QCC3031 APTXHD Bluetooth 5.0 Lossless Hifi Audio Receiver Board with AUX Input For Home Amplifier Speaker Headphone DIY Kit

QCC3031 APTXHD Bluetooth 5.0 Lossless Hifi Audio Receiver Board with AUX Input For Home Amplifier Speaker Headphone DIY Kit   Product introduction: 1. No DC isolation power supply: suitable for lithium battery power supply, used to modify Bluetooth headset   2. With DC isolation power supply: suitable for refitting speakers, power amplifiers, and vehicles to add Bluetooth function to solve common ground current sound and noise   AUX audio input, Qualcomm 5.0, APTX/ ATPXHD （ Please make sure that your mobile phone, Bluetooth headset, Bluetooth speaker, and Bluetooth audio device support ATPXHD, otherwise this function cannot be used and it will be automatically downgraded to APTX.） , power on, the default volume is maximum   TI amp TPA6132A2, better sound quality   KCOM is the common end of the button, and the other end of the button is connected to VOL+, VOL-, PREV, NEXT, PLAY, and the button cord is within 5cm   Key Description: "VOL+": Short press to increase the volume, long press to increase the volume "VOL-": Short press to decrease the volume, long press to decrease the volume continuously "NEXT": short press a song "PREV": Short press the previous song "PLAY": Short press to play/pause, long press for 3 seconds to force enter pairing mode, long press for 6 seconds to clear the pairing list   Package Included: 1 x QCC3031 APTXHD Bluetooth 5.0 Lossless Hifi Audio Receiver Board