ADM 668, 666, and 700 cards/channels

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Out of the Blue

Well-known member
Joined
Oct 12, 2005
Messages
52
Location
Michigan
I used to have all these documents, but they were lost last year when a friend passed. Does anyone have any info on any 668 or 666 line/ preamp cards? The 700 is currently wired up, but appears to be modded, so I'm looking for a schematic for that as well.
Any help is greatly appreciated.
 
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