4 x 50W SPDIF Coaxial+DSP Amplifier Board - TSA7804C TSA7500 There are 3 buttons on

There are 3 buttons on the board that can control the audio volume and play/pause ect

You can use it to work with our DSP amplifier board and build a multi-audio interface amplifier board

The external LED port can be connected a LED to indicate the battery power level

the blue LED will stay on

Only start when the board overheat

4 x 50W SPDIF Coaxial+DSP Amplifier Board - TSA7804C TSA7500 There are 3 buttons onTSA7804C 4 x 50W 4 channels SPDIF+DSP digital amplifier board with a SPDIFBee receiver module. SPDIFBee convert the SPDIF signal to I2S signal and output to the ADAU1701 DSP chip. TSA7804C is a very flexible DSP DAC Amplifier combination board. It has perfect class D structure (Based on TPA3116D2) and 2 channels have 50W power output and another one channel has 100W power output. All the channels are capable of outputting nominal power simultaneously