ITEM NAME:Dx-0408 18V 50W+50W 2.0 Channel Stk Thick Film Series Power Amplifier Board C7C8 Dx-0408 18V 50W+50W 2.0 Channel Stk Thick Film Series Power Amplifier Board C7C8 The board is enlarged with a classic thick film, with powerful power and good sound quality. It is an perfect choice for getting started, bookshelf computer speakers DIY and so on. Working Voltage: Double AC15-18V Output Power: 50*2W Op Amp Type: 4558 Frequency Response: 10HZ-20KHZ Weight: 193.4g Colour:green Material:PCB Size:13 * 10 * 6cm Package Contents: 1*Power amplifier board