RE: the Harbeths... I’m trying them with a "lowly" ATI AT6012 SS amp right now, which is specifically designed for my Linkwitz Orions. And... as you might have guessed (if you know Harbeths)... the AT6012 is making them sound very much like the YouTube videos I referenced - greater tranparency, and clarity, with more controlled bass and mids. Still have the great Harbeth rich mids, but with greater detail and clarity, and less boomy base. Though - I would note... I think the room treatments in those videos do a lot to achieve the sound you hear in those videos.
So... it would seem... you can achieve the great sound in those YouTube videos... IF... you find the right SS amp to drive and control the Harbeths. My AR150SE may ultimately produce much the same sound (after full burn-in)... we’ll see. But, if you don’t want to have to wait for the burn in of a tube amp - I think you’ll be surprised at the great sound they can produce with the right SS amps. I’m guessing, the Hegels, the ATI’s, and the McIntosh MA252 or MA352 can all do that - just so long as the amp has a very "neutral" sound and lots of current and damping to clear up the bass and mids.
And... I’m sure... the Maggies with the right amps can produce as impressive a sound. I’ve got the Peter Gunn modded Maggie 1.6 Magnestands, which have a superb sound also - may have a bit more clarity and soundstage than the Harbeths. Despite the fact the Magnestands have much better bass and dynamics than the stock Maggies - the Harbeths may still best them in those areas, which when added to the rich mids of the Harbeths, may give the edge to the Harbeths - close, hard to say.
So... it would seem... you can achieve the great sound in those YouTube videos... IF... you find the right SS amp to drive and control the Harbeths. My AR150SE may ultimately produce much the same sound (after full burn-in)... we’ll see. But, if you don’t want to have to wait for the burn in of a tube amp - I think you’ll be surprised at the great sound they can produce with the right SS amps. I’m guessing, the Hegels, the ATI’s, and the McIntosh MA252 or MA352 can all do that - just so long as the amp has a very "neutral" sound and lots of current and damping to clear up the bass and mids.
And... I’m sure... the Maggies with the right amps can produce as impressive a sound. I’ve got the Peter Gunn modded Maggie 1.6 Magnestands, which have a superb sound also - may have a bit more clarity and soundstage than the Harbeths. Despite the fact the Magnestands have much better bass and dynamics than the stock Maggies - the Harbeths may still best them in those areas, which when added to the rich mids of the Harbeths, may give the edge to the Harbeths - close, hard to say.