Model: AK-280Brand: AUTSOMESize: 15.5*7.5*5CMRated voltage: 12VRated power: 40W*2Rated frequency: 20-20KHZResolution: 47KDistortion rate: 1.00%Signal to noise ratio: 90DBImpedance: 4-8Amplifier type: HIFI amplifierMaterial: aluminum alloyInterface Type: ClipReceiving method: signal inputChannel: 2.0 channelWeight: 0.3KGWhether to support APP: not supportedBe applicable: UniversalSize(LxWxH): 155mm/6.1inx75mm/2.95inx46mm/1.81inPacking list: 1*Amplifier 1*Instruction manual