Abstract: The Invention is a Wireless Headphone System (WHS), comprising an adapter that is configured for use with headphones having dual connections for cables with one on each headphone. The invention uses that configuration to support a cable with connectors at both ends of the cable that is at least long enough to connect around the user's head between the ear cups of the headphone. Further it incorporates Bluetooth or other wireless electronics and may have a microphone for a full duplex conversation as well as controls. The preferred embodiment comprises a generally symmetrical cable that balances the mass of the device(s) along its length, which can also be used to share media with an additional headphone set that is also plugged into the device.

Abstract: A system that alters the frequency and/or phase response to attenuate the signal to a first internal channel within a speaker box having two speakers so as to minimize interference with the second speaker when reproducing a mono signal (either left or right) in an interconnected stereo system.

Abstract: A posable strain relief for use with a cable which can he bent into a particular shape by the user, and which retains that shape, thus allowing modification to suit a specific environment or use.