How much would a GFA-545 go for, reasonably?

Also, what about a mix of a tube pre and T-amp monoblocks (25-60 watts)?

Is Class-D and Tripaths amps the same thing? Maybe the warmth of the tubes and
the fast dynamics of the t-amps might provide some kind of balance?

Harley now you got me intrigued on class d. I just happen to read some articles on the emergence of Class D into more upscale companies.

Just thinking out loud online.