2 x 50W Bluetooth Stereo Audio Amplifier Board

TSA3118B is a 2x50W audio amplifier board with a new AudioB plus Bluetooth module that supports Apt-X. It has perfect class-D architecture(Based on TPA3116D2) and each channel has 50W power output. Both of channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC10V-24V power supply. It can be used to drive any 4Ω or 8Ω passive speakers. TSA3118B can also be connected with our TSA1000 external audio volume control board. People can adjust the audio volume by rotating the real knob.

The highlight point is to support Apt-X and TWS. Therefore, users can stream audio to 2 paired amplifier boards at the same time wirelessly. It's perfect for your Hi-Fi application. You may wish to pair with a mobile phone or a computer (etc). Power the amplifier board. Use your phone or PC (etc) to search for a new Bluetooth device. The module will appear as "TSA3118B". You don't need a PIN, pair it and then you can play music.

TSA3118B can automatically detect the Aux in/Line in Audio input. Bluetooth Audio source has a higher priority. When Bluetooth audio is paused or Bluetooth is disconnected, the amplifier will output the Aux in/Line in audio. If you want to manually select the Aux in/Line in and Bluetooth audio source, please choose TSA3116B or TSA3117B.
TWS mode supported. Users can stream audio to 2 paired amplifier boards at the same time wirelessly.
Multiple TSA3118B boards can be connected together to become a multi-channel amplifier system. The Audio out port can also be connected with a subwoofer amplifier board..
BVC Port: BVC port can connect with our Audio volume controller to control the Bluetooth audio volume.

TSA3118B can automatically detect the Aux in/Line in Audio input. Bluetooth Audio source has a higher priority. When Bluetooth audio is paused or Bluetooth is disconnected, the Amplifier will output the TV audio.

TSA3118B + TSA1000, Both RCA input and Bluetooth audio volume can be controlled through BVC port

Multiple TSA3118 boards can be connected together to become a multi-channel amplifier system. The Audio out port can also be connected with a subwoofer amplifier board.

2 boards work in TWS mode

*User must remove the slave board Aux in Enable jumper before pairing 2 boards

S1 - Long press 3s into pairing mode. Long press 6s clear the pairing info.
S1+S2 - Long press 1s into TWS slave mode.
S1+S3 - Long press 1s into TWS master mode.
S2+S3 - Long press 1s disconnect TWS connection.

Specification:

Specifications typical @ +25℃, Powered by 21V DC, unless otherwise noted. Specifications subject to change without notice.

Parameter	Condition	Min	Typ	Max
Supply Voltage (VDC)	-	10	21	24
Idle Power	SD Floating	-	1.3W	2.5W
Standby Power	SD Connected to GND	-	0.1W	0.3W
Maximum Current	100W @ 4Ohm	-	5.29A	-
Efficiency	50W @ 4Ohm	87%	-	92%
Minimum Load Impedance		3.2Ω
Switching Frequency	SD Floating	-	394KHZ	-
Gain		24dB	25dB	26dB
Input Sensitivity(RMS)	@4Ω, 50W, 1KHz	-	808mV	-
Input Impedance	-	-	22KΩ	-
Output Power	@4Ω THD+N 1%	-	36W	-
Output Power	@4Ω THD+N 10%	-	50W	-
Bandwidth @ ±3dB	@4Ω	20Hz	-	20KHz
THD	@4Ω, 1W, 1KHz	-	0.0299%	-
THD	@4Ω, 10W, 1KHz	-	0.073%	-