Sutherland 20/20 Load and Gain Settings

The Sutherlands were designed at different times. The Insight is actually a better built, AC-powered version of the older, battery powered PH3D.

The 20/20 was more of a clean sheet design keeping with Sutherland's dual mono principles.

Since the Insight was originally produced, Ron has substituted the 10K loading with a 475 ohm loading, per reports from other N&G owners.
There have been a few redesigns, per some emails with him about this very question.
 
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