1. Support DSP adjustment: with 10 segments of high, medium and low EQ adjustment. 2. Support music playback:MP3 playback (optional). 3. Support wireless music. 4. Support AUX input. 5. Support optical input. Output power:50Wx4 Signal-to-noise ratio:Greater than 70dB Standard distortion:0.1% Standby current:5mA Voltage range:9-16V Maximum working current:15A 12V power 16Pin universal wire Support coaxial input. Support RCA output. Support Android host DSP APP linkage control. Support USB connectionPP Support wireless connection: wireless connection between mobile phone and car machine,APP (IOS/Android) control Support mobile APP customization function (optional). Suitable for all Android car navigation Colour:Black Material:Aluminum alloy Package Contents: 1 * Car Hifi Power Amplifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.