2.1 Channels SPDIF Coaxial+DSP Amplifier Board - TSA7800C TSA9840 your smartphone will be able

your smartphone will be able to find a new Bluetooth device which name is "TSA7801B"

TS8675 is a cost effective

TSA7499B with TSA1000 exteranl volume control board

Not support this function on TSA1702D

2.1 Channels SPDIF Coaxial+DSP Amplifier Board - TSA7800C TSA9840 your smartphone will be ableTSA7800C 2x50W + 100W 2. 1 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. TSA7800C 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