Patrick D. Rockwell said...

"What are Dolby Headphones? Where can I get them?" I asked that guy in
Radio Shack, and he never heard of them. :-( He talked as if
there were no such thing,

It is processing technology not headphones, per se. Dolby says it works
with any stereo headphones.

http://www.dolby.com/dolbyheadphone/
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CQ