2 x 100W Class D Bluetooth Audio Amplifier Board - TSA7499B(Apt-X) TSA7800B If you only use one

If you only use one module

User can also change the DSP program to let the audio source selectable by an external switch

FL connector

S1+S2 - Long press 1s into TWS slave mode

2 x 100W Class D Bluetooth Audio Amplifier Board - TSA7499B(Apt-X) TSA7800B If you only use oneTSA7499B are designed for factory or DIY user. Bluetooth LINE IN select switch and audio input port are designed as JST connectors. So, user can install this amplifier board in a box and connect an external switch and RCA 3. 5mm audio jack plug to make their own audio amplifier. TSA7499B can also connect with our TSA1000 external audio volume control board. People can adjust the audio volume by rotating a real knob. TSA7499B is a 2x100W audio