2 x 100W + 200W 2.1 Channels Bluetooth Audio Amplifier Board - TSA7500 TSA7499B It has an optical input

It has an optical input connector on the board which can accept the digital audio source of different sampling rates

One TSA3120B works standard alone:

and you don't want to use cable to connect with our amplifier board

iPhone/iPad users can search "Lazybone dimmer BLE" on App store and install that APP

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2 x 100W + 200W 2.1 Channels Bluetooth Audio Amplifier Board - TSA7500 TSA7499B It has an optical inputTSA7500 2x100W + 220W 2. 1 channels audio amplifier board with AudioB pro Bluetooth module. It has perfect class D architecture(Based on TPA3221) and 2 channels have 100W power output and another one channel has 200W power output. All the channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC12V 30V power supply. It can be used to drive any 4 or 8 passive speakers(Subwoofer channel need 2