It'll be 75 watts push pull from 4x kt88, probably Sovtek. It's not unknown for John to build amps to this spec and for this price btw, as I know at least one other owner of the same amp with remote.
It's actually listening to that amp that got me back in to tubes in a big way. They are good, and as I said in my earlier post, his building skills are not in question as far as I'm concerned.
Bits:
Amps:
Avondale
Analogue:
Acoustic Signature Analogue 1 mkIII
Gold Note PH10
Digital:
Resolution Audio Opus21
Speakers:
AudioNote J