Bluetooth Audio Amplifier Board with 2 x 100W + 200W 2.1 Channels – TSA7500


All the channels are capable of outputting nominal power simultaneously and continuously. Any DC12V-30V power supply can power this board. It can be used to drive any 4Ω or 8Ω passive speakers. TSA7500 can also be connected with our TSA1000, TSA1010, or TSA1020 external audio volume control board. People can adjust the audio volume by rotating the real knob.

Specifications:  typical @ +25℃, Powered by 30V DC unless otherwise noted. Specifications are subject to change without notice.

Bluetooth Audio Amplifier Board with 2 x 100W + 200W 2.1 Channels – TSA7500

TSA7500 2x100W + 220W 2.1 channels audio amplifier board with AudioB pro Bluetooth module. It has perfect class-D architecture(Based on TPA3221); two channels have 100W power output, and another channel has 200W power output.

It’s a 2.1 channels amplifier board. That channel for the subwoofer is 200W mono output. You can pair it with a mobile phone or a computer. Power the amplifier board. Use your phone or PC (etc.) to search for a new Bluetooth device. The module will appear as “TSA7500”. You don’t need a PIN, pair it, and then you can play music.

  • TSA7500 can auto 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.
  • An audio connector can connect with an external DSP to set the subwoofer audio tones.
  • BVC Port: BVC port can be connected with our Audio volume controller to control the Bluetooth audio volume.
  • Connect an external potentiometer to control the subwoofer volume separately.

Buttons control port:

  • There have three buttons on the board which can control the audio volume and play/pause. You can connect external buttons easily by using this button’s control port.
  • Pins define:(Check the board backside silkscreen):
  • P/P: Play the pause button
  • VOL+: volume increase and forward button
  • VOL-: volume decrease and rewind button
  • 1.8V

TSA7500 can auto 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.

TSA7500 + TSA1000, Both Aux-in and Bluetooth audio volume can be controlled through the BVC port


  • Size: 15cm x 9cm x 2.5cm
  • Bluetooth 4.0
  • Bluetooth audio volume control port(BVC)
  • Aux in/Line in auto detect
  • 2.1 channels
  • Working voltage: DC12V-30V
  • Over/under voltage protection
  • Over current protection
  • Over temperature protection


  • Personal computer
  • Background music system
  • Musical instrument amplifiers
  • Home DIY
  • Car Audio


  • How to change the BT name
  • How to enable BT password
  • How to change Bluetooth audio gains
  • TSA7500 Bluetooth module PSR file


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Founded in 2009, TinySine Electronics is a smart home and open source hardware provider, catering to hardware engineers, DIY enthusiasts and interactive designers. Our ever-growing product catalog includes over 700 components and widgets from sensors, robotic platforms, communication modules to smart home relay boards.

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The product link will be added to your question automatically upon submission.

    Could you please explain the "power output per channel" ratings? I'm not sure what "RL" means. Are each of those listings one of the channels? Why are 3 of them 10% THD and the other is 1%? Why does one say 10% at 3ohm and another says 1% at 3ohm? Thank you.
  1. 0 votes
    Q Could you please explain the "power output per channel" ratings? I'm not sure what "RL" means. Ar...... Read more
    Asked by Stephen
    Answered by Oz Robotics

    Hi Stephen, here is the AMP chip datasheet. - Thank you.

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