Warm Audio WA-47F

A Classic FET Reimagined for Today's Studios

The WA-47F follows the tradition of large-diaphragm FET microphones, appreciated for decades for their immediate transient response and ability to remain clear where others saturate or become muddy. On the original, this combination of speed, dynamics, and presence made it a highly sought-after choice in demanding professional environments, especially when capturing powerful sources without losing attack precision.

With the WA-47F, the goal is clear: to recapture this sound profile (wide dynamics, detail, impact) while benefiting from modern manufacturing and a selection of high-end components. Within the Warm Audio range, it positions itself as a characterful microphone, both robust and musical, designed to become a central tool in studio recording.

For Whom and What: Vocals, Kick Drum, Amps, and Demanding Recordings

Thanks to its cardioid polar pattern and FET design, the WA-47F excels on sources that require both attack and control. On a kick drum, it emphasizes punch and definition without collapsing under acoustic pressure. On vocals, it favors clarity and the reproduction of micro-dynamics, helping the performance stand out in a dense mix.

It is also very well suited to guitar and bass amps, brass instruments, percussion, and more broadly any situation where a microphone capable of handling high levels with exemplary precision and stability is needed. In cardioid mode, it facilitates source isolation and limits bleed, which is valuable for live studio or untreated booth recordings.

Features and Design Choices: Headroom and Fineness

A K47-Style Capsule and Detail-Oriented Electronics

The WA-47F is built around a gold large-diaphragm capsule with a K47 design, offering a rich and defined sound with natural presence and fine transient detail. This approach is reinforced by electronics selected for musicality and coherence: high-quality Fairchild transistors and Wima and polystyrene capacitors, common choices when aiming for a clean, stable, and nuanced signal.

TAB-Funkenwerk (AMI) USA Transformer: Depth and Authority

The TAB-Funkenwerk (AMI) USA output transformer contributes to the microphone's signature by providing a sense of density and solid foundation while maintaining good definition. Practically, this translates to tight lows, clear mids, and a useful sense of energy on percussive sources and vocals that need to stay upfront.

-10 dB Pad and 140 Hz High-Pass Filter: Adapting the Mic to Placement

The -10 dB pad increases headroom to fully exploit the microphone close to very loud sources without sacrificing attack. The 140 Hz high-pass filter is a direct ally against vibrations, proximity effect, and overwhelming low end: ideal for cleaning up an overly bass-heavy vocal, stabilizing an acoustic guitar recording, or securing a kick drum capture depending on placement.

Technical specifications