Complete Dolby CAT 43 Single Ended Noise Reduction System including CAT 43A Threshold and Level Control unit, CAT 43B Interface card and cable, CAT 22 card, Dolby 361 interface, and user manual. This is a playback only system, used for reducing ambient noise such as hiss, hum, oscillation, and ambient noise from recorded material. The four sliders on the control box adjust the amount of signal processing in each of the 4 bands (30-80 Hz, 80 Hz - 1K, 1-3 kHz, and 3 Khz and up).
Working examples of these units are very hard to find.
Please note that this system can also be used for normal Dolby Type A encoding and playback. Just plug the CAT 22 card into the 316 unit without the Cat 43 items, and you'll have a standard pro type Dolby NR system for encode or decode.
The system has been fully tested and works well. All elements are in very good electronic condition, though there's some cosmetic wear. The blue lens is missing from the Normal button but the switch and function operate correctly. Includes a copy of the original Dolby user guide. All lamps have been replaced in the Dolby 361 unit. Includes US type AC cord. Guaranteed to work properly.
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