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JAB4 - 4 x 30 Watt Class D Audio Amplifier Board w ADAU1701 DSP & Bluetooth Ver5.0 for Audio 4.0/2.1/2.0 System[757]

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Functional Cables Kit for JAB3+ / JAB4 / JAB5



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




PC UI Control for JAB4

Step 1, Download the Miumax for JAB4, and install it.


Step 2, Install the USB driver. If you have installed it before, you can skip this step. If you don’t install it before, here is the link.


Step 3, Set SW1 on ICP5 at ② (REMOTE).

Step 4, Update the firmware of ICP5. Press the SW3 on ICP5 and hold on, meanwhile connect ICP5 to your PC with a USB Type-C cable. Then release SW3, and you can see the “RUN” LED on ICP5 blink, that means ICP5 enters Bootloader Mode. In this condition, it will show “Firmware Upgrade Mode” on the top left corner of the UI. Click “Update” icon on the Miumax for JAB4 and wait for upgrade completion. You can refer to “Online Upgrade” section of ICP5 User Guide.


Step 5, Disconnect ICP5 with your PC, and connect it with JAB4. After that, connect ICP5 to PC. It will show “JAB5 is connected” on the top left corner of the UI. If it doesn't show this prompt, please re-start the Miumax for JAB4. If there is no sound after connection, please turn up the input and output volume and reset the filter settings of each channel on Miumax. Then, you can adjust the parameters to your requirements.

Step 6, If you want to save your configurations to your ICP5 and run it without connection to PC, please click “Save all parameters to ICP5” icon. After the writing is done, re-power your JAB4.


JAB4 is a 4CH audio amplifier board integrated with Bluetooth 5.0 (supporting aptX HD) and ADAU1701 DSP, offering a real all-in-one audio solution for customers. Based on TI’s TPA3118 IC chip, JAB4 delivers 30W output power per channel into an 8Ohm load. Thanks to the equipped ADAU1701 DSP, JAB4 supports programming with SigmaStudio and PC UI control after connection with WONDOM ICP5, through which, you can adjust volume, gain, frequency and EQ setting to customize your own audio. In addition to 4.0 mode (4 x 30W), JAB4 supports configuration as 2.1 mode (2 x 30W + 1 x 60W), 2.0 / 0.2 mode (2 x 60W), applicable for various audio projects. Furthermore, JAB4 provides an I2S signal output, which can be transmitted to an I2S audio amplifier board. Wireless audio input, integrated ADAU1701 DSP, multiple output modes, high quality audio performance and battery power supported make JAB4 perfectly suitable for portable Bluetooth speakers, home audio, garden audio, digital crossover and DIY audio applications. A DC10V-26V power supply is required.

Demo Program for Reference: link

E2Prom Firmware for Program Restore: link

Integrated with Bluetooth 5.0 module

JAB4 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 JAB4 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 JAB4 is installed into a speaker or a cabinet.

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

JAB4 is also integrated with high performance ADAU1701 DSP chip for audio signal processing. Four ports for external potentiometers are mounted on JAB4. You can use the external potentiometers to control the gain and frequency even if JAB4 is installed in a speaker. Please refer to the datasheet or connection guide for the detailed functions of potentiometers. After connection with WONDOM ICP5, you can write a program with SigmaStudio, or get real-time remote control of your audio systems via PC UI, through which, you can adjust gain, volume, high/low-pass filter, EQ and other parameters.

Supporting Line Input

In addition to Bluetooth input, JAB4 supports 3.5mm line input. Signals from both 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 (AA-JA11117).

Supporting configuration as 4.0 / 2.1 / 2.0 / 0.2 Output Mode

JAB4 is an audio amplifier board featuring multiple output configurations. Each two channels can be configured as one channel with double power. Therefore, it can be used as 4.0 mode (4 x 30W), JAB4 supports configuration as 2.1 mode (2 x 30W + 1 x 60W), 2.0 / 0.2 mode (2 x 60W), suitable for diverse audio systems. In order to provide customers with easy operation, Sure Electronics employs automatic cables insertion identification, based on which, the switching among the output modes is so convenient that you just need to plug in the cables as required. The functions of the four external potentiometers would change accordingly. Please note, if you want to use JAB4 as 0.2 mode, frequency adjustment in the PC UI is essential besides hardware settings. 0.2 mode is not supported when using hardware control (Potentiometers).

Supporting Battery Power

Besides power supply, JAB4 supports battery power, which greatly improves the portability of the whole audio systems. You can enjoy the music in outdoor activities. It is recommended to use WONDOM BCPB series to power JAB4 since there is no charging circuit equipped in JAB4.

Signal Level Sensor System

JAB4 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 JAB4. You can disconnect with Bluetooth by one simple press, without worry about which Bluetooth is paired. Standby function is also available on JAB4. On-board and external LED indicators are offered to show the status of Bluetooth and signal, so you can have an overview of the running condition of JAB4.

Optional Accessories

We provide optional accessories for customers’ simple operation. Functional cables kit (AA-JA11117) offers all the cables you need for better use of JAB4. As for the detailed information, please refer to AA-JA11117.

Package Includes

1pc AA-JA33285

1pc Power Cable

2pc Speaker Cables

  • StyleBoards
  • Number Of Channel(s)4
  • 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 Voltage10V-26V
  • 3.6 x 2.7 Inches PCB Size
  • Integrated with Bluetooth 5.0
  • Integrated with ADAU1701 DSP
  • 4x30W / 2x30W+1x60W / 2 x 60W
  • Suitable for Audio 4.0 / 2.1 / 2.0 / 0.2 System
  • Bluetooth & Line Input Supported
  • I2S Signal Output
  • Bluetooth Pairing Cancellation
  • Four External Potentiometers
  • Supporting Programming & PC UI Control
  • Signal Level Sensor System
  • Power Management System
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 - - 4 - -
Minimum Load Impedance -   4 - Ω
Efficiency 4 x 30W@8Ohm, 1kHz - 87 - %
Nominal Power Requirement @24V, 1kHz - 140 - W
Operating Voltage @1kHz, 8Ohm 10 24 26 V
Idle Power Signal detected - 3.2 - W
No Signal detected - 1.2 - W
Switching Frequency SD Floating@24V - 400 - kHz
Power Consumption 1/4 of max output power@8Ohm, 24V, 1kHz - 31 - W
1/8 of max output power@8Ohm, 24V, 1kHz - 17 - 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 - 86 - mW
Parameter Conditions Min. Typ. Max. Units
Amp Gain @8Ohm, 20Hz - 20kHz - 26 - 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, 26dB   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%, 26dB, A-weighting   97   dB
THD+N 5W@8Ohm, 1kHz,26dB   0.03   %
10W@8Ohm, 1kHz, 26dB   0.06   %
Input Impedance -   10  
Supported Sampling Rates - - 48 - kHz
Output Noise Level A-weighting, Input Connected to GND, 26dB   153   uV
DC Offset -   10   mV
Crosstalk Separation 20Hz-20kHz, Gain=26dB - -60 - dB






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