I like the switch idea too. If going that route I'd use high quality switches like C&K.

Regular 1/4" Switchcraft Jacks are very robust, and hard to beat for reliability.

Nobody makes a reliable barril jack, though, including Switchcraft. G&L uses a stereo berril jack on its basses. In that case it's wired as a switch to disconnect the battery when the bass is unplugged. Nothing but trouble.

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