Hugos7,
since you mentioned it, I have also tried the Antileon Signatures (stereo) with the Eidolons. They were an excellent match with even more accurate bass than the Krells with the warmth of valves. I would certainly make the effort to consider or audition the Gryphons.
If you would like to email me, I could forward you some correspondence with Gryphon regarding compatibility with Avalons.
since you mentioned it, I have also tried the Antileon Signatures (stereo) with the Eidolons. They were an excellent match with even more accurate bass than the Krells with the warmth of valves. I would certainly make the effort to consider or audition the Gryphons.
If you would like to email me, I could forward you some correspondence with Gryphon regarding compatibility with Avalons.