Avalon Eidolon Diamond and Tenor Audio OTL

While I think the Lamms are excellent amps (I own ML1.1s), the one you have is certainly no slouch and is quite highly regarded by many in these forums. What is it you don't like about it, and what are you really looking for?

Having owned the Tenors (great amps) I do not think they could deal well with the impedance of the Eidolon. More than anything OTLs will like a steady and ideally higer impedance.
I'm sure there will be better matches suggested.

If I may ask, what's wrong with the CAT? It should have enough grunt to drive those Eidolons pretty easily. The Tenor 75 is a nice piece, but with the Eidolons, I'd probably look at their 300-watt hybrids. The Lamm is a nice choice too.

The Tenor 75s cannot handle the load and drive the speakers well. If you want more than the JL2 can deliver consider either JL3s or Atma-Sphere MA-2s.
Brian

The Viola Symphony amp is superb, and would have no trouble driving your Avalons. Of course, it is all a matter of taste in the end.