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  • Tutorials



TSA2300 is a 2x20W Stereo Bluetooth 5 multipoint audio amplifier board. It has the perfect class-D architecture (based on MAX98400A) and each channel has 20W power outputs.

Both channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC 10V-24V power supply. It can be used to drive two 8Ω passive speakers.

The highlight point is BT 5 integration. You can have many TSA2300 boards paired and worked together. TSA2300 can remember the pairing info. You don't need to pair them each time you turn on the amplifier board. This makes it possible to build a wireless surround sound system by using the TSA2300.

If you only use one TSA2300, it can work like a common Bluetooth amplifier board. Power up the amplifier board, double click PAIR button to set the board into pairing mode. Use your phone or PC to search for a new Bluetooth device. The module will appear as "TSA2300". You don't need a PIN, simply pair it up and then you can play music.

Pairing buttons:

  • PAIR - Double click to get into pairing mode.
  • TX - Click to get into transmitter mode.
  • RX - Click to get into the receiver mode.

External Pairing buttons Port:  Connect external buttons to control the PAIR/TX/RX.

Play, Volume control Port: Connect external buttons to control the music Play/Pause, Volume+, Volume-.


One board works like a normal Bluetooth amplifier



Multiple boards work together


How to Use:

Master board:

  1. Power up the TSA2300, Blue LED slow blink.
  2. Double click the PAIR button to set the TSA2300 into Pairing mode, Blue LED blinks fast. (Voice: Pairing)
  3. Now, your smartphone will be able to find a new Bluetooth device whose name is "TSA2300". Connect it.
  4. You can play music now. If you only use one amplifier board, you don't need do the following steps.
  5. Click the TX button, set the module to transmitter mode. (Voice: transmitter mode)

Slave board:

  1. Power up another TSA2300, blue LED blinks slowly.
  2. Make sure the master board is already working correctly and it is in transmitter mode. Click the RX button to set the slave board into the receiver mode. It will auto search the master board. (Voice: receiver mode, searching)
  3. Double click the TX button on the Master board. The master board will auto search (about 30 seconds) the slave board. Both the master and the slave board will be connected. (Voice: searching)
  4. The slave board will have music out now.
  5. If there is a new board looking to join as the slave board, just click RX on a new module and double click on the Master module.
  6. If a slave board wants to quit, click the TX button on that module.


Note: If you don't hear the voice prompt when clicking TX, please click the RX to switching the mode and then click TX again.



The following table lists all typical data of the Amp board. For full specification, please refer to the datasheet of the MAX98400A chip. TA = 25℃, fin = 1 kHz sine wave, RL = ∞, VVS = 18V. (Unless otherwise stated)







Supply Voltage (VDC)

Inferred from PSRR test


- 24
Current Limit   3.5A 5A -
Bandwidth @ ±3dB @8Ω 20Hz - 22KHz

PO = 2X20W, MAX98400A,
PVDD = 12V ,RL = 8Ω

- 90% -

Minimum Load Impedance




Switching Frequency


265KHZ 330KHZ 295KHZ
Gain   9dB 20.1dB 29.8dB

Input Sensitivity(RMS)


- 620mV -

Input Impedance

- - 22KΩ -

Output Power

Stereo,RL = 8Ω,THD+N 10%

- 22W -

Mono, RL = 4Ω,THD+N 10%

- 44W -


POUT=0.1W to POUT/2, fIN= 20Hz to 20kHz, RL= 8Ω




POUT/2, fIN=1kHz, RL= 8Ω






  • Size: 80*49*20mm
  • Multipoint connection
  • Bluetooth 5.0
  • Apt-X HD supported
  • Qualcomm cVc audio technology
  • Qualcomm TrueWireless Technology
  • Stereo receive
  • Effective transmission distance: 10-15m
  • Compatible with all Bluetooth devices that support media audio, including iPhone 



  • All the order are shipped within 2 business days. 
  • Products are either shipped from China or Australia. Item locations are mentioned on the product page.
  • Customers will receive tracking code if they have selected the 'shipping method with a tracking code'.
  • Returns are accepted if the customers return the items within 1 month to our address in Australia. If the item has been shipped from China, the customer still has to return the item to Australia. 
  • Return post fees have to be paid by customers. If the product is defective, we will pay the shipping fees.


Shipping fees for Australian addresses(Item Location: Australia):

  • Standard Post- using Australia Post: US $5.95 ~ AU $9.00 
  • Express Post: US $9.95 ~ AU $15.00


Shipping fees for international addresses (Item Location: Australia):

  • Standard Post with tracking code: US $17.50 ~ AU $26.50
  • Express Post with tracking code: US $36.50 ~ AU $55.00


Shipping fees for Australian and international addresses:(Item location: China):

  • Registered post with a tracking code: US $3.95 ~ AU $6.00 
  • Express Post with tracking code: US $25.00 ~ AU $38.00 


How long does it take to reach the USA, UK, Germany, Australia Canada and other EU countries?  

From China: If we ship from China, the delivery time can be from 7 working days to 15 working days. See the proof on the images below. US based orders are delivered more quickly than other countries.

Most of the USA, UK, Canada, Australia, and Germany  based orders are delivered within 7 days. However, because of customs related processes, it can sometimes take up to 15 days.  Check out all the shipment proof images on this page. 


From Australia: If you have chosen standard post, you will receive your parcel in 3-5 days (in Australia) and 5-7 days (outside Australia)

If you have chosen economy post, you will receive your parcel in 3-5 days (in Australia) and 15-25 days (outside Australia)


What is the proof that we really ship and they are delivered ?

 Check out all the shipment proof images on this page. 


Where do we ship from ? 

We ship our products from Australia and China depending upon what you purchase. BuildCircuit's original products are shipped from Australia. 

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