Power amp Suggestions for Dunlavy SC-IV

I'm picking up a used pair of SC-IV for a mastering room in my home. Admittedly I'm from a Pro Audio and Recording studio background and am largely unaware of many of the obscure and esoteric audiophile brands and topologies. I was planning on powering them with a Bryston 4B initially, but started looking at used amps and was overwhelmed by the selection. Using the 4b as a point of reference what other amps would people recommend <$2k used.

Some that I have considered are the Krell KSA 250, Older Levinson ML3.
I even have an old set of Marantz Model 5 monoblocks in the storage room, though I suspect they are way too under powered for the Dulavy's.

Thanks and forgive my ignorance.

trin