plan on using one of my reverb pedals on my vocals. was told i need an impedance transformer between my mic (SM58) and pedal (either RV5 or holy grail). want something reasonably cheap as its for minimal use to only serve this specific purpose only. trying to decide what would be best between the following: shure a95uf. mic plugs into a95uf. a95uf into pedal. clean and easy. or a similarly priced di box such as the behringer di400p, which i believe is supposed to do the same thing, though i'm not sure how the hookup would be in my situation: basically i already understand how the first choice works but if there's to be a noticeably better sound going something similar to the second option i'd go for that.