Technical Pro 72-AMP1000 Integrated 1000-Watt Amplifier with USB and SD Inputs, Black (Discontinued by Manufacturer) 1000-Watts peak power, Inputs: RCA (2 audio sources), USB, SD Card, MP3, Outputs: Push Button (2 loudspeakers), RCA (Record Line Out) USB & SD Card maximum size: 32 GB, Plays .MP3, .wav, .wma files from USB drives and SD Cards, iPod can play through USB input Record from the MP3/RCA inputs, or Tuner onto the USB or SD Card inputs, Recordings onto the USB flash drive, SD Card will be .wav file format, Repeat/Random playback on USB/SD Card inputs Display screen will show track number and elapsed time on the USB/SD Card inputs, Digital fluorescent output display , Frequency Response: 20Hz-20KHz, Dimensions: 17 x 3 x 8 Inches