Wow! For the money this receiver is a great deal! I have it hooked up to a pair of Klipsch Heresy 2's and it rocks the house. I love the usb plug in, the two microphone jacks with bass, treble, echo and a seperate volume control to sing along with whatever your media source and the way it scans for radio stations when you set it up. Since the description is unclear it has outputs for 4 speakers, 2 rca inputs, 2 microphone jacks so two people can sing along with at the same time(this feature is disgustingly entertaining!) and a mp3 usb port. It also has a bass and treble adjustment for the main volume. The unit is sonically tight and crisp with amazingly no audio hum! I could not believe that it pulls all of the stations that my Sansui TU-717 pulls in on a similar antenna. The high volume internal cooling fan is definately efficient! The only thing missing is a preamp/amp split so that I could run a tube buffer or graphic eq but hey I really am thinking out of the price range of this unit! I bought this system for my son who was quite the doubter but after it was hooked up he was solid on the fact that his old man did his research. Anyway his smile tells the tale!