"CSR8645 APTX. DC Model:CSR8645. 1X Bluetooth 4.0 CSR8645 Amplifier Board 5W+5W APT-X Stereo Receiver Amp Module. Power:5w+5w DIY. Power amplifier board size: 5.7x3.3CM. QCC3031/3034 Bluetooth 5.0 Lossless APTXHD Pair Box TWS Headphone Amplifier HIFI.
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