You need an AVR that will do the # of channels you want:5.1, 5.2.2, 7.1, etc. And you'll want a sub (or two).
- What's your budget (per component or total)?
- How big is your space (l x w x h; sealed, or open to other spaces)?
- What are your bass expectations (decent bass / solid HT bass / earth-shaking, chest-slamming bass)?