[quote author="analag"]Check out this link http://www.tubecad.com/october99/page15.html, it was a follow up to a question, I asked John Broskie from Glass-ware.com/Tubecad concerning TT preamps.
Analag[/quote]
Yes, we know the tubecad mic preamp and it was discused at the old place, and if I remember PRR had some concernes about this design. Also I think it has a fixed gain and it was something like 45dB (hope my memory is OK), and it is not optimised for noise at every level.
chrissugar