I have an AN-80 as well as a Concord DBA-10 and I'm working to get my AN-80 to work. I have a Roberts 1630 in the bedroom to get going with my Sony TA-N55 for the Philips GA 202 phono until I can repair the dead channel in my Pioneer SA-520. I also have Pioneer H-R100 (Dolby) and 99 (non-Dolby) and a few non-Dolbyized vintage cassette decks.
A 10dB improvement to a signal to noise ratio that could be in the upper 40s to mid 50s in some cases is a very welcome thing, although maybe not so bad in your gear but it's out there. That is precisely the reason Mr. Dolby created his system. David Blackmer (the DB of DBX) saw this as a half-measure when seeking the highest quality, noise-free audio and instead of mild compansion of selected frequencies he opted for a complete 1:1 action, using an ingenious thing called the voltage control amplifier and decilinear companding techniques that have been refined at least twice for DBX noise reduction as well as the audio for MTS stereo sound used in the final form of NTSC color television since 1983-84. DBX has since introduced a Type III and I think IV but those are under Harman International's ownership of the current Professional division. The original DBX died in 1989 under the ownership of the then-BSR and other parts of the company were sold, such as the interests to TV sound patents and others to THATcorp(?) a group of former DBX employees.
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Demand non-rolling scones
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