TSA1452B Bluetooth + DSP Audio Receiver Board TSA3117B TSA1702D is a SPDIF +

TSA1702D is a SPDIF + DSP audio receiver board with a TOSLINKBee receiver module

the Amplifier will output the Aux in/Line in audio

and coaxial inputs

If you want to select the RCA/SPDIF manually by a switch

TSA3111 comes with a new AudioB plus Bluetooth module that supports Apt-X

TSA1452B Bluetooth + DSP Audio Receiver Board TSA3117B TSA1702D is a SPDIF +TSA1452B is an enhanced Bluetooth + DSP board with an AudioB I2S v3 module that supports Apt X. It can be powered by a USB C cable or any DC9V 30V power supply. You can pair it with a mobile phone or a computer (etc). Power the board, use your phone or PC (etc) to search for a new Bluetooth device. The module will appear as "TSA1452B". You don't need a PIN, pair it and then you can play music. The TSA1452B is a complete audio digital signal processing