In fact, companies like Fender, Pro Line, Di Marzio, Gibson, EMG and countless others specialize in replacement parts for fretted instruments, and this most certainly includes potentiometers and knobs.Have a look through this catalog and see for yourself.
Later production "flip-up" double mute models, and all subsequent single mute Gents have these controls mildly following the curve of the lower bout.
What you have here is a straight booster preamplifier mounted on a mini toggle switch.
Ideal for those who want to overdrive the input of their amp for killer distortion, this booster switch also works terrifically with passive pickups.
Whether you own an electric bass or a flat top guitar, you never know when your instrument is going to need a replacement or upgrade in the potentiometer or knob department.
Thankfully, you'll have no trouble finding potentiometers and knobs for fretted instruments on today's market.