The classic Dual Negative Slopes + Hills & Valleys is a dual voltage controlled decay generator with added min/max processors (Hills & Valleys) in the 4U Modular format.
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Assembled Modules are built to order, please be patient when ordering. Use the contact page if you have any questions or requirements!
An error was found on the current pcb in the Hill/Valley’s section of the circuit. R57 connects to the nodes between pin 2 of Q4 and Ground. The Ground side of R57 should actually connect to V-.