If you have a radio， MP3 or other stereo system attached to your car or motorbike， get great sound on the move with this hi-fi amplifier which is also a great option for connection to your home theatre or entertainment system. Features：1. MP3， iPod， CD player input jack2. 200W max power output3. 2.1CH， Low distortion4. Great for use on your vehicle or your home5. Smart， lightweight aluminium casing6. lightweight， allows for full control of your volume， treble and bass output. It also has a jack for plugging your MP3， MP4， iPod or CD player Specifications:1. R.M.S power:30-40W2. Jack input: 1/8" (standard stereo jack)3. Input: DC12V-18V 2A4. Material: lightweight aluminum5. Dimensions: 14 x 10.5 x 4cm (5.5 x 4 x 1.5")6. Input impedance: 47K7. Speaker Impedance: 4-8Ω8. Total harmonic distortion: <0.4%9. SNR: > 85dB10. Frequency response: 20Hz-20KHzNote: Power adapter is not included!Package included：1 x Hi-Fi Stereo Amplifier(Power adapter is not included)