Most of what Gthirteen says is right on the money.
However, I think you'd be fine with leaving center channel ss and just going tubes for front l+r. Most center channel sound is spoken dialogue, vs. music and sound effects out of the mains. I've read plenty of folks here using that combo w/o problems.
Your concern about current/tube life is not really the right way to think about it. Yes, some designs will have longer tube life than others, but it's a function of the entire circuit design and parts choice, not just a function of a current spec that you should base your decision on.
Trust your ears, and don't worry so much about the power ratings. If you tell folks what speakers you are driving, many will be able to offer their experiences driving them with both ss & tubes, and help you figure out what tube amps to consider. Then go listen to as many as you can, with some music that you know well. Cheers,
Spencer
However, I think you'd be fine with leaving center channel ss and just going tubes for front l+r. Most center channel sound is spoken dialogue, vs. music and sound effects out of the mains. I've read plenty of folks here using that combo w/o problems.
Your concern about current/tube life is not really the right way to think about it. Yes, some designs will have longer tube life than others, but it's a function of the entire circuit design and parts choice, not just a function of a current spec that you should base your decision on.
Trust your ears, and don't worry so much about the power ratings. If you tell folks what speakers you are driving, many will be able to offer their experiences driving them with both ss & tubes, and help you figure out what tube amps to consider. Then go listen to as many as you can, with some music that you know well. Cheers,
Spencer