General Information

Bellos Audio X2

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Introducing the Bellos X2, a Custom In-Monitor that can be built in a matter of a few days. While packing industry-leading technology such as our patented 3D Printing technology, ATOM Venting system, and the ultra-durable RCX Cable.

Build Time
Get your X2 shipped in a matter of days, not weeks.

Repair Time
Our removable faceplate design allows us to quickly and efficiently repair Custom In-Ear Monitors.

The X2 ships with the RCX cable, the most durable IEM cable on the market. Rated for 5,000 connections without fail. Our 3D Printed Shells are 20% thicker than the industry average to prevent damage of internal components.


Our proprietary technologies allow us to make the best-in-class Custom In-Ear Monitors.


3D Printed Matte Shells​

Using our patented 3D Printing technology we design all Custom In-Ear Monitors inside a 3D software with nanometer precision. The parts are printed and efficiently assembled by hand. Shortly after, the matte finish is applied to the CIEM shell to provide a very comfortable and organic fit with a “grippy” consistent seal.

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Modular Drivers​

The CIEM shell is designed to accept a pre-assembled driver package which is tested in advance to ensure it meets all specifications. Modular drivers are designed to be installed and removed without having to destroy the CIEM shell.

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Removable Faceplates​

A revolution in Custom In-Ear Monitor design. A conventional Custom IEM needs to be cut open to be repaired. Our design features a faceplate that is attached with alloy steel screws and allows us to quickly and efficiently repair Custom In-Ear Monitors.

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ATOM Venting​

A pressure relief system that vents pressures that build up in a sealed ear canal. Greatly reducing listener fatigue so you can hear more and listen longer. You no longer feel like you’re disconnected from your environment, while still enjoying all the benefits of Custom In-Ear Monitors.

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Universal-Bore Design​

Sound travels openly and freely through the Universal-Bore which acoustically shapes the sound without the use of sound tubes. This allows the drivers to breathe and unleashes the driver’s full potential.


RCX Cables​

One of the most common points of failure is the cable. The RCX Cable changes this. A proprietary designed cable connection specifically made for Custom In-Ear Monitors. Rated for 5,000 connections without fail. The RCX cable also comes with our standard 2 Year CIEM warranty.


Estimated Build Time: 3-5 Days

Driver Specs

Dual Balanced Armature Driver
1 high, 1 mid/low
2-Way Crossover

Technical Specs
Frequency range: 20Hz -18kHz
Sensitivity: 114 dB/mW
Impedance: 30 Ohms at 1kHz
Isolation: -17dB

2-Year Manufacturer’s Warranty


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