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2 x 30 Watt Class D Audio Amplifier Board w Bluetooth Ver5.0 & ADAU1701 DSP - JAB3+[760]

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2pcs 140x103x49mm Waterproof DIY Cabinet WDC140 Case For JAB1/ JAB2 / JAB3+



Functional Cables Kit for JAB3+ / JAB4 / JAB5



Bluetooth Pairing Name Programming (store@sure-electronics.com)




JAB3+ is an audio amplifier board integrated with Bluetooth 5.0 (supporting aptX HD) and ADAU1701 DSP, offering a real all-in-one audio solution for customers. JAB3+ covers 2 x 50W, 2 x 30W, 1 x 60W and 1 x 100W four models. Thanks to the equipped ADAU1701 DSP, JAB3+ supports programming with SigmaStudio, APP control and PC UI control after connection with WONDOM ICP5 or higher version(s), through which, you can adjust volume, gain, frequency and EQ setting to customize your own audio. In addition to speaker output, JAB3+ offers an extra mixed signal output, which can be input to other audio amplifier board to build audio 2.1 / 4.0 system. You can set it as stereo or mono with PC UI according to the connected amplifier board. Besides power supply, JAB3+ supports battery power, which greatly improves the portability. Wireless audio input, integrated ADAU1701 DSP, battery power, light weight and high quality audio performance make JAB3+ perfectly suitable for portable Bluetooth speakers, home audio, garden audio and DIY applications. A DC12V-26V power supply is required.

PC UI Miumax for JAB3+ download link: link

Demo program of Stereo JAB3+: link

Open-sourced firmware of Stereo JAB3+ for restore factory settings: link

How to program: link

Integrated with Bluetooth 5.0 module

JAB3+ employs Bluetooth 5.0 module for audio input, which supports various audio formats as aptX, aptX HD, aptX LL, SBC & AAC and high receive sensitivity with RF power up to 9dBm and -90dBm. There is a built-in antenna equipped on this board. So you can directly pair JAB3+ with the device to play music. An external antenna port is also provided on the board to ensure the stable connection and high audio performance in such applications that JAB3+ is installed into a speaker or a cabinet.

Integrated with ADAU1701 DSP, Supporting Programming with SigmaStudio, APP and PC UI control

JAB3+ is also integrated with high performance ADAU1701 DSP chip for audio signal processing. Four ports for external potentiometers are mounted on JAB3+. You can use the external potentiometers to control the volume, gain and frequency even if JAB3+ is installed in a speaker. After connection with WONDOM ICP5 or higher versions, you can write a program with SigmaStudio, or get real-time remote control of your audio systems via APP or PC UI, through which, you can adjust gain, volume, high/low-pass filter, EQ and other parameters. ICP5 is under test now and will be released soon.

Supporting Line Input

In addition to Bluetooth input, JAB3+ supports 3.5mm line input. Signals from the two input methods will be mixed before being transmitted to the amplification circuit. You can get the 3.5mm AUX-IN cable in the Functional cables kit for JAB3+ (AA-JA11117).

Supporting Battery Power

Beside power supply, JAB3+ supports battery power, which greatly improve the portability of the systems. Please note, since JAB3+ is not equipped with charging circuit, it is recommended to use WONDOM BCPB series battery boards, which are equipped with charging circuit, to power JAB3+.

Cascading with Other boards to Build Audio 2.1/4.0 systems

JAB3+ provides a line output signal. An extra audio amplifier is required to connect with speakers for playback as it is an audio signal output. The output mode of this line output signal (stereo or mono) can be configured by customers according to the connected board through SigmaStudio or APP. Therefore, you can build an audio 2.1 / 4.0 system to your requirements. Fully considering the easy control and audio performance of the built audio system, Sure Electronics prepares a synchronization port on JAB3+ to ensure the control logic of the two boards are consistent. It is suggested to cascade standard audio amplifier boards whose AMP chip is TPA311x with JAB3+ for better connection and sound quality.

High Expandability and Playability

After providing the analog and digital I/Os of JAB3+, there are still pins available on ADAU1701. We have extended 10pins as extension port. You can develop JAB3+ to build your unique applications with this port. As for the mapping of ADAU1701, please refer to the datasheet. Many customers are interested in I2S input and output, therefore we configure this port to be applicable to I2S input and output.

Signal Level Sensor System

JAB3+ employs signal level sensor system for lower power consumption and longer playback time. It will continuously monitor the input signal and there is a preset signal voltage threshold. When there is no signal (voltage is lower than the threshold) detected for 5min, the amplifier module will enter into standby mode automatically, in which condition, it will consume lower power. When there is signal detected, it will run immediately without any miss of the audio.

Easy for Integration

Bluetooth pairing cancellation function is integrated on JAB3+. You can disconnect with Bluetooth by one simple press, without worry about which Bluetooth is paired. Standby function is also available on JAB3+. Ports for External LED indicators are offered to show the status of Bluetooth and signal, so you can have an overview of the running condition of JAB3+.

Optional Accessories

We provide optional accessories for customers’ simple operation. With 3.6’’ x 2.7’’ L-style bracket (AA-JA11115), you can immobilize JAB3+ in connection and installation stage. Functional cables kit (AA-JA11117) offers all the cables you need for better use of JAB3+. As for the detailed information, please refer to AA-JA11117.

Package Includes

1pc AA-JA32474

1pc Power Cable

1pc Speaker Cable

Introduction Video: link

  • StyleBoards
  • Number Of Channel(s)2
  • Output Power30
  • Size3.6 x 2.7 inches (91.44mm x 68.58mm)
  • ChipsetTPA31xx
  • Heat DissipationNo Heat Sink & FAN
  • Supported Parallel Bridge Tied Load ModeYES
  • inputBluetooth, Single ended Line-in,
  • Power Voltage12V-26V
  • 3.60 x 2.70 Inches PCB Size
  • Battery Board Supported
  • Power Management Circuit
  • DSP & Bluetooth 5.0 Integrated
  • High Receive Sensitivity with RF power up to 9dBm and -90dBm
  • Supporting Various Audio Decode Formats as APTX, APTX HD, APTX-LL, SBC & AAC
  • Cascadable with Standard Amplifier Boards for Audio 4.0/2.1 System
  • Bluetooth Pairing Cancellation
  • External Control Potentiometers
  • Supporting ICP5 for PC UI control
Specifications typical @ +25℃, powered by 24V DC, unless otherwise noted. Specifications subject to change without notice.
Parameter Conditions Min. Typ. Max. Units
Number of Channels - - 2 - -
Minimum Load Impedance - 5.6 8 - Ω
Efficiency 2 x 30W@8Ohm, 1kHz - 88 - %
Nominal Power Requirement @24V, 1kHz - 68 - W
Operating Voltage @1kHz, 8Ohm 12 24 26 V
Idle Power Signal detected - 1.8 - W
No Signal detected - 105 - mW
Switching Frequency SD Floating@24V - 400 - kHz
Power Consumption 1/4 of max output power@8Ohm, 24V, 1kHz - 11.25 - W
1/8 of max output power@8Ohm, 24V, 1kHz -  10.8 - W
 Control Standby (Low = inputs enabled) High-level Input Voltage 3.3 - - V
Low-level Input Voltage - - 0.8 V
Mute (High = outputs enabled) High-level Output Voltage                                                         3.3     V
Low-level Output Voltage - - 0.8 V
Standby Power SD short to GND, only when low power module available - 100 - mW
Parameter Conditions Min. Typ. Max. Units
Amp Gain @8Ohm, 20Hz - 20kHz - 25.8 - dB
DSP Gain SE1 (Single Amp) @8Ohm, 1kHz -60 - 0 dB
SE2 (Line Output) @8Ohm, 1kHz -60 - 6.5 dB
Input Sensitivity 2 x 30W@8Ohm, 1kHz, 23.5dB   770   mV
Filter Gain Butterworth, Q= 0.707 - 4 - dB
Cutoff Frequency HFP 0.25 - 2 kHz
LFP - 20 - kHz
SNR 2 x 30W@8Ohm, THD+N=1%, 25.8dB, A-weighting   91   dB
THD+N 5W@8Ohm, 1kHz,25.8dB   0.037   %
10W@8Ohm, 1kHz, 25.8dB   0.039   %
Input Impedance -   10  
Supported Sampling Rates - - 48 - kHz
Output Noise Level A-weighting, Input Connected to GND, 25.8dB   163   uV
DC Offset -   10   mV
Max output Level J7, Line Output Connector   1.94   dBu
Crosstalk Separation 20Hz-20kHz, Gain=26dB - -60 - dB







10 May 2023

Hello, is it possible to program the outputs as one for tweeter and other for woofer with sigmastudio?

Hello. Yes. You can set one output for tweeter and another for woofer in SigmaStudio. Have a nice day~


27 Jul 2022

Hello, what's the matter with your support, somehow it's not working... I write mail, skype and no one answers. I have a problem with this amplifier. For a while after the purchase, everything worked, but one morning I turned it on as usual and it doesn't want to play at all, only bluetooth flashes, I connect but after a while the device disconnects by itself, if I want to change some settings via the programmer, it keeps giving me an error and it doesn't want to write nothing in ADAU1701.

Hi, Jozef. Sorry to hear that. We will ask our customer service department to check it. As for the problem you reflected, could you please kindly send us a video so that we can pinpoint the problem and solve it for you? You can send to store@sure-electronics.com. We will reply to you as soon as we receive it. Have a nice day~


20 Aug 2021

Hi. Does the Bluetooth chip support True Wireless Stereo? If yes, is it possible to send the signals coming from the analog input to the secondary device?

Hi, Pierfrancesco. Thank you for your interest in our products. The Bluetooth chip of our current products does not support TWS. We are developing products that support TWS now. Please stay tuned. Have a nice day~


13 May 2021

Does this board come with the Molex connectors for mains power and speakers?

Hi, Cody. Thank you for your interest in our products. Yes. There are Molex connectors on JAB3+ for power supply and speakers. A power cable and a speaker cable come with JAB3+. Wish this could help you.

Eduardo.Machuca Torres

14 Mar 2021

Do you ship to Mexico?

Hi, Eduardo. Thank you for your interest in our products. According to what we know, custom clearance is very strict in Mexico, especially for electrics products. Therefore, we could only provide ordinary air mail service. If you have requirements, please contact us with store@sure-electronics.com. Wish this could help you.

Copyright 2023 @ Sure Electronics Co., Ltd.