for everyone talking about the EC445, DO NOT generalize your personal experience with one tube amp to all tube amps in general with all configurations, that's foolish for obvious reasons other than the fact that there is almost 1.8x difference in price so no more flaming for that amp in this thread please .
before drawing conclusions towards tube/SS amps you should try multiple REAL no-holds-barred amps(if cost really wasn't an object to them) from both SS/tube camps(either really costly DIY projects or REALLY costly current-manufacture amps like(from the top of my head) WAVAC or something) because as you know vacuum tubes are just the icing on the cake, if you want to pick the best parts you could get for your amp you could spend thousands upon thousands of dollars on capacitors alone, let alone transformers/resistors/hookup wire/sockets....etc. and at the very end come the actual tubes(one link in the chain).
note: tube tech+ dynamic/planar transducers work,beautifully at times, but I believe tubes belong to direct-drive electrostatics instead(where the real magic happens )
Can't speak for the '445' but I quite like my HE-6/tube monaural amps pairing, along with my Sansui solid state offering.