Dynamic cardioid mic.
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Mentioned in Kerry's first "Tech Tuesday" blog post on 2009/09/15 as part of a run-down of mics used to capture Mike's drum sound:

On the top of the Snare we are using 2 microphones: a Shure Sm57 (this microphone has been used on almost every rock record ever recorded), but we have found that with an AKG 414 EB placed by its side the snare has a bigger sound then usual and yet stays very true to the sound we hear in the room.

Also used to mic guitar amps, as seen in a KB Q&A video on 2009/09/28.