M05936 MusicMan Potentiometer - 500k Tone, Luke III (NAMM 2013–2015) - potentiometer - 1 pc

The Music Man MC680W potentiometer (internal factory designation also used under the premium guitar preamp M05936) is a 500k push/push tone control designed specifically for Ernie Ball Music Man Luke III models made between 2012 and 2015.

This specific part from the NAMM 2013–2015 era controls the tone circuit and, when pressed, also activates the built-in +12 dB active boost (preamp gain).

Key specifications and features:

• Resistance value: 500 kOhm (ideal for guitars fitted with DiMarzio Transition humbuckers).
• Construction: Push/Push switch with a smooth solid shaft designed for metal knobs secured with a side/set screw.
• Wiring type (Version 1): The potentiometer is soldered directly to the PCB of the integrated preamp. It belongs to guitars with so-called Version 1 electronics, meaning it does not use a flexible ribbon cable (flex ribbon) that was introduced on later versions (V2).

Who it’s for / suitability:

This is the right replacement part for players and techs who need an original-spec tone pot with Push/Push boost functionality for early Music Man active electronics. It’s especially useful for modern rock, fusion and high-gain lead playing where the +12 dB boost helps push the amp for solos, while the 500k tone control keeps humbuckers clear and articulate.

Compatibility:

This spare part is fully compatible with US-made models from the given period:

• Ernie Ball Music Man Luke III (models with Push/Push function on the tone control up to 2015).
• Selected early versions of John Petrucci (JP13, JP15, JP16), Majesty V1 and Valentine that share the same preamp architecture without flexible cables.