Gryphon Diablo 300 or Pass Labs Int-250 to Sonus faber Amati Tradition

Of your two choices, the Diablo 300 all day long. 

I suspect the two Amps really don’t sound that similar. The Gryphon is likely squeaky clean and accurate, and somewhat unforgiving of any shortcomings in the chain. The Pass Labs is likely creamy smooth with midrange being the star of the show for stellar vocal presentation, and not so brutally honest. The SF’s are soft in presentation so the choice is to sharpen the SF’s with the Gryphon, or further accentuate their softness with the Pass Labs. 

I almost bought the Pass Labs Int 250 but ended up getting the Gryphon Diablo 300 instead.  The Diablo 300 IMO is a much better integrated amp.

separates  

your welcome. thread closed.

unless your space constrained. Pass Labs. good cables and speaker wire. good source.

I have the 300 and it is not "squeaky clean" nor "unforgiving" nor "brutally honest" - it is simply neutral compared to the 250. SF is a good speaker brand to match with Gryphon overall, especially if you want to retain the easy-going SF sonic character while injecting some dynamic jump/authority.