Name: Wireless Receiver Chip:for CSR8675+PCM5102A CSR8675 Support: APT-X APT-X LL ATPX HD 24BIT LDAC SNR :112db, direct output 2.1V RMS audio voltage ransmission distance:10m OP:NE5532 Compatible with 5532 OPA2132 OPA2134 AD827 AD712,you can change it by yourself DC Input (5.5X2.1): DC 12V Adapter (300MA or more). Type C Not Power Supply Input , is For Computer decoding RCA output, Can be connected to the amplifier 3.5mm Headphone output, Built-in Headphone amplifier can drive 300 ohm headphones colour:Silver Material:Plastic + Metal Package Contents: 1 x Board 1 x Metal case 1 x Bluetooth Antenna (Finished Item) Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.