I was in a fraternity at college and all we used was 2 speakers (A) hooked into a stereo receiver (B) which we then ran a $5 audio cord (C) that hooked into our ipods. It was extremely loud, had sick bass, and handled parties of around 120 people with ease. Pretty sure some of the guys in my house bought them used off craigslist or something for under $100 and you should be able to find a used receiver for around $50. Simple as hooking up the speaker wires. let the keg stands ensue.