This BerryBak BVS26B Bluetooth 5.0 amplifier module incorporates a Class F MIX3901 amplifier chip for output power at 2x6W under 4Ω and 2x3W under 8Ω. Audio signal input is via Bluetooth, and output on screw terminal for right and left channels. A small potentiometer controls the sound volume on the PCB, and a 5-pin connector lets you add a more elaborate external volume control module. A small button activates or deactivates the Bluetooth TWS (True Wireless stereo) function for an immersive, high-quality sound experience requiring two BerryBak BVS26B modules.

Power supply is provided by a TP4056 chip with a 26650 battery socket under the PCB. There's also a USB-C connector for DC 5V powering of the BVS26 amplifier module. A small switch also enables powering.

BVS26B module configuration examples

Single stereo configuration 1xBVS26

Using a single BerryBak BVS26B amplifier module, you'll obtain classic stereo sound with 2x6W @ 4 ohm power. Simply connect two small speakers to the module via its screw terminal outputs.

True Wireless Stereo (TWS) configurations 2xBVS26

To enjoy the TWS function, you'll need 2 BerryBak BVS26B modules. One will take care of the right channel, while the other will handle the left for increased power and more immersive sound. The TWS function makes it possible to broadcast true stereo sound wirelessly to several devices simultaneously. To use the TWS function, simply follow the steps below: 

• Switch on both amplifier modules. The blue LED on each card will flash, and you'll hear a sound to indicate successful power-up.
• Simultaneously press the TWS button on both BVS26B cards until you hear a different sound.
• Release your fingers from the TWS buttons after hearing the sound to activate TWS mode.
• If TWS mode activation is successful, the blue LED on one of the modules flashes, while the other remains lit.
• On your cell phone, open the Bluetooth settings and connect to one of the BVS26B cards. Play the file "LR1kHz 3 second.mp4 - 10 hours".
• Pay attention to the 1kHz sound and the left and right channels. You should be able to hear both channels clearly.