Shure RK311 — Replacement Windscreen for SM81 Microphone
RK311 Overview
The Shure RK311 is a purpose-built replacement windscreen engineered specifically for use with the Shure SM81 condenser microphone. Designed to reduce unwanted breath and wind noise, it is an essential accessory for engineers working in live sound, broadcast, studio recording, and any environment where wind or proximity artifacts are a concern. Whether deployed on stage, in the field, or in a controlled recording environment, the RK311 helps maintain clean, uncolored signal capture from the SM81. It is a direct-fit replacement suited for touring engineers, system integrators, and studio professionals who rely on the SM81 as a primary instrument or overhead microphone.
The RK311 provides a straightforward, low-profile solution for protecting microphone performance without requiring additional hardware or modification.
Key Features
- Wind and Breath Noise Reduction — Attenuates unwanted breath and wind noise to preserve clean signal integrity during performance and recording
- SM81-Specific Fit — Engineered as a direct replacement for the Shure SM81 condenser microphone for secure, reliable fitment
- Replacement Accessory — Serves as an OEM-spec replacement, ensuring compatibility and consistent performance with the original microphone design
- Low-Profile Design — Maintains the SM81’s handling characteristics without adding significant bulk or altering microphone placement
- Broad Application Suitability — Appropriate for live sound, studio overhead recording, broadcast, and field recording environments

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