Just re-iterating my thank you from my c84 thread. You have blessed us all with not only great pre's but a fun and educating electronics project. I found my mistakes to be as if not more informative than my successes.
The parts and workmanship on this stuff is incredible! My friend Roger ( authorized Neumann and Studer tech in Canada ) was very impressed by the layout and BOM of your pres as well. May you have all the success in life that you desire! Thanks Tim!
P.S. Have you ever considered doing api 500 series type eq's and compressors? You would be able to sign me up for a whole rack at that point!