This a great mic for many applications. It works effortlessly on Guitar amps and Snares as well as Acoustic Guitar...well just about everything really. It can even be great on Vocals (voice dependent of course).
It's built like a tank to the best quality, like every Shure mic i ever used.
As for extra features....its doesn't have any extras cos it doesnt them.
Simply put, there is a reason every studio in the world have multiple SM57's in their mic lockers!
If you don't have this mic, do yourself a favor and buy at least 1!
When I was looking to add a few more bog standard microphones to my recording setup the obvious choice is to go for a Sure sm57. Its a no frills but super well built and durable microphone. It is also a time tested industry standard for many applications whether it be a snare drum or guitar cab. So as I looked around for the cheapest price I found Thomann to be the go to place. I then realized that for ridiculously low additional cost that I could get a mic stand and XLR lead along with it as part of the bundle. Mic stand is well built and reliable, XLR is much the same.