100% brand new and high qualityIf 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 systemHigh quality stereo sound ， both treble and bass outputAutomatic diagnosis work power source， can exchange or the direct-current supplyMP3， MP4 ， iPod or CD player input jackLow distortion， special-purpose biplate audio amplifier integrated circuit， timbre exquisite20W max power outputGreat for use on your vehicle or your homeSmart， lightweight aluminium casingAllows for full control of your volumeSpecification:Material: AluminumDC Input: 12V-18V 2AJack input: 1/8" (standard stereo jack)Voltage: 12VInput impedance: 47KSpeaker Impedance: 4-16��THD (Total harmonic distortion) RMS Power: <0.1% at 1KHZSin Radio: > 80dBFrequency response: 20Hz-20KHzSize: 12.6*14*3.9 cm / 4.96"*5.51"*1.54" (approx.)Note:Size for manual measurement， there may be a 0 to 1 cm error， belongs to the normal phenomenon.Due to the difference between different monitors， the picture may not reflect the actual color of the item. Thank you!Package includes:1 X Hi-Fi Stereo Amplifier