Ha, thanks Mike. I guess it's no longer 2017, huh? i think I need some new glasses as I've responded to a number of old threads this last year.
Appreciate your response! I suspected they might have their differences given the topologies. Going to start w/ a demo of the upgraded Formula and go from there...my pre and amps are tubed (Atma-Sphere MP1 and Audion Golden Dream monos) and I'm loving the SS Schiit Yggy in the front...wondered if the GG might be too much of a good thing with all those tubes, too (can you have too many?!?). I know they are both phenomenal DACs regardless, and thank you for your recommendations. Thanks again.