FiiO AIR LINK Portable High-Res Bluetooth Transmitter Colour:Black The Etymotic Tuning Kit was

The Etymotic Tuning Kit was derived from the desire for Etymotic users to modify the sound of their earphones

low-profile design won’t obscure the performer or environment

High-Mid Frequency BA Driver

with Sonion being a leader in the field

Output voltage at 1 kHz: 0

FiiO AIR LINK Portable High-Res Bluetooth Transmitter Colour:Black The Etymotic Tuning Kit was1 Year Local Warranty. One Press for Smooth Connection! The FiiO Air Link supports LDAC, aptX Adaptive 96kHz 24bit, and aptX Lossless, simply plug and play, allowing your mobile phone, computer, Switch and other devices to support lossless Bluetooth. Immerse yourself in a transformative experience for all your entertainment.