Model GZYJ1305 Quantity 1 Color Red Material FR4 Specification Working voltage: AC 12V; Maximum output power: Left / right 2 x 25W; Super bass: 1 x 50W; Output impedance: 4~8 ohm Features Adopts original LM1875 and new NE5532; Senior filter capacitor adopts 2 x 6800UF adopts 10A and above rectifier bridge to ensure the powerful and outpouring motive power; The resistor adopts five circles metal resistor main circuit adopts accuracy +/- 1% five circles metal resistor to ensure the good SNR; PCB adopts 1.6mm thickness dual faces board 2.0oz copper to ensure the high and low current through smoothly; High quality PCB Application Audio accessory English Manual/Spec Yes Packing List 1 x Amplifier module 3 x Screws 3 x Screw nuts 3 x Sheets 3 x Paper sheets