Features of Car Amplifier 2 Channel: Out-Put Power :2X200Watts (Peak Music Power) RMS: 20W Input Impedance:47K Minimum THD :<0.05% Input Sensitivity:200mV Input Power:12V/1.5A-3A Speaker Impedance:4-16 Ohm Twin Big Power IC (BTL) Chips Frequency response:20Hz-20KHz Flash Rainbow color LED indication RCA Input X1 MP3 / ipod available(3.5mm Earphone jack) Tone Control with Treble/ Bass/ Balance and Volume Control Dimension:110mm (d) X 155mm (W) X 42mm (h) Weight of Car Amplifier 2 Channel: 270g Color:Red Aluminum alloy case good for sinking heat! The Amp can be also pluged in with ipod or other MP3! Package included: 1x Power amplifier ( Power adapter is not included. )