FIR Audio Radon 6 CUSTOM FIT In-Ear Monitor - Discontinued add extension cable option Flagship best in ear monitors

Flagship best in ear monitors for pure classical music and symphony

aptX adaptive for High Quality Wireless Audio

Accessories: Vocal set eartips S/M/L

1 BA x Low-Mid

The semi-open design of the FD3/FD3 Pro based on FiiO's patented technology for balanced air pressure within brings several advantages

FIR Audio Radon 6 CUSTOM FIT In-Ear Monitor - Discontinued add extension cable option Flagship best in ear monitors(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. Weve 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,