I don't know how the Carys would behave, but in general it is a myth that tube amps should not be used with electrostatics. Tube amps have no problems with low impedances, in fact, some solid state amplifiers (you can see which when their specs don't say anything about 2 Ohms and 1 Ohm power) *could* go unstable with that load. The only "problem" with most tube amps would be a slight lowering of treble response because of their high output impedance. However, if you see Hi-Fi World's lab test of the CLX, it has a slight emphasis above 8kHz and a resulting "sheen" in their sound. This is perfect for a tube amp to compensate. I haven't listened to Summit Xs, but I expect their treble response to be similar because they use the same panel.
Martin Logan Summit X with Cary Audio 805ae
Does anyone have experience with using a pair of Cary Audio 805ae monoblocks to drive a pair of Martin Logan Summit X loudspeakers? I'm concerned this combination might not work that well given the low impedance values of the Summit X loudspeakers at higher frequencies.