TSA3120C is a 2x30W, 2-channel SPDIF+DSP digital amplifier board with an SPDIFBee receiver module. SPDIFBee converts the SPDIF signal to an I2S signal and outputs it to the ADAU1701 DSP chip. TSA3120C has a digital input, a closed-loop class-D amplifier chip, and a TSA5756M. Each channel has a maximum power output of 30W. Both channels can output nominal power simultaneously and continuously. Any DC12V-24V power supply can power this board. It can drive any 4Ω or 8Ω passive speakers.