Maybe 15 years ago I had a customer that owned a restaurant that got it's music from an "audio pair". It was in the NI on the outside of the building along with his regular POTS and payphone lines and was wired with old quad just like all the rest. When I first clipped my buttset onto it I thought it was a non-working pair that was picking up a radio station. I figured it out when it dawned on me that the music inside sounded like what I had heard. Of course nobody told me, the old Greek who owned the place probably had no idea.
-Hal
