Walt Jung biasing opamps in class A

[pucho812]

I read a comment referencing Walt Jung and how he had an article about biasing opamps( example 5532) to be class A operation.
That all you had to do was add a resistor to the opamp output going to the negative rail.

Does anyone have any details on this or the article the reference in the comment?

I would be curious as to what it achieves outside of heat increase?

 

[JohnRoberts]

I read a comment referencing Walt Jung and how he had an article about biasing opamps( example 5532) to be class A operation.
That all you had to do was add a resistor to the opamp output going to the negative rail.

Does anyone have any details on this or the article the reference in the comment?

I would be curious as to what it achieves outside of heat increase?

That was a popular audiophool tweak back in the 70s/80s trying to get something for almost nothing.

In theory forcing the output stage to operate class A at low level by sucking a bunch of current out of it sounds good in theory (to reduce crossover distortion), but if there was any real benefit to that, the IC makers could do it better and cheaper in silicon.

JR

PS; It has probably been discussed on this forum before (years ago), not necessarily as a Walt Jung thing, but general audio phoolishness.