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This is a 4x100W audio amplifier board with a new AudioB plus Bluetooth module that supports Apt-X. It has integrated 2xST high performance TDA7498 which supports dual channel audio amplification.

Each channel is capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC 14V-39V* power supply. Power input port can be power jack or screw terminal. The DC input jack is 2.5mm with positive core polarity and if you use screw terminal, please pay attention to the polarity!

It has a smart cooling system, the fan does not work in normal condition
to eliminate noise. The fan only starts when the chip temperature exceeds 65°C. Once the temperature goes down, the fan stop running.

It is perfect for your Hi-Fi audio application, the audio source can be RCA input or Bluetooth. It is compatible with all the Bluetooth devices that support media audio, including iPhone, Android,etc. 

 

 

Note: We have tested it. It also works well with 12V DC power supply. But we suggest you to use DC 14V-39V power if possible. 

Specification:

Following table lists all typical data of the Amp board. For full specification, please refer to the data sheet of ST’s TDA7498 chip.

TA = 25 °C, fIN = 1 kHz sine wave, RL= 6Ω, VCC = 36V. (Unless otherwise stated)

Parameter

Condition

Min

Typ

Max

Supply Voltage (v)

-

14

36

40

Quiescent Current (mA)

FAN ON,STBY Disable

-

90

-

FAN ON,STBY Enable

-

50

-

FAN OFF,STBY Disable

-

40

 

FAN OFF,STBY Enable

 

10

 

Input Sensitivity (mV)

25.6dB

-

1356

-

31.6dB

696

35.1dB

460

37.6dB

341

Input Impedance (Kohm)

-

48

60

-

Gain (dB)

GAIN0 = L, GAIN1 = L

24.6

25.6

26.6

GAIN0 = L, GAIN1 = H

30.6

31.6

32.6

GAIN0 = H, GAIN1 = L

34.1

35.1

36.1

GAIN0 = H, GAIN1 = H

36.6

37.6

38.6

Output Power (W rms)

THD = 10%

-

100

-

Efficiency (%)

Both channels output rating power.

-

>90

-

Minimum Load (ohm)

-

-

6

-

Frequency Response (dB)

±3dB

20

-

22k

Operating Temperature (℃)

-

0

20

50

 

Features:

  • Size: 15.5cm x 11cm
  • Apt-X supported
  • Smart cooling system
  • Bluetooth 4.0
  • External mute control port
  • External Bluetooth/LINE IN control port
  • Working voltage: DC14V-39V
  • Over/under voltage protection
  • Over current protection
  • Over temperature protection 

Applications:

  • Personal computer
  • Background music system
  • Musical instrument amplifiers
  • Car audio 

Documents:

  • 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):

  • Economy Post (with NO tracking code): US $6.50 ~ AU $9.95
  • 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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