Features 1、All aluminium alloy shell, to eliminate all kinds of electromagnetic interference. 2、High-power audio amplifier chip, 20W x 2 RMS power output. Low distortion. 3、RCA & 3.5mm audio input. Supports all kinds of audio input, such as mobile phones, DVD players, computers, MP3/MP4, etc. 4、Great for use on your vehicle or your home. Smart, lightweight aluminum casing. 5、Two pairs of speaker output clips, easy to wire. Allows for full control of volume, treble and bass output. Specification Description: If you have a radio, MP3 or other stereo system attached to your car or motorcycle, you can enjoy brilliant sound with this HiFi amplifier. It also has a jack for plugging your MP3, MP4, or CD player. Besides, this aluminum alloy power amplifier with low distortion with compact size is ideal for use on your carrier or at home. Features: All aluminium alloy shell, to eliminate all kinds of electromagnetic interference. High-power audio amplifier chip, 20W x 2 RMS power output. Low distortion. RCA & 3.5mm audio input. Supports all kinds of audio input, such as mobile phones, DVD players, computers, MP3/MP4, etc. Great for use on your vehicle or your home. Smart, lightweight aluminum casing. Two pairs of speaker output clips, easy to wire. Allows for full control of volume, treble and bass output. Specifications: Input impedance: 47Kohm Speaker impedance: 4 - 8 ohms Compatibility: Compatible with mobile phone, MP3, computer Volume control: Support Connection: Wired Interface: 3.5mm audio jack, RCA input port Material: Aluminum alloy Frequency: 20Hz-20KHz Distortion: <0.4% S / N: >80dB Frequency response: 20Hz ~ 20KHz Distortion: <0.1 (1KHz) Output power: RMS 20W x 2CH Input: DC 12-14.4V ≥2A Size: Approx. 15.4 * 9.5 * 3.9cm / 6.1 * 3.7 * 1.5inch Color: Silver Package weight: approx. 310g Package List: 1 x Power Amplifier 1 x User Manual