Inexpensive Tube Amps

have you considered Quicksilver? MiniMites or MidMonos used would be in that price range. Ive used quicksilver for years and they are incredibly awesome.

Be careful if considering PrimaLuna. Mine broke down three times in the first 10 months I had it. Never owned such an unreliable piece of hifi gear.

I have 2 friends that own Prima Luna. One has the high powered integrated and the other has 2 dialog mono blocks and a Dialog preamp and BOTH systems have been 100% reliable and they sound incredible. The friend with the mono blocks is using Vienna Acoustics speakers, some big floor standing speakers. The other person is running a pair of Vandersteen 3A signatures. I have listened to these systems with my friends, hours on end and musical, musical, musical they certainly are.

One more thing, if you are planning on getting an amp that is Made In China, you better do it now because there is a Trade War coming.  There are BIG tariffs going into effect for Chinese Made products so the prices are going to go up once the current inventory gets sold.  I am sure some unscruptilous dealers will jack the price up on their current inventory, just to get an extra buck or two so be casreful.

an example...

quicksilver minis $700, American made by hand

https://www.audiogon.com/listings/tube-quicksilver-mini-monos-2013-12-26-amplifiers-72058-greenbrier...

I personally would NEVER buy Chinese.....There are American options and reasonably priced. You buy Chinese and you always worry "will it stop working? will it burn the house down? Is it made out of lead?"