Entry level tube integrated for bedroom/office

Oh, and I was very happy with a Cayin A-50T EL-34 powered integrated that was my primary amp for awhile. With upgraded Gold Lion KT-77s replacing the EL34s it was very impressive. It or any of the Cayin models come up for sale used fairly often and are a great bargain. I sold mine for $750. They’re made in the same factory as the Prima Luna amps, of similar quality but at lower prices because they are not marketed as heavily.
https://www.stereophile.com/integratedamps/308cay/index.html

If you are ready to buy now, Morrow Audio has one remaining  Jolida FX-10 available in their Jolida liquidation sale. I'm not going to list the price here, but I will say it is price at 40% off of MSRP for a brand new unit.  

with your speakers in a bedroom system you could look at Decware  you arent going to rock out but the sound is magical

Jolida Fusion 3502P. Underwood HiFi has a nice special going on these (both EL34 and 6550 versions) right now — the EL34 is right at your budget and the 6550 is slightly over. I am not affiliated with the vendor, but had a good experience buying from them in the past.