You have more to be concerned with, in regards to what you are recording, with the SM7b. 60 db of gain recommendation, is typical, but you could record a loud singer, with the SM7, with 30 db of gain. It seems to come across in forums, that the fact that the mic has a lower output than say the SM57, means you need more gain at the preamp stage. Well, yeah, to some degree, but you are not recording your cat scratching itself, are you?
Yes, the UR should be more than capable of effectively giving needed gain for the SM7b, but it depends on what it is you are recording. Probably not the best mic for recording a butterfly’s wings flapping.
Sorry if that came across wrong, I just find it silly, that so many say that you need so much gain for the mic, yet never relate the needs, to the source…
And I would be curious to hear some butterfly wings. lol