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Feature

Bluetooth 4.2 and stereo 3.5mm Audio input 2-In-1(Bluetooth input priority), Stream music from your cell phone to your speakers wirelessly.
2PCS NE5532 Op-amp, full in low frequency and distinct in gradation
Treble & Bass independent tone control
Can be powerd by notebook switching power supply and 12V-24V ordinary battery. It is very convenient to do as home and car amplifiers.

Description

Parameters:
Chip: TPA3116D2
Power supply: DC 12-25V
Interface: outer diameter 5.5MM inner diameter 2.1MM
Power: 50WX2 (tested under DC24V)
Board size: 72*88 mm / 2.83*3.46 in

Operational Notes:
Turn the knob to the far left and then connect DC power before turning on the power, This can avoid the impact of booting
First turn the volume knob to the lowest and then unplug the DC power, This can avoid the impact of shutdown
The indicator light is always on after power on and is not controlled by the switch

Package Includes:
1 Assembled Board