I love Studer mixers! I've got a few but not a 990. Yours looks like a really nice project and if you get it all working to spec it's a terrific sounding mixer and really nice to use. When you've finished that, if you're looking for another project, I've got a D950 in storage that could probably do with some tlc Amongst others!
I noticed the other day that there's a 990 listed on eBay or Reverb for sale in Spain iirr, which shows some floppy discs in the listing pics - maybe they have any software you're missing and could copy it for you if they're feeling helpful.
I've restored a Studer 990 Console. Can anyone tell me about Arcnet?
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