Features： 1、Mini HiFi audio power-amplifier. 2、Made of fine quality material, has high durability. 3、Has 2 main channel output. 4、Supports C-D, PC and MP3 input. 5、Low distortion provides a clearer and stronger sound. Specification： Features: Mini HiFi audio power-amplifier. Made of fine quality material, has high durability. Has 2 main channel output. Supports C-D, PC and MP3 input.  Low distortion provides a clearer and stronger sound. Specifications: Material: Aluminium Alloy Type: 1# (Music Receiver), 2# (Music Receiver+Connection Cable), 3# (Music Receiver+Audio Cable) , 4# (Music Receiver+Connection Cable+Audio Cable) (Optional) Voltage: 12V-14.4V Power: 20W×2RMS Frequency: 20Hz~20kHz Signal DistortionRate: <0.4% Noise-Signal Ratio: >=75  Channel: 2CH Impedance: 4~8Ω   Hole Distance: 115mm / 4.53in Item Size: 125 * 73 * 42mm / 4.92 * 2.87 * 1.65in  Package Size: 130 * 106 * 48mm / 5.12 * 4.17 * 1.89in Package Weight: 240g / 8.46ounces  Note: 1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2.Please allow a little measuring deviation due to manual measurement. Package List: Type 1: 1 * Music Receiver Type 2: 1 * Music Receiver 1 * Connection Cable Type 3: 1 * Music Receiver 1 * Audio Cable Type 4: 1 * Music Receiver 1 * Connection Cable 1 * Audio Cable Package List： Type 1: 1 * Music Receiver Type 2: 1 * Music Receiver 1 * Connection Cable Type 3: 1 * Music Receiver 1 * Audio Cable Type 4: 1 * Music Receiver 1 * Connection Cable 1 * Audio Cable