I’ll email you about my project because I imagine you’ll find it
interesting. And maybe you’ll be around for a phone call over the
holiday "dead" week between Xmas and New Years? I'm sure we do in fact
agree on 90+ percent of this stuff!
I'm usually around- quite often that is our busiest week of the year.
I am familiar with the nulling technique- hard to get through school without knowing that. I am skeptical that the test will have the resolution required but I suspect that will have a lot to do with what exactly is being tested.
A customer of mine liked to replace parts in the power supplies of his equipment. In order to know if he made any progress he placed a microphone in his room at the listening chair and then ran sweeps and distortion tests, and compared them to 'before' and 'after'. He was thus able to document what he heard.