This is my concept art for the controls of my guitars. The intention is for them to seem mundane except they would appear to have no wiring, no visible means of power.
Their default is volume and tone, but are MIDI programmable absolute position rotary encoder actuators featuring adjustable resolution, progressive rise, and torque.
As with the rest of this prototype, the knob aesthetic accents are fashioned from mokume-gane (木目金) created with 3 colours of aluminium bronze with different per cents of copper. I would prefer the same copper titanium alloy as the EVOGold frets, but that is a high priority right now.