Model: AK-280 Brand: AUTSOME Size: 15.5*7.5*5CM Rated voltage: 12V Rated power: 40W*2 Rated frequency: 20-20KHZ Resolution: 47K Distortion rate: 1.00% Signal to noise ratio: 90DB Impedance: 4-8Ω Amplifier type: HIFI amplifier Material: aluminum alloy Interface Type: Clip Receiving method: signal input Channel: 2.0 channel Weight: 0.3KG Whether to support APP: not supported Be applicable: Universal Size(LxWxH): 155mm/6.1inx75mm/2.95inx46mm/1.81in Packing list: 1*Amplifier 1*Instruction manual