We are thrilled to unveil the X4, our flagship product from the X-Series line of Custom In-Ear Monitors. The X4 is the culmination of our dedication to delivering an exceptional audio experience to musicians and audiophiles alike. Featuring an added ultra-high driver and our proprietary In-Air Canal technology, the X4 delivers an unprecedented level of clarity, detail, and realism.

The X4’s tuning is finely crafted to deliver a reference warm sound signature that reveals every subtle detail of your music. The ultra-high driver provides an extended frequency response, delivering a very smooth and natural sound. The In-Air Canal technology enables the most comfortable CIEM listening experience. So comfortable it’s like having nothing in your ears! The X4’s are the best in class in ear monitors and are the perfect choice for anyone who demands the highest level of audio quality.

Like all X-Series, it comes with a host of additional proprietary technologies such as ATOM Venting which greatly expands the soundstage, beautiful 3D Printed Matte Shells, the ultra-durable RCX Cable Connector, Modular Drivers & Removable Faceplates for fast and easy service and repairs.


Estimated Build Time: 5 Days

(Build time starts when we recieve usable ear impressions)

A graphic showing the different types of sound effects.

Driver Specs
1 Ultra-high
1 High
1 Mid/Low
1 Dynamic 6mm Low
4-Way Crossover

In-Air Canal Technology
3D Printed Matte Finish Shell
ATOM Venting Technology
RCX Cable & Connector

3 Balanced Armature drivers
1 Dynamic Driver
Frequency Response: 20Hz – 20kHz
Impedance: 16Ω at 1kHz
Sensitivity: 116 dB/mW
Crossover: Integrated 4-Way Crossover
Isolation: -17dB (internal ATOM)

2 Year Warranty (CIEM + Cable)

Watch the X-Series Movie

Providing the most comfortable CIEM listening experience. Learn More

Venting harmful air pressures from a sealed ear canal. Learn More

Next generation computer aided manufacturing process. Learn More

The ultimate IEM cable and connector system. Learn More