


FIR Audio Radon 6 CUSTOM FIT In-Ear Monitor
(The Universal Fit is discontinued)
Radon 6
The Custom-fit model is limited to 100 units world-wide and only 20 units produced per month. Celebrating 5 years in pursuit of the ultimate in-ear monitor listening experience.
We’ve applied everything we learned from Frontier Series and mindfully retuned our popular 6-driver model and arrived at a leaner, reference warm sound signature. Featuring proprietary technologies such as Kinetic Bass, ATOM Venting, Open Acoustics, and Rigid Technologies.
The Custom-Fit model features all of the premium design options of the Frontier Series. The Rn6 CIEM also ships with the exclusive pure silver cable with copper shielding.
5 YEAR ANNIVERSARY
Celebrating 5 years of FIR Audio. Releasing a new Limited Edition model with an all-new design and sound signature.
KINETIC BASS
A hybrid conduction technology that takes the IEM sound experience to a whole new level. Kinetic Bass is a bass you can feel.
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.
OPEN ACOUSTICS
Open drivers with no sound tubes that radiate sound directly into the Sound Reactor which results in a much larger sound stage.
RIGID TECHNOLOGIES
Proprietary technologies that provide industry leading durability and serviceability of our in-ear monitor products.
DRIVER SPECS
1x Kinetic Bass 10mm Dynamic Driver
2x OpenDriver Mid BA Driver
1x OpenDriver High-Mid BA Driver
1x OpenDriver High BA Driver (with Sound Reflector)
1x OpenDriver Ultra-high Electrostatic Driver
TECH SPECS
Freq. Range: 20-20kHz
Impedance: 28ohms
FEATURES
Pure silver, Oxygen-free, copper shielded Black Cable
Gold-plated balanced 4.4mm Termination
Internal ATOM and ATOM X Modules (CIEM)
WARRANTY
3 Year Warranty
Pairs well with

FIR Audio Radon 6 CUSTOM FIT In-Ear Monitor
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
Please read our FAQs page to find out more.
What products does Audio67 offer?
Audio67 specializes in high-quality headsets and microphones for gaming, professional use, and casual listening.
Where can I purchase Audio67 products?
You can buy Audio67 headsets and microphones from our official website, authorized retailers, and select online marketplaces.
Are Audio67 headsets compatible with all devices?
Most of our headsets are compatible with PCs, gaming consoles (PS5, Xbox, etc.), mobile devices, and tablets. Check the product specifications for detailed compatibility.
Are Audio67 headsets wireless or wired?
We offer both wired and wireless headsets. Please check the product description for details on connectivity.