+1 Lab 12 reference DAC (bought Mint 6 mo used $1800) with 1960 French Phillips (Mazda, RT, Dario Miniwatt) e188cc tubes is fantastic.
+1 Also have a Black Ice Audio DSD Glass DAC with 1950 Rca 12AX7 Blackplate It is really good and plays way above its price and doesn’t get a lot of attention. Bought 3 years back $650.