[Sonion electrostatic tweeters+Knowles mid and treble BAs+10mm DLC dynamic driver] The EST driver can reproduce ultra-high frequencies above 15kHz; the proven Knowles BA drivers are full of nuances; the 10mm dynamic driver is rigid yet flexible, giving your music soul.
[Electrostatic on/off switch] We have added a switch that specifically turns on and off the electrostatic drivers, allowing the listener to instantly AB between having and not having the drivers.
[Industry Leader HeyGears, custom 3D printed shell] FiiO cooperated with HeyGears to create a shell that features both excellent comfort and durability, and the outer shell is made using the advanced DLP-3D printing method with printing accuracy down to 0.0375mm.
[S.Turbo acoustic design] The FX15 tribrid IEM features the patent S.Turbo acoustic design designed to maximize bass performance. A lengthened low-frequency sound tube at the heart of the S.Turbo design effectively filters high-frequencies produced by the dynamic driver.
[224 wires 8 strands cable included] The FX15 comes with a high-purity silver cable of 224 total wires separated into 8 strands of 28 wires each. Each wire is independently insulated and the cable features Litz braiding.