Product Name: Digital audio amplifier board;Power amplifier chip: TPA3118D2 * 1;Input voltage: DC12-26V recommended DC24V;Power supply interface: DC socket (5.5 * 2.1);Input current:> 3A;Output power: 45W * 2; Output impedance: 4-8ohm;Input impedance: 1K;Signal to noise ratio: 100db;Magnification: 30TSP;Number of channels: two channels;Audio input: 3.5mm socket / xH2.54-3P;Size: 66 * 53MM Product parameters:Board power supply maximum range DC12-28V, recommended DC24V power supply. 12V power supply is the output power of20W per channel, 24V power supply is the output power up to 45W per channel. The new original IC chip with overvoltage protection, overcurrent protection, overheating protection, short circuit protection, audio output 5mm pitch 2P terminal, can be connected to double 30W speakers. Package included: 1PC TPA3118D2 Digital Amplifier Board Amplificador Dual Channel Audio Amplifier Board