Winfield Hill wrote:

Don Pearce wrote...

The mic inputs are discrete - you need to be looking at Q101 and
102 and so on. I'm presuming the line level stuff is quiet enough.

Right, as John and others have also said. Changing the opamp won't
make any difference for the mic preamp stages.

Well, actually it *will* at lower gains where the transistor noise no
longer dominates.

Besides the 4558 is a POS for audio in every possible way.


Graham