the ultimate tool for professionals

Developed with musicians and engineers in mind. In contrast to Music series Pro330 focuses on accuracy and details. A true engineering tool.
3 Balanced Armatures 10Hz-17900Hz (+-20dB into IEC 711 coupler)
2-way crossover in Single Phase configuration Damper-free design
114dB @1kHz @0.1V 21 Ohm @1kHz
Silicone or Acrylic body 22 Ohm DC

In other words, the Pro 330v2 should be just the right amount of “neutral” for many listeners.


Pro 330v2 stands for ultimate resolution, crispy sweet highs, organic smooth mids and deep, fine-textured lows. Suitable for all kind of music. Close and intimate yet capable soundstage gives a live-like experience. Pro330v2 offers faster low frequency clearer mids and more precise highs response due to upgraded crossover design perfectly separating bass and highs.


Developed for stage and studio use. Top pick for vocalists among Custom Art’s endorsed artists.

These IEMs are meant to be used with either low impedance or higher impedance sources. High impedance sources will increase bass response and decrease high frequencies resulting in lower clarity of sound.

Price: starting from 575 EUR (end of life product)