RADIO CORPORATION OF AMERICA

Apparatus for recording, transmission, processing, and reproduction of sound; Apparatus for creating, retrieval, manipulation of sound, namely, audio mixers; feedback suppressors for manipulation of sound; audio enhancers and exciters for manipulation of sound; microphones; microphone preamplifiers; audio equipment, namely, direct input boxes for manipulation of sound; audio mixing consoles; dynamic audio signal processors; audio effects and audio signal processors exciters for manipulation of sound; sound equalizers; sound crossovers; electronic audio controllers; audio interfaces exciters for manipulation of sound; signal distribution devices, namely, amplifiers for audio and video signals; signal converters; headphone amplifiers; headphones; power amplifiers; loudspeakers