Audio Mirror Tubadour, Border Patrol Dac SEI, MHDT Orchid. These three dacs seem to be the go to tubed dacs in your price range. The Border Patrol only uses the tube in the power supply, the others in the out put stage. Preowned Lampizator Amber would also check a few boxes for you. Solid state, the field opens up but it would be hard for you to go wrong with one of the Schiit multibit dacs. Depending on the model, the Schiit could leave you with some extra cash to apply toward other parts of your system. Best wishes.
Tubes or not
Currenty I have a Wadia Di22 . I'm thinking of replacing it with a tube dac. I'm tube upstream . I'm afraid a tube DAC will bust the bank for the improvement I would hear. I don't want to replace it because it's not tube. I think I I can get a better non tube DAC for the price of a good tube DAC if you don't have an idea that is less than $1500 don't ask me about my equipment. That's a quick filter on multiple levels. I just want to squeeze as much as I can from the signal as I can for best price.98% of the other time vinyl is playong