sE Electronics RF-X RB

The sE Electronics RF-X is an instant vocal booth for any home studio. Born from a desire to make professional-grade acoustic treatment accessible to every recording artist, the RF-X was conceived using the same design technology as the industry-standard Reflexion Filter PRO, answering the needs of the discerning recording artist working on a budget. Whether you're tracking vocals in a bedroom, cutting acoustic guitar in a spare room, or capturing drum overhead details in a less-than-ideal space, the RF-X delivers a level of acoustic control that was once only available in dedicated studio environments. It is a product built on proven principles, accessible craftsmanship, and thoughtful engineering — a tool that meets musicians where they are.

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How It Works

When you put a microphone in front of you, it doesn't just hear you — it hears the room around you. Even if it's a cardioid mic listening mostly to just you, it's still picking up reflections from your voice or instrument that are bouncing off the walls and coming back to the mic. The goal of the RF-X's multi-layered design is to minimize the pickup of such reflections so your primary sound source comes through as pure as possible. This is the fundamental challenge of recording outside a professional studio, and the RF-X addresses it directly, placing acoustic intelligence right behind your microphone.

Multi-Layer Technology

New materials have been developed to make the RF-X lighter than its predecessors while also maintaining its durability — helping to position it as a versatile product suited for any challenging working environment. It features a four-layer acoustic filter design comprised of the outer vented composite panel, a wool fabric layer, an air gap layer, and an inner acoustic foam layer. These layers work together to evenly filter frequencies across the whole spectrum, ensuring that recordings exhibit almost zero sound coloration when using the filter. This is a significant advantage over simpler acoustic solutions like foam panels or cardboard baffles, which tend to absorb certain frequencies while leaving others untreated. Some materials are good at absorbing or reflecting particular frequencies — for example, foam absorbs highs really well, but does nothing for lows. sE Reflexion Filters work evenly across the whole frequency spectrum.

Flexible Mounting and Hand-Made Quality

The RF-X mounting hardware provides full control over the distance and height of the microphone in relation to the filter for maximum flexibility. The added control means that your RF-X can be positioned perfectly to help provide a "dry" sound when recording any source — vocals, acoustic and electric guitars, amplifiers, drums, room mics, strings, and countless other instruments. Beyond its functional design, the RF-X carries the hallmark of sE's manufacturing standards: just like the RF Pro and RF SPACE, each RF-X is assembled by hand in the sE factory, with the highest attention to detail. It is also available in multiple finishes and is included in the X1 S Studio Bundle.

Why We Love This

Our gear experts love the RF-X RB because it solves one of home recording's biggest frustrations: unwanted room reflections ruining otherwise great takes. Its four-layer acoustic filter design ensures almost zero sound coloration, giving artists the clean, dry signal they need to mix with confidence. Each unit is hand-assembled in sE's own factory, so quality is never a compromise. As GRAMMY-winning producer Neal Cappellino put it, "this is exactly the kind of tool that, once you have it, you'll use it over and over!"

Top Ten Features

• Proven four-layer acoustic filter design (outer vented composite panel, wool fabric, air gap, and inner acoustic foam) 
• Multi-layer construction engineered for almost zero sound coloration 
• Built using the same design technology as the industry-standard Reflexion Filter PRO 
• Lightweight vented body for ease of use and portability 
• Efficient, redesigned clamp assembly for secure and flexible positioning 
• Full control over microphone distance and height relative to the filter 
• Hand-assembled in sE's own factory with the highest attention to detail
• Suitable for vocals, acoustic guitar, drums, amplifiers, strings, and more 
• Available in multiple finishes 
• Included in the X1 S Studio Bundle