The RF-PRO-BLK-U is the industry-standard portable acoustic treatment device for recording engineers, producers, and artists working in untreated rooms or needing additional isolation in professional studios. Since its 2006 invention, the Reflexion Filter has become the choice of top recording artists and engineers worldwide, relied upon for vocals, acoustic and electric guitars, amplifiers, drums, strings, brass, woodwinds, and room microphones.

Unlike imitation foam filters, sE Electronics' patented multi-layer technology works evenly across the entire frequency spectrum, ensuring balanced sound with zero coloration. This approach addresses the fundamental challenge of microphone recording: when a mic picks up a sound source, it simultaneously captures reflections bouncing off walls and surfaces. The RF-PRO-BLK-U's design minimizes those reflections, allowing your primary sound source to come through pure and dry.

The 2016 redesign upgraded the mounting hardware for increased stability, simplified operation, and improved durability. The panning and tilting mechanism allows precise positioning at any angle, while chromatized moving parts resist wear. Hand-made in sE's factory, each unit delivers the precision and reliability professional recording demands.