Shure Unidyne III Model 545 – 4-Pin
Shure Unidyne III Model 545SD – Here’s the legendary dynamic mic that paved the way for the iconic SM57, with the same R45 cartridge and classic styling that screams mid-century broadcast cool. This dual-impedance cardioid workhorse features a smooth top end, on/off switch with lock, and rugged zinc body that’s ready for stage, studio, or display. Tested and working, this example captures that unmistakable vintage Shure presence—warm, crisp, and clear. A favorite of guitarists, engineers, and collectors alike.
Here are two clean, working examples of the original Shure 545—part of the legendary Unidyne III family that laid the groundwork for the SM57. This early 4-pin cardioid dynamic mic delivers crisp, balanced tone with the classic R45 cartridge, die-cast body, and built-in shock mount. Includes original-style cable. Tested and sounding great, ready for studio use or vintage display. Asking $200 each.
