Bellos Audio X2 CIEM

Build Time:
2 Weeks
Key Features:
  • 2 driver in-ear monitor
  • Punchy, clear tone with crisp mids
  • 'Air Canal' Partial Custom Design for maximum comfort
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The Bellos Audio X2 custom in-ear monitors are designed for professional musicians and music enthusiasts alike. The X2 delivers a mid-centric performance with a neutral but energetic tonal coloration that puts vocals front and center.

The X2’s technical side is what makes it stand out, with an impressive level of separation and air through the mids and lower treble that allows every instrument to command its own space. Featuring the revolutionary In-Air Canal technology, these custom earphones feel so comfortable that you’ll forget you have them in.

Like all X-Series, the X2 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 and Removable Faceplates for quicker service and repairs.

In-Air Canals

If you’ve ever used Custom IEMs before, you know that when you open your jaw to sing or talk, your ear canals change shape. As a result the CIEMs sometimes lose seal and feel uncomfortable in the ear.

Introducing the revolutionary In-Air Canal technology from Bellos Audio. A proprietary design that enables a full seal at the aperture (the entrance) of the ear canal. Giving all the benefits of CIEMs with out the drawbacks. They’re so comfortable you’ll forget you have them in! 

Atom Venting DiagramAtom Venting Diagram
ATOM Venting

A pressure relief system that vents air pressures that build up in a sealed ear canal. Expanding the soundstage and greatly reducing listener fatigue so you can hear more and listen longer. You no longer feel like you’re disconnected from your environment. 

3D Printing Diagram3D Printing Diagram
3D Printed Matte Shells

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

RCX Cable DiagramRCX Cable Diagram
Optional RCX Cables

One of the most common points of failure is the cable. Bellos Audio's proprietary RCX Cable changes this. The only cable connection specifically made for Custom In-Ear Monitors. Rated for 5,000 connections without fail.

Removeable Faceplates DiagramRemoveable Faceplates Diagram
Removable Faceplates

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

Modular Drivers DiagramModular Drivers Diagram
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 damage and destroy the CIEM shell.


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Drivers 1 High, 1 Mid/Low
Frequency Response 20Hz - 18kHz
Noise Reduction -17dB
Impedance 41 ohms @ 1kHz
Sensitivity 114dB/mW
Crossover 2-way

Audio Performance

Drivers2 Drivers
Sound Signature
Punchy, clear tone with crisp mids


Low Mid

Mid High


Resolution (7)

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Australia’s first in-store 3D ear scanning service.

In partnership with Auricle Digital, Minidisc can provide in-store or on-site 3D ear scans using the latest light and laser based technology. The 3D scan process is less invasive than the traditional physical impression method, and produces a more comfortable CIEM. 3D scans take 30 minutes or less, with a success rate of 95%.

Ear Scans
Australia’s first in-store 3D ear scanning service