100% brand new and high qualityLeft and right channel full-range output， Can drive a 3-16 ohm speakers In the condition of rated voltage 24V，a very wide range.The subwoofer channel at rated voltage 24V state can drive 2-16 ohm subwoofer， uniqueindependently adjustable subwoofer gainOperating voltage: 12V-25V (recommended to use high-quality switching power supply)Power output: 100W subwoofer left and right channel 50Wx2\This is assembled Board and tested well.with three aluminum alloy knob.Panel in the middle of the gap can be used to hold the terminal.This board is very suitable for household and car amplifierWith expensive red ring inductance， not the small power TPA3116 can be comparedExcluding external power supply， you can use the notebook powerBoard Size:(L*W*H)10.00*8.38*0.19cm/3.94"*3.30"*0.07"Quantity:1Pc