FIR Audio’s Frontier Series, especially Xenon 6 and Radon 6, has set the standard for high-performance IEMs for many enthusiasts over the past few years. But there’s another level to the Frontier Flagships that elevates them to truly TOTL status.
When it comes to custom IEMs, none are more hands-on than the hand-made creations of Tahsin Segvel. We kick of 2025 with a closer look at his third such project, aptly called Model 3.
