Hello, I am really not informed about amplifiers. I listen to ambient, clasical, jazz, blues, soul, rock and metal music so I need some amplifier which is suitable for that. I will be playing music from my PC with 7.1 audio card with optical out, coaxial out and classic bannana connectors. Which is best for the purpose? I think it's optical.... don't ask me why I think that. So I want amplifier to have option to use that kind of transport. Also I will play DVD's on my PC so I need an amplifier capable of 5.1 6.1 or 7.1 system. Can anyone suggest me anything please? And also if anyone can suggest me the set of speakers to use. My room is 4meters x 2 meters.