Sony XM(TM) Radio-Ready CD/MP3 Player with TFT Display and CD/MD Changer Controls (CDX-M3DI) Automotive MP3-compatible CD player head unit with 23 watts per channel x 4 32,000-color TFT (thin-film transistor) LCD lets you customize your dash with pre-installed digital images and full-motion animation 30 station presets (18 FM, 12 AM) DSO soundstage organizer, EQ3 offers 1-touch, 3-band equalization 4-volt preamplifier outputs facilitate hookup with an optional, higher-powered amplifier