The AKG PZM6 D is a Pressure Zone Microphone. It is designed for professional recording, sound reinforcement and broadcasting. It has many applications, from miking full orchestras or individual musical instruments to security or teleconferencing. Each mic has a switchable dual frequency response: rising (R) or flat (F). The “rising” position adds brilliance. This makes it useful wherever a crisp attack is desired, such as on percussion, drums, or piano. The user can get a bright sound without boosting high frequencies on the recording console; the result is lower noise. The “flat” position provides a smooth, flat, high frequency response for natural sound reproduction. The PZM6 D has a smaller plate. Its low profile, unobtrusive appearance is appreciated in conference rooms, as well as on television, film and video productions. When suspended over an orchestra on a clear panel. Its miniature, permanently attached 15-foot cable also reduces visual clutter. The output of either mic is a male 3-pin XLR type, balanced and low impedance, which permits long cable runs without hum pickup or high-frequency loss. Like other Pressure Zone Microphones, the PZM6 D utilizes the Pressure Recording Process in which a miniature condenser microphone capsule is positioned very close to a sound-reflecting plate or boundary. The capsule is mounted in the “Pressure Zone” just above the boundary, a region where sound coming directly from the sound source combines in phase with sound reflected off the boundary.