Technical Pro H1502URI  Digital Hybrid 1500 Watt Amplifier/Preamp/Tuner with USB and SD Card Inputs - Black The H1502URI is a combined Amplifier / Pre-amplifier / Tuner built with the same quality design you would expect from Technical Pros superior technology. 1500 watts of peak power 7.2 channel up conversion this unit will exceed all expectations. 1500 watts peak power, Inputs: RCA (2 audio sources), USB, SD Card, MP3, Outputs: Banana binding post (4 speakers), push button (surround sound speakers), RCA (record line, preamp, 2 mono to subwoofer) and USB & SD Card maximum size: 32GB Records .wav files onto USB Flash Drive or SD Card from Tuner & RCA inputs, 128 kbps / 44.1 KHz sampling rate on .wav file recordings, Track title, track number & elapsed time will display for USB / SD Card inputs