autut dual channel mini amplifier, hi-fi stereo reciever for cars motorcycles computer speakers, dc 12v-15v 40w autut <b>welcome to store of autut & enjoy your shopping</b> <br>1we are committed to providing you with good quality auto parts. <br>2contact the atutut service team when you encounter any product issue, we're willing to help you whole-heartedly within 48 hours. <br><br><b>product features</b> <br>1suitable for car, motorbike, boat or pc. <br>2small size, it's portable and can be installed anywhere. <br>3aux high fidelity audio frequency inputs, give you a perfect listening. <br>4well circuit designed,supplies high efficiency and high fidelity without noise. <br>5two main channel output, with treble,bass,and volume control,very easy to use. <br>6compatible with motorcycle, mp3, mp4, computer speaker and other audio applications. <br><br><b>product specifications</b> <br>outer material: aluminum alloy <br>chip: tda7056 <br>channel type: dual channel <br>power supply: dc 12v-15v / ≥2a <br>output power: 40w+40w <br>output impedance: 4ω~8ω <br>undistorted power: 25w=25w (dc12v/4ω) <br>input terminal: rca <br>frequency responce: 100hz~20khz <br>signal-to-noise ratio: 85 db <br>dimension: 14.7x9.5x4.1cm / 5.8"x3.7"x1.6" (l*w*h) <br>package content: 1 x car hi-fi stereo amplifier (no power cable included) <br><br><b>warm tips about refund & return:</b> <br>1please carry out the return and exchange process in the amazon help center or your order page. <br>2please refer to amazon's return and exchange policy for the progress of return and exchange. seller cannot interfere with the progress of the refund, please understand.