I went through the same exercise a few years ago w/ a 67SE.
I tried all the reasonably priced DACs Du jour(MSB,PS audio and the Bel Canto 1.0 ) I ended up w/ a used CAL Audio Alpha
and found the combo to be one of the most analog sounding setups I've ever heard. The Alpha is truly old technology
( 18 bit bitdac) but a winner when loaded w/ good NOS tubes
and resonably cheap here on Agon.
I tried all the reasonably priced DACs Du jour(MSB,PS audio and the Bel Canto 1.0 ) I ended up w/ a used CAL Audio Alpha
and found the combo to be one of the most analog sounding setups I've ever heard. The Alpha is truly old technology
( 18 bit bitdac) but a winner when loaded w/ good NOS tubes
and resonably cheap here on Agon.