Why tube in a dac ? I have had several Lampi dacs they are smooth but you loose resolution . A very good R2R dac has better resolution for a great example
I bought one, the Denafrips a terminator2
will give you Everythung you could want and more and it’s only $4700.
the terminator+ is slightly better but $6500 both are pretty much the same except for a few capacitirs , a rounded edge on the Terminstor+ and even tighter specs way beyond hearing . TheTerminstor2 ,and weighs 42 lbs and yes there are service centers in theUS now , which rare ,very dependable and built like a tank with all brand name quality parts.