Here's a Shure SM56 & 546 Unidyne III Dynamic Microphone from the 1970’s (2 Available at $275 Each)! The SM56 & 546 were the shock-mounted, professional versions of the Unidyne III SM57 and 545 with larger transformers and 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 & 545, these are the microphones for you. Both of these are in great shape with original serviced capsules. The SM56 had a section of the body replaced as the original was cracked. Grab one of these SM56 & 546 Unidyne III Dynamic Microphones from Shure!