FiiO BTR7 Headphone Amp Bluetooth Receiver High Resolution Portable DAC Supports MQA/LDAC/aptX HD 384K/32Bit DSD256 for Phone/PC/Car/Home Audio

Amplifiers by FiiO. Details:. BTR7 bluetooth amplifier is with powerful battery —— 880mAh and you could continue to use it for 9 hours; 2. Wired+wireless charging support; 3. 3.5+4.4mm dual outputs; 4. High.