Car stereo additional functions rds radio data system usb player id3 tag beep tone support integrated features cd player radio usb player playback cd rrw audio formats mp3 receiver tuners mw lw amfm tuner features pty search programme types eon enhanced other networks rtp radio text plus station memory 18 total output power 4 x 50 watt connections usb aux in pre amp out illuminated keypad green amplifier properties mos fet amplifier source l