Bluetooth 4.2 Subwoofer Audio Board 2.1 Channel Power Amplificador

Brand new and high qualitySupport Bluetooth audio receptionWith pre-amp, bass frequency processing. with bass, left and right channel volume adjustment,treble adjustment, the master volume potentiometerUsing DC 12-24V power supply, maximum output power is: 50W(L)+50W(R)+100W(BASS)Core chip is TPA3116D2Operating voltage range: DC 11-25V (current 3-4A, or 19-24V/4-5A ,If the power requirements high, above20-24V/8-9A )Bluetooth receiving distance: more than the 8m(26ft)Speaker impedance: Left/Right Channel: 4-8 Ohm , BASS Channel: 2-8 OhmFunction Switch Instructions for use:1, Plug on the power on, the default is Bluetooth mode2, Bluetooth Disconnected status, Long press the switch can switch to the audio input mode3, Bluetooth Play status, Short press the switch for Pause/Play colour:blueMaterial:Metal + pcSize: 101 * 100 * 25mm / 3.98 * 3.94 * 0.98 inchPackage Contents:1*bluetooth amplifier board1*audio cable1*Knob setOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.