Feature:
1. MULTIFUNCTIONAL: Subwoofer speaker amplifier board is with the pre amplification, bass divider processing. 2.1 amplifier with boot anti shock protection design, boot no burst sound.
2. SUPPORT FUNCTION: Bluetooth amplifier board with bass, left and right channel volume adjustment, treble adjustment, total volume potentiometer control.
3. HIGH POWER: Subwoofer amp is using DC 12?24V power supply, Maximum support 50W(Left CH) and 50W(Right CH) and 100W(BASS CH) three channel output.
4. POWER SAVING: Bluetooth amp has wide operating voltage, power saving design, the efficiency of up to 90% or more.
5. SATISFACTION SERVICE: If you have any problems, please contact us immediately. Makes sure the risk-free shopping for you, we will offer the best service to every customer. Enjoy your shopping.

Specification:
Item Type: Subwoofer Speaker Amplifier Board
Material: PCB
Core Chip: TPA3116D2
Operating Voltage Range: DC 9?25V (current 3?4A Or Higher, If More Power Is Needed, 19?24V 4?5A Or Higher Is Recommended)
Sound Input Sensitivity: 500?800mV
Frequency Response Range: 20Hz to 20KHz
Speaker Impedance: L R CH Speaker 3.5?8Ω
BASS Speaker: 2?8Ω
Maximum Output Power: 50W (L CH), 50W (R CH), 100W (BASS CH)
Size: Approx. 101x100x30mm/3.97x3.94x1.18in

Package List: 1 x Power Amplifier Board 4 x Screws 4 x Studs 1 x 3Pin Cable

Note: Please allow 1?3mm differs due to manual measurement.