I have one of these, as well as several other microphones. The SM58 is a good all around mic - the reason it's an industry standard/go-to, but the Beta 58A is a better (in my opinion) vocal-specific mic...basically giving (again, in my opinion) a higher quality sound. The SM58 by comparison sounds muffled/muddy, where the Beta58A is clearer, stronger, and more articulate. If you're used to the SM58, then the Beta58A can sound thin and harsh, but, that is adjustable at the board - end result is that it's a tighter sounding mic with more clarity.