The Warm Audio WA-47 is a large-diaphragm tube condenser microphone designed to provide the tonal characteristics of classic U47 microphones for vocalists, musicians, and recording engineers in home, project, and commercial recording studios. Thanks to nine polar patterns—cardioid, omnidirectional, figure-8, and six intermediate patterns—selectable from the included external power supply, its versatility allows it to excel at anything from close-up vocals to distant room sounds.
The K47-style capsule reproduction features dual gold-sputtered, 6-micron Mylar diaphragms with a single backplate. Tone-enhancing components, including a JJ 5751 vacuum tube, TAB-Funkenwerk (AMI) output transformer, and WIMA, Solen, and polystyrene capacitors, have been carefully selected to impart vintage-flavored tone characterized by a smooth, uncompressed high end and strong, warm low frequencies. Even the 7-pin cable, manufactured by Gotham Audio in Switzerland, rises to meet the demands of uncompromised audio production. It ensures the integrity of high frequencies and minimizes phase shift between the microphone and the power supply.
The WA-47 ships with a wood box and a shockmount, which reduces rumble and decouples it from problematic vibrations.
Custom Capsule
The WA-47 utilizes a custom reproduction of the vintage K47-style capsule that was used in the classic U47 microphone—designed with the same hole pattern and frequency response. Warm Audio's version of this capsule (model WA-47-B-80v) is carefully manufactured by an Australian capsule manufacturer whose precision and consistency allows sonic replication of the most important piece of this classic style of microphone.
