Are There Any Good, High Power Solid State Amps?

I think there are many offerings, a lot of the solid state designs will have tube like character. There of course the old standbys Mark Levison, Pass Labs and higher end Krells. The KAV series just do not sound like a Krell to me. Another Brand I really liked if you can find it was Chord. Very silky and rich but also very expensive and not readily available in the US.

More Modestly priced offering I liked was BAT, Electoacompaniet, and the venerable McIntosh.

However the McIntosh amps I listened to are very neutral and may not have enough warmth for you. However they are not sterile and etched either. In my auditions I found that the BAT came the closest to sounding like a tube amp. Even so they are more laid back in the midrange and did not sound exactly like the tube gear I own.

Plinius.

Van Alstine

One of the items you may want to consider removing is the MIT power conditioner as ime with the newer Z-Stabilizer III HG, it provided some improvements but took away more than it gave. Further, since you're at $10K already you may want to consider a used pair of Ayre MX-Rs which will likely be a touch above your indicated budget.

I use Portal Paladin monoblocks with my Magneplanar 1.6s and love them. They output 200 at 8 and 400 at 4. They are cheaper than your budget at $3500 a pair.