Technical Pro 72-AMP1100 Integrated Amplifier with USB and SD Card Inputs iPod Compatible, 1100 Watts Peak Power, 200 Watts RMS Both Channels Driven at 1.0% THD at 8ohms Inputs: RCA (2 Audio Sources), USB, SD Card, MP3, Outputs: Push Button (2 Loudspeakers), RCS (Record Line Out) USB and SD Card Maximum Size: 16 GB, Plays .mp3 files from USB drives and SD cards Digital fluorescent output display, Bass, treble and balance controls, Frequency Response: 20Hz-20KHz Dimensions: Length: 7.75 inches, Width: 16.75 inches, Height: 2.5 inches