Ok, Should I be kind and say- Did you read the (expletive deleted) manual? One of them is a midrange boost that helps with intelligibility in voiceovers, and is good for some singers/songs. I find it's a big help on pop lead vocals. The other is a bass cut. This can be used on boomy acoustic guitars, a few vocalists. Some engineers will use bass cut to isolate snare mics and overheads to decrease mic bleed from kick and tom. There are other engineers who rarely use bass cut. I'd say be sparing with that, and know why you're using it. BTW- it rocks on snare and Djembe, but it's a frickin' big mic, that is hard to find space for in a kit. You have to trust the nice drummer...YMMV.-Richie
P.S., if you really do need a manual, go to Shure's home page and click on "products" The manual's available on line, and you can flip the switches with a small screwdriver. It comes with a plate, which is good for live use, that keeps the nice drummer away from the switches. Until he learns about screwdrivers.
And for all defensive percussionists, it's a joke-get over it.