[Eeyore]

Peter Larsen wrote:

Eeyore wrote:

And the bias current in the output stage is a far larger fraction of
the maximum load current. It may operate entirely in Class A with
many or even most loads. Not many people are using 600 ohm working.

Let that apply for the poweramp too ... not at an unrealistic
concept for home use ... and there is NO issue.

Would you seriously suggest an amp or so of quiescent current would be
acceptable ? It certainly WILL fix the problem of course.

Please enhance that point, I can see what you mean, but not how it applies.

How it applies is to swamp the non-linear effect that results from changes in
output device transconductance when biased to lower values of quiescent
current.

If you're not familiar with that effect please say so.

Graham