dbx discs had to be played through playback software for the recording to play with the right dynamics. It was developed to compete with Dolby B on cassettes but it never really took off. When it was playing with the right playback level it could give startling results but many cassette player manufacturers would not take it up as they could not see the point in having two noise reduction programs. The one you have of the disc is even rarer because you had to buy a processor that went between your preamp and amp or in your tape loop and the processor would expand the compressed signal to give you pretty awesome realistic playback ( for the time ).
I remember visiting quite a few audio shows and being treated to "Pictures" quite a few times in a night.
I remember visiting quite a few audio shows and being treated to "Pictures" quite a few times in a night.