I would not limit to only two dedicated lines. The amplifiers, whether or not biamping for the front speakers might need 2 circuits alone. And with an HT setup, there are even more amplifiers to deal with. I would say at least two 30A circuits for any high current drawing amps and another two 20A for the remainder of amps and preamp/sources and one more for ancilliary electrical needs such as lights. It sounds like a lot, but now's the time to do it.
A member here, MikeLavigne, did a most impressive write-up on the work he went through to build a dedicated room. A big part of this was the electrical so he would be a very good source of hands-on experience as to what works and does not. And another member, AlbertPorter, has shared much of his experiences here on this topic.
A member here, MikeLavigne, did a most impressive write-up on the work he went through to build a dedicated room. A big part of this was the electrical so he would be a very good source of hands-on experience as to what works and does not. And another member, AlbertPorter, has shared much of his experiences here on this topic.