[BC] Valley 401 schema

[Tom Taggart]

They wanted a mike processor for a single 4 hour show.
So I found one of these used.  Playing with it I think I'll feed it high level rather than feed it directly off the mike (Auditronics 2500 console--you can pull high level audio post preamp pre-fader)

Now the $64 dollar question: does anyone have a schematic for this critter?  Or an on-line source?  Not that it looks like it can be fixed--I think the circuit board sits on sticky-tape in the case.
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