There are a few Balanced phono stages out there. Since the Stereo Maraschino is a fully Balanced architecture it would make most sense to steer that way from the source no?
Oh. As I read closer I see that Tommy poses the question in terms of the Front input on STM. Hmmm that opens the playing field now being as the front input accepts regular single ended input. Being as the front input has a slight gain boost built in, it would probably play nicely with any of the best phono preamps as enjoyed by the most die hard vinyl purists