Description: Burwen Research KLH DNF 1201A Dynamic Noise Reduction Filter This unit comes from the estate of a broadcast engineer who kept his gear in really good condition. "Dick Burwen was something of a hifi genius for his entire engineering career. A dedicated servant to the pursuit of "dynamic noise reduction" Dick paved the way for other industry giants like KLH, DBX, and Dolby Labs -- Often by being hired by them and designing their product lines! Burwen's influence on noise reduction circuits from the earliest "pop/hiss" systems used for radio station playback in the 1960s, up to today's more sophisticated systems. They all owe a nod to Mr. B. The DNF ("Dynamic Noise Filter") -1201A was one of Dick's own commercial endeavors. The unit connects to an audio system in much the same way as an equalizer or other sound processor. Then, using a series of push-buttons located on the front of the unit, the user is able to select the sensitivity range and dynamic response of the internal noise reduction circuitry. A Suppression Sensitivity slider allows for fine-tuning of this process, which could vary based on the type of source being used. This unit has been fully serviced and restored, including all new gold-plated connection points at the rear. A fine example and a little piece of audiophilic history. " Design Notes: https://archive.org/stream/dnf-1201/dnf-1201_djvu.txt Manual: https://vjuliano.net/web/dnf-1201.pdf Terms & Conditions: Sold "as-is" due to age. All sales final.
Price: 125 USD
Location: Bandon, Oregon
End Time: 2024-11-18T23:11:44.000Z
Shipping Cost: 30 USD
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Item Specifics
All returns accepted: ReturnsNotAccepted
Brand: KLH Burwen
Type: Vintage Enhancer
Model: DNF 1201 A
Country/Region of Manufacture: United States
