I will be having some more time in the next month for some more tests.
I have been digging into the recording process more as it seem there was a huge improvement in the late 40's early 50's. It seems the Neumann U47 mic is credited with much of this. The U47 shares much in common with the "Hitler mic". The early U47 used the same capsule as the Hitler Mic. The so called "Hitler Mic" was a blank cheque government design given to Neumann so they could make a mic so good it would capture emotion not just sound.
http://www.wunderaudio.com/CM7sound.html
I understand the early U47 capsules were very complex (and costly) to make.
Duelund have you ever thought about redoing one of these U47's vintage mics with your Silver wire and Silver CAST caps???
We might actually end up with something better than the world has ever seen/heard!
Going back to more regular comparisons here soon and want to start using some Silver in the amps.