Sign up

Home /
Audio Amplifier Board /

2 x 50 Watt Class D Audio Amplifier Board with Audio DSP - JAB3-250 (for Gaming Kiosks)[705]

★★★★★(0 recommends)



Add To Cart
Buy Now


Buy 29 for $34.551 each and save 1%

Buy 58 for $34.202 each and save 2%

Buy 86 for $33.853 each and save 3%


Functional Cables Kit For The Connection Between JAB2 With JAB3 (JAB accessories)



L-style Aluminium Bracket (JAB accessories)



3S 18650 Lithium Battery Charger and Balance Protection Board - BCPB2




This board is a high performance 2 x 50W audio amplifier board with ADAU1701 DSP integrated, which can be used with WONDOM JAB2 to build audio 4.0 system with both DSP and Bluetooth. This JAB3-250 is suitable for boomcase, DIY, digital crossover and other applications. With WONDOM ICP series, it can be programmed via SigmaStuido. Customers can control the audio system through the four potentiometers on the JAB3-160 or through WONDOM APP - Miumax. It supports WONDOM battery board, greatly improving the flexibility.

Video for introduction of JAB3: video link

Video for connection with JAB2: video link

Video for reprogram through SigmaStudio: video link

Video for APP control instruction: video link

How to use Sigma DSP to make a signal generator within less than 3 minutes: video link

  • StyleBoards
  • Number Of Channel(s)2
  • Output Power50
  • Size3.6 x 2.7 inches (91.44mm x 68.58mm)
  • ChipsetTPA31xx
  • Heat DissipationHeat Sink
  • inputOthers,
  • Power Voltage12V-26V
  • 3.60 x 2.70 Inches PCB Size
  • Battery Board Supported*
  • Power Management Circuit
  • DSP Integrated
  • Gain of Speaker Output Adjustable
  • High-pass Filter of Speaker Output Adjustable
  • High-pass Filter of 3.5mm Headphone Output Adjustable
  • Overall Volume Adjustable
  • Signal Level Sensor System*
  • External 3.5mm AUX IN Port
  • Power Switch Port*
  • 3.5mm Headphone Output
  • Compatible with JAB2*
SpecifiSpecifications typical @+25℃, powered by 24V DC, unless otherwise noted. Specifications subject to change without notice.
Number of Channels--2--
Minimum Load Impedance-3.24-Ω
Efficiency2 x 50W@4Ohm, 1kHz-84-%
Nominal Power Requirement@24V, 1kHz-130-W
Operating Voltage@1kHz, 4Ohm122426V
Idle PowerSignal detected-2-W
No Signal detected-60-mW
Switching FrequencySD Floating@24V-400-kHz
Power Consumption1/4 of max output power@4Ohm, 24V, 1kHz-35-W
1/8 of max output power@4Ohm, 24V, 1kHz-20-W
 ControlStandby(Low = inputs enabled)High-level Input Voltage3.3--V
Low-level Input Voltage--0.8V
Mute(High = outputs enabled)High-level Output Voltage                                                         3.3  V
Low-level Output Voltage--0.8V
Standby PowerSD short to GND, only when low power module available-120-mW
Under Voltage Protection-10.010.410.8V
Specifications typical @+25℃, powered by 24V DC, unless otherwuse noted. Specifications subject to change without notice.
Amp Gain@4Ohm, 20Hz - 20kHz-26-dB
DSP GainSE1 (Single Amp)@4Ohm, 1kHz-60-0dB
SE2 (Headphone)@4Ohm, 1kHz-60-6.5dB
Input Sensitivity2 x 50W@4Ohm, 1kHz, 26dB 770 mV
Filter GainButterworth, Q= 0.707-4-dB
Cutoff FrequencyHFP0.25-2kHz
SNR2 x 50W@4Ohm, THD+N=1%, 26dB, A-weighting 88 dB
THD+N5W@4Ohm, 1kHz, 24dB 0.04 %
10W@4Ohm, 1kHz, 24dB 0.06 %
Input Impedance- 10 
Supported Sampling Rates--48-kHz
Output Noise LevelA-weighting, Input Connected to GND, 26dB 260 uV
DC Offset- 10 mV
Max output LevelJ3, 3.5mm Headphone Output Connector 7.8 dBu
Crosstalk Separation20Hz-20kHz, Gain=26dB--60-dB







30 Jul 2019

Hello, can I bridge this amplifier to make 1x100w, instead of 2x50w?

Hi, Lukas. We have released the 1 x 100W version of this JAB3 board in our online shop. The link is as follows: http://store.sure-electronics.com/product/AA-JA31181. Wish this could help you.

Copyright 2019 @ Sure Electronics Co., Ltd.