The RF-X is a compact reflection filter built on the proven four-layer acoustic technology of sE's flagship Reflexion Filter PRO, engineered for recording artists and engineers who need professional-grade room isolation without the size or cost of full-booth solutions. Its multi-layered design—comprising vented composite outer panel, wool fabric, air gap, and acoustic foam—evenly filters across the entire frequency spectrum, delivering nearly coloration-free recordings whether you're capturing vocals, acoustic instruments, drums, or amplifier sources.

Each unit is hand-assembled in sE's factory with the same attention to detail applied to their microphone manufacturing. The redesigned clamp assembly and lightweight construction make it suitable for permanent studio installation, touring applications, or temporary live setups. Adjustable mounting hardware provides full control over microphone positioning relative to the filter, enabling optimal distance and height for any source material.

Unlike single-material solutions such as foam or cardboard, the RF-X's multi-frequency approach addresses both high and low-end reflections uniformly, making it effective across diverse recording scenarios and microphone types.