This rack-mountable hybrid preamp has a lot going for it. 2000 watts peak power 2 RCA inputs (one dedicated for phono input) two mic inputs and two outputs one dedicated for your power amplifier the other for a subwoofer. Theres an AM/FM radio with presets and a USB plug on the front so you can play all your favorite MP3 files from a memory stick. This package includes two wireless microphones - so its perfect for karaoke or any event where your voice needs to be heard. The preamp and subwoofer each have their own volume controls. The blue fluorescent display shows your input selection radio frequency and MP3 information. Hook up one or two sets of stereo speakers or pass the signal through your power amp for the ultimate sound.