The CAD Astatic 210 Surveillance Mic is a new commercial-grade omnidirectional, button-style model featuring adjustable line-level and an internal audio limiter. It is a miniature-boundary microphone ...
Astatic Microphone Laboratory, Inc. (of Youngstown, Ohio) was puzzled when Du Pont gave it orders, with a high Government priority, for numbers of sensitive phonograph pickups. Astatic Microphone was ...
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