Feature: 1. 6 CHANNEL INPUT: Power amplifier board with 6 channel output, pure rear stage amplifier; input high sensitivity, can be directly connected to the computer sound card, decoder, DVD, HD player, can also upgrade most of the AV amplifier to connect, no noise, easy to use. 2. FINE CRAFTSMANSHIP: This power amplifier board to 4 pieces of TPA3116 as the core, ruby electrolytic coupling, low pass filtering with shielded inductors, film capacitors. 3. CIRCUIT CONTROL: TPA3116 digital power amplifier using switching circuit control, no popping sound on the power, can be connected to an external control switch, with external LED indicator interface. 4. EASY WIRING: TPA3116 digital sound power amplifier are used to pure brass, large hole terminal, wiring is convenient, safe and reliable connection. 5. SUPERIOR PERFORMANCE: TPA3116 digital power amplifier board using controlled STB standby, 0V standby mute, open circuit amplifier module work. Energy saving and power saving without heating. Specification: Item Type: TPA3116 Digital Power Amplifier Module Material: PCB Power Requirements: DC Power Supply 19-24V 10A, 24V Is Recommended Speaker Matching: 3-4R for Bass, 6-8R for Others Input Signal: Input Signal 1.4V, Adapt to Computer Sound Card, Decoder, DVD. Package List: 1 x TPA3116 Digital Power Amplifier Module3 x Connecting Cable Note: How to reduce background noise:A. With a potentiometer preamplifier board or amplifier board with copper wire to all the potentiometer metal shell connected and soldered to the signal input location on the ground.B. When installing the chassis to the amplifier board power supply ground to the chassis chassis.C. The sound signal input must use sound special three core shielded cable.