This may or not be helpful. When I decided to move away from a tube amp I decided to try the TRL D-225. It is listed at 225 watts but tests out closer to 275 watts. It is $4k new. They can make a monoblock version, but that may be over your budget. I have been very happy with my D-225 and paired it with a Joule Electra LA-100 MkIII and Cary SLP-98. It worked fine with both those tube preamps and my Spendor 1/2e speakers.
I'm somewhat intrigued by the Accuphase vintage gear, specifically the P-300 amp. They are available at very reasonable prices and can be brought up to spec by Accutech. One other option that caught my eye at RMAF was the Butler hybrid OTL amp. I think it is $3295 new, but I have seen them listed here for around $1600.
I'm somewhat intrigued by the Accuphase vintage gear, specifically the P-300 amp. They are available at very reasonable prices and can be brought up to spec by Accutech. One other option that caught my eye at RMAF was the Butler hybrid OTL amp. I think it is $3295 new, but I have seen them listed here for around $1600.