Panasonic CQ-C3303U Flip-Down MP3/WMA/CD Receiver (50W X 4 max) CD player with built-in amplifier (18 watts RMS/50 peak x 4 channels) plays CDs, CD-Rs, and CD-RW discs (including discs loaded with your MP3 and WMA music files) SQ sound shaping (2-band equalizer and four preset sound curves "Rock," "Vocal," "Pop," and "Flat") auxiliary input