DUNU × FitEar Kaoru IEM | 6BA Per Side | FitEar Elliptical Nozzle

DUNU × FitEar Kaoru In-Ear Monitor

A landmark collaboration between DUNU and FitEar — six balanced armature drivers per side, FitEar's expert cavity design, and a natural, lifelike tuning that bridges professional monitoring and audiophile listening.

The DUNU × FitEar Kaoru is the product of two of the most respected names in high-end IEM design coming together for a single, uncompromising creation. DUNU brings its decades of multi-driver IEM engineering and award-winning sound tuning expertise; FitEar contributes its world-class CIEM cavity design, ergonomic shell geometry, and the iconic triple-structure elliptical nozzle that sets the Kaoru apart from any universal IEM on the market. The result is a 6BA-per-side in-ear monitor with a dark black inner cavity, French grey face panels, natural and lifelike vocals, effortless high-frequency extension, and a premium accessory package including the FitEar 013 stock cable, SpinFit CP100 and DUNU S&S ear tips, and a Pelican 1010 military-grade carry case.

Key Features

• DUNU × FitEar Collaboration — Two Legends, One IEM: DUNU is renowned for its multi-driver IEM engineering and consistent award-winning performance. FitEar is one of Japan's most respected CIEM houses, trusted by professional musicians and audiophiles worldwide. The Kaoru is the first time these two brands have combined their expertise into a single universal IEM, making it a genuinely rare and collectible piece of hi-fi history.
• 6 Balanced Armature Drivers Per Side — Full-Spectrum Resolution: Six carefully selected and professionally tuned BA drivers per channel cover the full frequency spectrum with precision. The configuration delivers natural, lifelike vocals with exceptional midrange presence, extended and airy treble, and a controlled, articulate low end — without the coloration or roll-off that plagues lesser multi-BA designs.
• FitEar Triple-Structure Elliptical Nozzle — Unique Fit and Seal: Unlike the round nozzles found on virtually every other universal IEM, the Kaoru uses FitEar's proprietary elliptical nozzle with a triple-structure design. This geometry mirrors the natural shape of the ear canal, providing a more secure seal, improved isolation, and a more consistent acoustic coupling between driver and eardrum.
• FitEar Expert Cavity Design — Custom-Like Comfort in a Universal Shell: FitEar's years of CIEM design experience are directly applied to the Kaoru's shell geometry. The dark black inner cavity and French grey face panels are not just aesthetic choices — the shell shape is ergonomically optimized for extended wear, with a lightweight ABS construction that sits flush and secure in the ear.
• FitEar 013 Stock Cable + 3.5mm OYAIDE Plug: The Kaoru ships with FitEar's own 013 stock cable, terminated with a premium 3.5mm OYAIDE single-ended plug — a level of cable quality rarely seen at any price point. The FitEar two-pin connector system ensures a secure, reliable connection with low contact resistance.
• Premium Accessory Package — SpinFit CP100, DUNU S&S Tips, Pelican 1010 Case: The Kaoru's accessory set matches its flagship status. SpinFit CP100 and DUNU S&S ear tips cover a wide range of fit preferences and sonic signatures, while the military-grade Pelican 1010 carry case provides genuine protection for a genuine investment.

Specifications

⚠️ The Kaoru uses FitEar's proprietary two-pin connector, which is not interchangeable with standard 0.78mm 2-pin cables. Please ensure any aftermarket cable is specifically compatible with the FitEar two-pin standard before purchasing. Stock cable is 3.5mm single-ended only.