The Musician's
Ultimate IEM

A punchy bass, silky and crystal clear mids and highs
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4 Driver IEM

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.

Technology inside the 4 Driver All Balanced IEM

4 Driver IEM Specifications

Drivers: 4 4 x Balanced Armature Drivers (Low/Mid/High & Super High)
• 1 Balanced Armature (Low),   • 1 Balanced Armature (Mid),   • 1 Balanced Armature (High),   • 1 Balanced Armature (Super High)
Isolation -26 dB Isolation (-36dB for Custom)
Bores 2 asymmetrical bores
Crossover 4 Way
Frequency Response 18Hz to 23kHz
Sensitivity 114dB SOK @ 1mW
Impedence 13 Ohms @ 1kHz
THD <=1% @ 1kHz
Warranty 1 year

Artists using our 4 Driver IEM



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Diljit Dosanjh

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aisyah aziz

Aisyah Aziz

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Craig Wayne Boyd

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Robert Randolph

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marc urselli

Marc Urselli

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Toygar Isikli

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What comes in the box

 1 Pair of IEMs with carbon fibre faceplates affixed
 1 pair of spare faceplates with allen key
 1 Stealth IEM pro cable
 1 Stealth IEM cable with in-line microphone
 3 pairs of foam ear tips (different sizes)
 3 pairs of silicone tips (different sizes)
 1 pair double flange ear tips (different sizes)
 ¼ inch jack
 1 Soft-shell IEM case
 1 suede IEM pouch
 1 cleaning cloth
 Warranty Card

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