Recommendation for tube amp.

I have a pair of Quicksilver Mid Monos and they are great amps for the money.  The latest version has been improved with a number of upgrades, specifically independent bias adj for each tube and improved transformers to allow use of KT120 and KT150 tubes.   I drive mine with a c-j Classic 2SE and it's an awesome combination.   Have used speakers that are 87 dB sens , 90 dB , and 99 dB efficient with excellent results.   Rock solid reliable, you won't be sending it in if a tube fails like an ARC amp.

Get the new Dyna ST70! Great review in Stereophile! And the price is right!

I always recommend Jolida (or Black Ice as they're called now) as they're still an utterly underrated tube amp company, likely because they're much less expensive than many.

Check out the Rogue Audio Atlas-ll !
https://www.needledoctor.com/Rogue-Audio-Atlas-II-Power-Amp?quantity=1&custcol131=4

I heard a Carver Crimson 275 amp at the DC show and I thought it sounded very nice.  A dealer on Audiogon has it listed (for a new unit) at $2750.