[ Amplifier for wireless communications; Antennas for wireless communications apparatus; ] Apparatus for transmission of communication; Apparatus for wireless transmission of acoustic information; [ Audio amplifiers; Audio mixers; Audio processing equipment, namely, limiters and compressors; Communications headsets for use with communication radios, intercom systems, or other communications network transceivers; ] Devices for wireless radio transmission; [ Distribution amplifiers for audio and video signals; ] Electronic combiners for connecting antennas and receivers; [ Electronic products for the manipulation of the frequency, time, and amplitude characteristics of audio signals, namely, audio processors; ] Electronic transmitters and receivers for audio; Radio receivers; Radio receivers and monitors for reproduction of sound and signals; Radio receivers and radio signal tuners; Radio receivers and transmitters; Radio transmitters; Radio transmitters and receivers; Receivers for audio [ ; Software to control and improve audio equipment sound quality ]