hi Rob, i highly recommend Backert Labs Extreme or higher preamp which would definitely surpass Ref5se qualities and aid Gryphon top end to open up. BackertLabs pre have wide soundstage being airy and extended with silkyness without sounding brittle or sterile. It feels relax, natural and it's leading edge are not harsh or metallic sounding.
Both ARC & BLabs have excellent sound stage to make your speakers disappear but ARC sounds somewhat little bit dark "tone-down" or close-in comparing to Backert Labs pre. BL have that refreshing breath feeling like listening in wide open pasture..
Both ARC & BLabs have excellent sound stage to make your speakers disappear but ARC sounds somewhat little bit dark "tone-down" or close-in comparing to Backert Labs pre. BL have that refreshing breath feeling like listening in wide open pasture..