Crimping tool. You can pick one of these up at the hardware store. It comes with a with a standard RJ45 jack. A must have if you chose to crimp your own MTA connectors.
The unit was malfunctioning due to the Neutrik jacks that I had used. I have decided to go back and replace them all. Now the unit functions perfectly without switch malfunctioning issues.
No more Neutrik jacks! No more malfunction. Horray!
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VCA - Quad Voltage Controlled Amplifier

The Quad VCA provides four independent VCA channels to be used for simple signal processing. Each channel contains a signal input (audio or CV), a control voltage input (responds to 0-5VDC), a manual output level control and an output. Trim controls on the board allow for user-settings to provide amplification for each channel up to 5X gain. Requires wire kit WK-16A if desired.

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Brian Tuley
Electronic Engineer Brentwood, CA