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2 x 50 Watt Class D Audio Amplifier Board w Bluetooth Ver4.0 - JAB2[640]

★★★★★(751 recommends)



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As a member of JAB(Audio Amplifier Boards designed for Jukecase) series, JAB2 offers the wireless solutions with Bluetooth module integrated and can be powered by lithium batteries directly. It is a stereo Class D audio amplifier board capable of delivering 30W @ 4 Ohm with a Texas Instruments TPA3116 chip to achieve high efficiency. Each channel is capable of delivering outputting nominal power simultaneously and continuously. The module dissipates only 0.72W with no signal when in ON mode (around 0.07W when in stand-by mode). Excellent heat dissipation eliminates the requirement of an extra heatsink and increases its reliability. Over current protection and over temperature protection are included to extend the longevity of the amplifier board. All these features make it a good choice for portable Bluetooth speakers.

Video for introduction of JAB2: video link

Video for introduction of Bluetooth control: video link

Video for connection with JAB3: 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
  • Supported Parallel Bridge Tied Load ModeYES
  • inputBluetooth, Single ended Line-in,
  • Power Voltage10V-24V
  • 3.6 x 2.7 Inches PCB Size
  • Bluetooth V4.0 APT-X +EDR, A2DP
  • Power Management Circuit
  • 3.5mm AUX Port
  • Volume Control Port (Potentiometer)
  • Power Switch Port
  • LED Status Indicators (Power, Battery Charging, Bluetooth)
  • Disconnection from Lithium Battery
  • Higher Output Power with Power Adapter
  • PBTL Configurable
  • Extension Board Supported (Coming soon)
Specifications typical @ +20℃, Powered by 19V DC, unless otherwise noted. Specifications subject to change without notice.
Parameter Conditions Min. Typ.  Max. Units
Power Supply Range - 12 19 24 VDC
Idle Power/Current SD short to GND, BT Disconnected - 37 50 mA
BT Connected - 42 55 mA
Standby Power/Current SD short to GND, only when low power module available - 2.9 5 mA
Battery Undervoltage Protection* - - 10.4 10.5 V
Constant Charging Voltage - - 12.3 12.7 V
Charge Current - - 0.5 1 A
Specifications typical @ +20℃,Powered by 19V DC, unless otherwise noted. Specifications subject to change without notice.
Parameter Conditions Min. Typ. Max. Units
Gain -     18 26 36 dB
Output Power19V @ 4Ω 2 x 50    W
THD @ 4Ω,10W, 1kHz - 0.02 - %
Output Noise Level A-weighting,Input Connected to GND       - 185 - µV
SNR 10W @ 4Ω, THD+N=1% - 92 - dB




23 May 2019

Is it already the newer version with external antenna?

Hi, Gábor. Thank you for your interest in our products. Yes, the external antenna together with 1pc power cable and 1pc speaker cable is in the package of JAB2-250. Please feel free to contact us if there is any problem.


26 Mar 2019

If we want to use a third party potentiometer what resistance should it be

Hi, Surya. The resistance should be 1k-10k, which depends on the noise floor. We recommend 1k. Wish it could help you.


28 Feb 2019

Does this come with volume pot and power cable? Can the Bluetooth name be programmed? Thanks Marc

Hi, Marc. The power cable is sent with the JAB2 package and the volume potentiometer is in the Functional Cables Package, which you can buy in the following link: http://store.sure-electronics.com/product/AA-JA11114 or http://store.sure-electronics.com/product/AA-JA11116. If you want to rename the Bluetooth, please contact us with store@sure-electronics.com. This new online shop is under construction now and it will be improved soon. Thank you for your support and sorry for the inconvenience brought to you.

Copyright 2019 @ Sure Electronics Co., Ltd.