The Microtech Gefell WP21 is a dedicated wind and pop filter designed for use with the company’s Generation 4 and M 300 small-diaphragm microphone systems. Developed as a practical accessory for professional recording environments, it helps protect microphone capsules from unwanted wind and plosive noise while maintaining the natural sound quality these microphones are known for. Thanks to its specially engineered construction and additional internal flocking, the WP21 effectively reduces wind noise even in demanding outdoor recording situations. This makes it particularly useful for field recording, broadcast work, and live production where microphones are exposed to moving air. The design also helps suppress plosive sounds when microphones are used in close-talking applications, ensuring cleaner vocal recordings without compromising clarity. Compact and purpose-built for Gefell’s small-diaphragm microphone systems, the WP21 provides an easy way to improve recording reliability in both studio and open-air environments. By reducing wind interference and vocal plosives, it helps maintain consistent, professional sound quality across a wide range of recording scenarios.