View this product description in Norwegian.

The U4 or C4 is a four driver all balanced in-ear monitor (IEM) system that features four balanced armatures set to deliver to the musician lows, mids, highs and super-highs. Our most popular till date, our 4 driver system is used by many renowned musicians both on stage and in the studio.

The 4 driver IEM offers a punchy and energetic profile that is focused on delivering advanced detail and crisp transients to its wearer to heighten the music experience. The sound signature features a punchy bass, silky and detailed mid range and crystal clear high and super highs for a fully balanced listening experience.

This is housed in an acoustically-optimized composite material that uses Stealth Sonics Stealth Kompozit features that is not just very comfortable but light weight as well. Each side of the U4 weighs in at just 4.1 grams.

The U4 also employs Stealth Sonics proprietary design features such as: the Klarity valve to reduce pressure build up and fatigue in the ear canal from long usage; Stealth damping for more controlled bass response ; and SonicFlo Acoustics for resonance and cancellation reduction.