







Delivery time approx. 1-2 weeks.
Radon 6
Reviews
"FIR Audio has created one of the best sounding IEMs I have laid my ears upon. With its W-shaped signature, flexibility with the supplied Atom modules and immersive sound it is giving me a hard time to ever put it out of my ears.
It's hard not to recommend an IEM that hits my personal tuning preference so perfectly. The entire package you get gives you not just one monitor, but four different flavors of it. Which is just the ability to finetune it to your liking that some need. My favorite modules are the Red – for when I want a more dynamic bass and an airier midrange – and the Black, for when I want that extra mid-bass bump and added weight to the lower mids.
The Radon 6 is taking the lead as IEM of the year for me and therefore it receives my full recommendation. "
FIR Audio Radon 6 Review - Headfonia
"The FIR Audio Radon 6 is the most complete and natural-sounding monitor I have heard from the company to date. It works wonderfully well with almost everything, especially if you want an open midrange with excellent levels of detail."
FIR Audio Radon 6 Review — Headfonics
Ear Fidelity
"Fir Audio once again released an IEM that is a force to be reckoned with. The Radon 6 sits in between their hugely popular Krypton 5 and Xenon 6. Not just in terms of the price, but the tuning as well.
This is a warm-ish sounding, thick and engaging IEM that doesn't compromise technical performance. It comes with the worlds-best bass technology, incredible soundstage, and design/build quality that is simply the best on the market. While I personally still prefer the Krypton 5, I'd like to remind you that the KR5 is my favorite IEM of all time.
If you're looking for a high-end IEM that does it all, has interchangeable modules to alter the sound and that is just a piece of art in every single way possible, buy the Radon 6 while you still can."
Fir Audio Radon 6 Review • Ear Fidelity • Pleasing Warmth
The Radon 6 is a limited-edition anniversary model. The Universal Fit model is limited to 300 units worldwide. The Custom Fit model is limited to 100 units worldwide and will be produced only 20 times per month. We're celebrating five years of pursuing the ultimate in-ear monitor listening experience.
We've applied everything we learned from the Frontier series and carefully retuned our popular 6-driver model to achieve a leaner, warmer sound signature. Equipped with proprietary technologies such as Kinetic Bass, ATOM Venting, Open Acoustics, and Rigid Technologies.
The Rn6 Universal-Fit model features an all-new black machined aluminum case, beautiful sapphire crystal glass covers, and a pure silver oxygen-free copper shielded cable designed and built exclusively for the Radon 6.
The Custom Fit model features all the premium design options of the Frontier series. The Rn6 CIEM also comes with the exclusive pure silver cable with copper shielding.
Universal & Custom
The Radon 6 is available as a universal IEM and a custom IEM.If you are interested in a custom Radon 6 made especially for you, please send us an email (info@audioessence.ch) or call us ( +41 77 403 35 26)
5-YEAR ANNIVERSARY
To celebrate FIR Audio's 5th anniversary, a new limited edition model with a completely new design and sound signature is being released.
KINETIC BASS
A hybrid conduction technology that takes the IEM sound experience to a whole new level. Kinetic Bass is bass you can feel.
ATOM VENTING
A pressure relief system that relieves the pressure that builds up in a closed ear canal. This greatly reduces listener fatigue, allowing you to hear more and listen longer.
OPEN ACOUSTICS
Open drivers without sound tubes that radiate the sound directly into the Sound Reactor, resulting in a much larger soundstage.
RIGID TECHNOLOGIES
Proprietary technologies that ensure industry-leading durability and ease of maintenance of our in-ear monitor products.
DRIVER SPECS
- 1x Kinetic Bass 10mm dynamic driver
- 2x OpenDriver Mid-BA drivers
- 1x OpenDriver High-Mid BA Driver
- 1x OpenDriver high-BA driver (with sound reflector)
- 1x OpenDriver Ultra-High electrostat driver
TECH SPECS
- Frequency range: 20-20kHz
- Impedance: 28 ohms
FEATURES
- Machined aluminum housing (UIEM)
- Front panels made of sapphire crystal glass (UIEM)
- Pure silver, oxygen-free, shielded black copper cable
- Gold-plated, symmetrical 4.4 mm termination
- ATOM XS Interchangeable Modules (UIEM)
- Internal ATOM and ATOM X modules (CIEM)
- Genuine leather protective case (UIEM)
We've applied everything we learned from the Frontier series and carefully retuned our popular 6-driver model to achieve a leaner, warmer sound signature. Equipped with proprietary technologies such as Kinetic Bass, ATOM Venting, Open Acoustics, and Rigid Technologies.
The Rn6 Universal-Fit model features an all-new black machined aluminum case, beautiful sapphire crystal glass covers, and a pure silver oxygen-free copper shielded cable designed and built exclusively for the Radon 6.
The Custom Fit model features all the premium design options of the Frontier series. The Rn6 CIEM also comes with the exclusive pure silver cable with copper shielding.
Universal & Custom
The Radon 6 is available as a universal IEM and a custom IEM.If you are interested in a custom Radon 6 made especially for you, please send us an email (info@audioessence.ch) or call us ( +41 77 403 35 26)
5-YEAR ANNIVERSARY
To celebrate FIR Audio's 5th anniversary, a new limited edition model with a completely new design and sound signature is being released.
KINETIC BASS
A hybrid conduction technology that takes the IEM sound experience to a whole new level. Kinetic Bass is bass you can feel.
ATOM VENTING
A pressure relief system that relieves the pressure that builds up in a closed ear canal. This greatly reduces listener fatigue, allowing you to hear more and listen longer.
OPEN ACOUSTICS
Open drivers without sound tubes that radiate the sound directly into the Sound Reactor, resulting in a much larger soundstage.
RIGID TECHNOLOGIES
Proprietary technologies that ensure industry-leading durability and ease of maintenance of our in-ear monitor products.
DRIVER SPECS
- 1x Kinetic Bass 10mm dynamic driver
- 2x OpenDriver Mid-BA drivers
- 1x OpenDriver High-Mid BA Driver
- 1x OpenDriver high-BA driver (with sound reflector)
- 1x OpenDriver Ultra-High electrostat driver
TECH SPECS
- Frequency range: 20-20kHz
- Impedance: 28 ohms
FEATURES
- Machined aluminum housing (UIEM)
- Front panels made of sapphire crystal glass (UIEM)
- Pure silver, oxygen-free, shielded black copper cable
- Gold-plated, symmetrical 4.4 mm termination
- ATOM XS Interchangeable Modules (UIEM)
- Internal ATOM and ATOM X modules (CIEM)
- Genuine leather protective case (UIEM)