SM57 Mod: Modifying the Shure SM57 Microphone | Tape Op SM57 Mod: Modifying the Shure SM57 Microphone by Steve McAllister. Most internet chatter I take with a grain of salt, but when this mod came up on ProSoundWeb, I got interested. This in part was due to esteemed producer/engineer Terry Manning's comments and directions. Plus, I have a few 57s and am always looking for cool and different things. How to Repair a Shure SM58 | Our Pastimes How to Repair a Shure SM58 By Robert Russell ; Updated September 15, 2017. Cleaning the grill not only makes it more sanitary, it protects the wiring in the microphone as well. Scrub the grill with a toothbrush, and allow it to air dry. Scrub the foam diaphragm with a soft brush. Hold the microphone upside down to prevent moisture from SM57 - Dynamic Instrument Microphone A snare crack. An arpeggiated chord. A powerful saxophone solo. Whether on stage or in the studio, the notes that flow from your instrument connects your audience on a visceral level. And such sounds need a mic that can handle its strength. For every acoustic condition, the SM57 delivers the power of your playing to every fan in the house.