I would look for something:
newish but used
that self-biases so you won't have to mess with the tubes
that uses KT-88 output tubes with Klipsch
I've done the EL34 & EL84 route and I think the Heresy is a little bass-shy so the KT-88 would be my first choice for more robust bass.
For $700 you might want to even consider looking at a cheaper integrated that might use 34's or 84's and think about adding a small $300 sub into the mix. Just be sure the integrated has either a sub out or 2 outs.
newish but used
that self-biases so you won't have to mess with the tubes
that uses KT-88 output tubes with Klipsch
I've done the EL34 & EL84 route and I think the Heresy is a little bass-shy so the KT-88 would be my first choice for more robust bass.
For $700 you might want to even consider looking at a cheaper integrated that might use 34's or 84's and think about adding a small $300 sub into the mix. Just be sure the integrated has either a sub out or 2 outs.