There are a lot of posts about the more 'recent' Groove Tubes microphones, but is there anywhere I can get good information going back to day 1 through to present day? I have now or have owned (in assumed chronological order):

Model 5SC
Model 1B-FET
GT 66 tube
AM 62 tube (early? Alesis era)
a few of the AM condensers (LDC & SDC)
a few of the Sterlings (again LDC & SDC)

I'm more interested in any info on the older models- but searching google for "groove tubes model 5sc" you get results in Finnish on page 1, Russian and Japanese on page 2... info is rare indeed! Even the schematics page on Aspen's site doesn't quite have enough.

There are a few posts here, but only 2 even mention the 5SC and those have no information at all. So does anyone know where to find solid info?