Here are two Shure SM56 Dynamic Microphones from the 1970’s (2 Available at $265 Each)! The SM56 was the shock-mounted, professional version of the Unidyne III SM57 with a larger transformer with variable low impedance settings. These are great dynamic microphones for snare, guitar amps, vocals, and more! If you’ve been looking for one of the best versions of the SM57, this is the microphone for you. These microphones have some wear to their body bodies but are working perfectly. Their threads were worn out and each will come with a new thread adapter permanently in place. Grab one of these SM56 Unidyne III Dynamic Microphones from Shure!