There are several wireless headphone setups on the market that use a "box" or receiver that is hooked up to the audio line outs on the back of your receiver much like say, a tape deck or graphic equalizer that should output
*any* signal you have selected without having to deal with switching the audio out cables between different outputs, say, dvd or cd or tv - you understand? Just about every a/v reciever has a "tape out" or general audio in/out option. Some even have a digital line input using either co-axle or optical connection or both. The headphones themselves are battery powered and receive the signal from the box receiver via line-of-sight.
I have this model:
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These are Pioneer's best wireless headphones and I highly recommend them although they are pricey. Because they are sold only in Japan, you'd need a small vol;tage converter for US wall outlets. I have a Pioneer VSX-59TXi receiver and these headphones work perfectly for late night listening when I don't want to wake the wife and kid.
Sony, Audio Technica and a few other companies make similar pairs running from around $100 all the way up to over $600 and many are sold here in the USA. To get an idea what's out there, type in eBay's search "wireless headphones."
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