abbey road d enfer said:
If you haven't done, I recommend reading the series of excellent articles by Steve Dove.
http://84.255.203.119/Steve-Dove-Console-Design.pdf
May seem jurassic in some respects but OTOH some things never change.
+1.. There is precious little textbook advice covering the kinds of problems you encounter in consoles design, so this is a great resource and comprehensive in scope. I wish this article was available 10 years earlier. ;D
Today we have off the shelf solutions for some of the brick and mortar circuits he explored in such detail. A modern console is likely to use canned IC mic preamps and IC balanced output drivers (because they are that good now, they weren't back then).
The EQ is still an area for subjective choices, and the sum bus design is not going to be found in some off the shelf IC applications note (or if you do, probably not worth copying).
Of course the devil is in the details so you can combine perfect building blocks and still get a sub standard result. How you connect the dots matters.
JR
PS: Yes, I'm the same John Roberts mentioned in the acknowledgments on page 72. I've known Steve for years and he is the real deal. Last time I talked with him he was working with DSP, so not an analog only purist. but he surely knows his way around analog circuits .