Nelson Pass, Author at Positive Feedback

The Square and Exponential Laws

Nelson Pass — Mon, 11 May 2020 22:22:50 +0000

Nelson Pass: a portrait. Sea Ranch, CA, 2018. (Photograph and image processing by David W. Robinson) This piece was originally presented at the 2019 Burning Amp Festival but was hampered by problems with the projection system. It has been rewritten for Positive Feedback.... Introduction I don't need to tell you that audiophiles tend to be... Read More »

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Leaving Class A - 2019 Redux: A Biased Opinion from Nelson Pass

Nelson Pass — Wed, 29 May 2019 03:07:21 +0000

In spite of the improvements in efficient Class D switchers, watt-sucking Class A power amplifiers continue to attract high-end audiophiles. The breed remains as popular as ever—and why not? Any product of our school system knows that A is better than B, or C or D... I get quite a bit of email, and it... Read More »

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The Pass H2 Harmonic Generator

Nelson Pass — Tue, 25 Sep 2018 23:00:39 +0000

Nelson Pass: a portrait. Sea Ranch, CA, 2018. Photograph and image processing by David W. Robinson. Introduction – Why do we care about 2nd harmonic? Historically, audio amplification has been about the elimination of all forms of distortion. Early on, the premise has been that low distortion is one of the keys to audio quality... Read More »

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