Car stereo additional functions rds radio data system usb player ipodusb connection ipod control function integrated features cd player radio usb player playback cd rrw audio formats mp3 receiver tuners mw lw amfm tuner feature eon enhanced other networks station memory 18 total output power 4 x 55 watt connections usb aux in subwoofer output pre amp out illuminated keypad multiple options available amplifier properties high pass filter low pass