Agreed, IT coupling is excellent. Cap coupling can be nice, but to be done right IMHO requires use of an excellent cap (read: russian teflon or better), AND requires grid chokes on both driver and output tube, and a good plate-load choke on driver tube. That done, it's basically like IT coupling in may ways (all the iron) except for the galvanic isolation (and any ratio/impedance change of course) of the IT.
Top-shelf iron (trannies, chokes, et al) are a must, in any case.
-Ed
Top-shelf iron (trannies, chokes, et al) are a must, in any case.
-Ed