U4 | The Musician's Choice
Universal 4 Driver Balanced In-Ear Monitors
- Punchy Bass, Silky Mids and Crystal Clear Highs
- High-Resolution 3D Audio made for professionals
- In-built hearing protection Klarity Valve© for all-day listening
Ships next business day
Other Stealth Sonics In-Ear Monitors
Custom Options Available
For those chasing sonic perfection, the U4 is available as the C4 Custom In-Ear Monitors.
Achieve up to -36dB with an absolute seal, translating into the best possible isolation and sound reproduction from our In-Ear Monitors.
Have it your way, however you want it.
Reviews and Endorsements
Marc Urselli
Grammy-Winning Engineer
U2, Elton John, Joan Jett
Yuna
Singer-Songwriter
Top 10 US Billboard R&B
Casey James
Vocalist
Top 3 in American Idol S9
Craig Wayne Boyd
Singer-Songwriter
Winner of The Voice S7
Walk Off The Earth
Indie Pop Band, Canada
Juno/Streamy Award Winner
Signature Sound Profile
Punchy bass, silky and detailed mid range and crystal clear high and super highs for a fully balanced listening experience.
Free Your Ears
At only 4 grams per side, experience ultralight comfort with the lightest IEMs ever.
Preferred Choice For Musicians
Sound usually comes down to personal preferences. The U4 happens to be the preferred In-Ear Monitors for many musicians.
Reduced Ear Fatigue
Listen all day with our proprietary designed in-built pressure relief Klarity Valve©.
Technology inside the U4
Click on the icons to learn more.
Balanced Listening Experience
The 4 driver In-Ear Monitors 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.
Packed With Technology
At only 4.16 grams a side, the U4 is deceivingly light yet packed with proprietary innovations stemming from Audiology and Aerospace, to allow for the best listening experience, reduced ear fatigue, soft touch comfort, amongst other In-Ear Monitors in the market.
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Celebrated By Musicians
Our most popular till date, the U4 is the preferred In-Ear Monitors for many renowned musicians across the world. U4 has been tried and tested on the road, in the studio and on the big stages.
Learn MoreCustom Options Available
For those chasing sonic perfection, the U4 is available as the C4 Custom In-Ear Monitors.
Achieve up to -36dB with an absolute seal, translating into the best possible isolation and sound reproduction from our In-Ear Monitors.
Have it your way, however you want it.
About Stealth Sonics
With roots in Pro-Audio, Audiology and Aerospace, our carefully tuned In-Ear Monitors deliver amazing high-resolution audio, superior sound isolation, all-day ultralight comfort and in-built hearing protection for musicians, audio professionals, audiophiles and gamers alike. Designed and Assembled in Singapore, The Lion City.
Technical Specifications
| Drivers | 1x Balanced Armature (Low), 1x Balanced Armature (Mid), 1x Balanced Armature (High), 1x Balanced Armature (Super High) |
| In-Built Hearing Protection | Klarity Valve© for Pressure Relief |
| Isolation | -26dB (-36dB for Customs) |
| Frequency Response | 18Hz to 23kHz |
| Impedance | 13 Ohms @ 1kHz
|
| Weight | 4.16 Grams Per Monitor |
| Warranty | 1 Year |