Royer SM-21 Axemount Dual Microphone Mount for Shure SM57 & Royer R121 – New
New Royer AxeMount SM-21 57/R-121 Dual Microphone Mount. The Royer R-121 and Shure SM57 are the industry standard microphone combination for recording electric guitar cabinets. Dual Mount for the Shure SM57 & Royer R121 microphones.