Ear Tips - Single-Flange:

M+L, white (translucent), ø4mm bores

M, white (translucent), ø4mm red bores

M, grey (translucent), ø4mm red bores

Ear Tips - Double-Flange:

M, white (translucent), ø4mm bores

Ear Tips - Foam:

Memory foam, red, ø5mm black bores

Shirt Clip:

Black, 360° cable holder, branded


Orange + blue, rectangular, branded

Build & Materials


Metal, ø5mm nozzles, stiff strain reliefs


Metal, no strain reliefs


PVC-coated, 120cm, soft, straight


Metal, straight, short, soft strain relief

Comfort & Fit

Surely you'll find the tips that most suit you. I also had no trouble with finding the perfect tips for myself.

Lows / Bass

These earphones aren't bass-heavy per se, but they are very bass-capable, in a sense that the bass is extremely precise. If you want a more bassy sound, just turn on the bass booster on your device and enjoy a distortion-free sound.

Mids / Vocals

The mids are clear and very detailed. Some of the best mids I've heard. Could be slightly harsh sometimes can even overpowered by the sharp highs.

Highs / Treble

The treble is crisp and very detailed, yet slightly piercing, which can be tiring. You hear every little high hat and cymbal. Slightly harsher than on CX98S.

Frequency Response

Exposed bass vents:

Sealed bass vents:

Published on 2015-11-17 22:11:09 (GMT)
CX98S K25S KR25D KR49i