Abstract: A stereo audio headphone apparatus comprising a master headphone unit comprising a master housing, master circuitry comprising a stereo audio source and a wireless transmitter, a master audio output device for playing a first stereo audio channel, a master audio input device, and a first independently settable frequency equalizer for the first stereo audio channel carried by the master housing, and a slave headphone unit comprising a slave housing, slave circuitry comprising a wireless receiver, a slave audio output device for playing a second stereo audio channel, a slave audio input device, and a second independently settable frequency equalizer for the second stereo audio channel carried by the slave housing. The master and slave circuitries are operable in a pass-through mode with audio sensed by the master and slave audio input devices being delivered to the master and slave audio output devices via the first and second frequency equalizers.

Abstract: A stereo audio headphone apparatus comprising a master headphone unit comprising a master housing, master circuitry comprising a stereo audio source and a wireless transmitter, a master audio output device for playing a first stereo audio channel, a master audio input device, and a first independently settable frequency equalizer for the first stereo audio channel carried by said master housing, and a slave headphone unit comprising a slave housing, slave circuitry comprising a wireless receiver, a slave audio output device for playing a second stereo audio channel, a slave audio input device, and a second independently settable frequency equalizer for the second stereo audio channel carried by said slave housing. The master and slave circuitries are operable in a pass-through mode with audio sensed by said master and slave audio input devices being delivered to said master and slave audio output devices via said first and second frequency equalizers.

Abstract: A stereo audio headphone set may include a master headphone unit including a master housing to be independently carried behind an ear of the user, master circuitry including a stereo audio source and a wireless transmitter coupled thereto, and a master audio output device coupled to the master circuitry for playing a first stereo audio channel from the stereo audio source. A slave headphone unit may include a slave housing to be independently carried behind another ear of the user, slave circuitry including a wireless receiver cooperating with the wireless transmitter, and a slave audio output device coupled to the slave circuitry for playing a second stereo audio channel from the stereo audio source. First and second independently settable frequency equalizers may also be included for the first and second stereo audio channels to permit independent selection of frequency equalization to compensate for hearing loss.

Abstract: A stereo audio headphone set may include a master headphone unit including a master housing to be independently carried behind an ear of the user, master circuitry including a stereo audio source and a wireless transmitter coupled thereto, and a master audio output device coupled to the master circuitry for playing a first stereo audio channel from the stereo audio source. A slave headphone unit may include a slave housing to be independently carried behind another ear of the user, slave circuitry including a wireless receiver cooperating with the wireless transmitter, and a slave audio output device coupled to the slave circuitry for playing a second stereo audio channel from the stereo audio source. First and second independently settable frequency equalizers may also be included for the first and second stereo audio channels to permit independent selection of frequency equalization to compensate for hearing loss.