Synergy is the key. I have the Allnic L-1500, Allnic H1201 phono and Allnic Puritas cartridge and find it way to bright with my Krell amps and B&W 801's. me too looking for a resonably priced amp that makes the Allnic sing rather than scream.
What cables are you using?
I've had 3 Krells and found network cables to work the best ie: MIT and Transparent. With the wrong cables, ie: Nordost, it bright and thin.
My last 2 Krells were FBP300 and FBP600 and LONG ago so maybe there are new cables that's a good match.
I know Agon member "Audiolabyrinth" finds Tara Labs a good match for his FBP700cx.