@mozartfan I have a tube amp and it is a wonderful performer. I also have a class A amp and it is also blissful. My latest DAC - the Schiit Modius - is not a tube product, but it is transparent and the overall sound quality of my system is beyond anything I thought I would ever own. I may play with another DAC in the near future and I have looked at tube DACs, with a couple landing in my price range: the Black Ice products and the Musical Paradise products come to mind. Actually, the $499 model MP DAC is under redesign and will not be available until year-end, so that's not an option, right now.
Frankly, I have been blown away at every purchase from Schiit. I never dreamed their $799 Aegir would match so well with my Moabs. For people with lower a lower budget, companies like Schiit are a Godsend.