Here's a pair of Shure PE54D Unidyne III Dynamic Microphones from the 1970's! These are the exact same as a 545, with an added option of both low impedance or high impedance (selectable at the XLR). I have both of these set up for low impedance, ready for use! These will give you an extended top end over a modern day SM57 with a more natural depth overall. These are a great option on guitar amps, snare, and more! Grab this pair of PE54D Dynamic Microphones from Shure!