Item Type: Power Amplifier Board <br>Material: PCB <br>Number of Channels: 3 Channels (Left Channel, Right Channel, Subwoofer Channel) <br>Input Voltage: DC 12~24V <br>Output Power: 50W+50W+100W (Left/Right Channel and Subwoofer Channel) <br>Output Load: 4-8Ω <br>Frequency Response Range: 14-100KHz <br>Signal to Noise Ratio: 100db <br>Switching Frequency: 1.2MHz1、Advanced Chip: Digital amplifier board uses the TPA3116D2 chip as its core, and is a high performance digital amplifier chip. <br>2、Rated Power: 2.1 channel power amplifier board provides 50 watts of power for the stereo channel and an additional 100 watts of power for the mono subwoofer channel.。 <br>3、Superior Performance: Digital power amplifier board with built in volume, subwoofer and satellite potentiometers for sound customisation. <br>4、Power Supply: Subwoofer amplifier board has a wide voltage supply from 12V to 24V DC and is designed for energy saving and high efficiency. <br>5、Wide Application: Amp board has a wide range of applications and can be used for multimedia sound systems, speaker projects, digital signage and even mobile sound.This amplifier board must be powered by a DC power supply (DC12?24V), preferably with a high performance switching power supply. Do not use a transformer!<p>1 x Power Amplifier Board&nbsp;</p><p>3 x Knob Cover&nbsp;</p><p>3 x Large Nut&nbsp;</p><p>3 x Spacer&nbsp;</p><p>4 x Small Nut&nbsp;</p><p>4 x Screw Post&nbsp;</p>