We are using FEDEX to deliver orders  within 4-8 business days. 


  • Call/Text: +61 45 1746 024
  • Email: hello@buildcircuit.net
  • Tutorials


This product will be shipped using FedEx (shipping cost per order: US$ 25). Delivery in 4-7 business days. Check out this page. 

If you want build a digital Bluetooth amplifier board, AudioB I2S Bluetooth audio receiver module can be a good choice for your project. This is a Bluetooth 4.2 stereo receiver module with I2S digital output and music re-sampling frequency is 48KHz. It is Apt-X supported.

It is based on CSRA64215. We have used breakout pins to 2x10 2mm space male pins. If you want a demo board, please buy our TSA7010 Digital Bluetooth Audio Receiver. It's a AudioB I2S module + DAC board.

The module PINs 7,8,9,10 are I2S output pins:

  • 7 - GND
  • 8 - BCK   I2S synchronous data clock, It's a 2.304MHz square wave signal.
  • 9 - SD     I2S synchronous data output.
  • 10 - LRCK   I2S word select, 48KHz. 1 - Left channel data, 0 - Right channel data.
  • Setting switch: We set to I2S in normal state. Set to SPI when you need to program the module.

Note: You need set the on board switch to SPI when you are programming the module. 



  1. Quick press S2 to switch to the previous song, long press to reduce the volume.
  2. Quick press S3 to switch to the next song, long press to increase the volume.
  3. Press S1 to play or pause.
  4. If there is audio output, MUTE pin will be high level, otherwise, will be low level. 


  • Bluetooth 4.2
  • I2S digital output
  • Sampling Rate: 48KHz
  • Bit per sample: 16 bit
  • Left Justified.
  • Justified Data 1 bit delay
  • Apt-X supported
  • Low power consumption: 5mA@5V
  • HFP V1.6
  • HSP V1.2
  • A2DP V1.2
  • AVRCP v1.4
  • Support for smartphone application(APPs)


  • 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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