Paimei: Synergy is often a term used when someone applies a bandaid in a system to compensate for a flaw elsewhere. The importance of the amp/speaker interface is not so much about synergy but rather, compatibility.
And again, contrary to the comments of one amp to suit all speakers, it's just plain silly. For Sound Lab electrostatics, I don't want any other amp than the ones I own. If I was to change to high-efficiency horn speakers or a biamped system, I would surely choose an entirely different amp. But compared to so many of the "high powered" tube amps out there with their crappy little output transformers, I will stay with the "lower powered" CAT.
And again, contrary to the comments of one amp to suit all speakers, it's just plain silly. For Sound Lab electrostatics, I don't want any other amp than the ones I own. If I was to change to high-efficiency horn speakers or a biamped system, I would surely choose an entirely different amp. But compared to so many of the "high powered" tube amps out there with their crappy little output transformers, I will stay with the "lower powered" CAT.