It is great to be able to copy your music onto an SD card for your phone or onto an MP3 player. You can take your entire music collection with you wherever you go. For DJs and bar owners, that handy little piece of storage is a Godsend. However, the sound quality you get out of plugging your memory stick or card into a stereo just won't cut it. You need to put the music through an amplifier before it gets out of the speakers. Sound behaves differently when it travels through the air out of speakers than it does when it is delivered to headphones along a wire. The high notes and deep base of your music travel as waves at different speeds and they react differently over distance and through obstacles, so you need to adjust the music through an equalizer. You need an integrated amplifier with an equalizer. Features: 1200 watts peak power Inputs: RCA (2 audio sources), USB, SD Card, AUX Outputs: Push Button (2 loudspeakers), RCA (Record Line Out) Dual 1/4'' mic inputs with volume and echo controls USB SD Card maximum size: 32GB Plays .mp3 files from USB drives and SD Cards iPod can play through USB input Record from the AUX / RCA inputs onto the USB or SD Card inputs Recordings onto the USB flash drive, SD Card will be .mp3 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 Bass, treble and balance controls Frequency Response: 20Hz-20KHz Dimensions (L x W x H): 19'' x 9'' x 2.2''