Pl advise on Amp for listening to AOR on Klipsch RF7 Mk II via a custom built R2R NOS DAC

Actually in the radio biz, it was called Album Oriented Rock because one track could be 23 minutes such as Pink Floyd Echoes.

I don't want to criticize your speaker choice but have you seen this video?

@mr1398113 

The Paradigm Signature S8's are wonderful! I nearly bought a pair. They are 92db and +-2db@39hz but play down to 24hz. They could be a bit bright depending on the electronics and your room but with good electronics they're really nice.

I actually have a Black Ice Audio Fusion 22 for sale over on U.S. Audio Mart which would be fun to try with these speakers. That's how I ran across the GR Research video. It is not my desire to try to push equipment in the forum but the Klipsch were a potential speaker to match up with my F22.