+1 ^^... It is apparent to me that McIntosh was trying to retain the tube warmth of their previous tube cousins, like the MC275 MC230 etc... I have played solid state amp Hybrids my whole life and liked the Mosvalve amps before I tried a Mac. They are a warm transistor amp also. A note about BK Butler, the founder of Mosvalve/Tube Works, he also makes high end audiophile amps like McIntosh's and seems to share the same sonic thinking surrounding his SS creations. I would love a tube Mac but damn, I know I would break it, they cost as much as a used car, and that extra aspect of Jerry tone comes from a SS power amp for sure. I have yet to hear a complaint out of a SS Mac user...except for their bulky/ heavy package. Good luck man, lots of archived talk about these amps. Don't think you have to have the tube amps to get good tone. A good preamp should be plenty of "Tube" warmth.