Originally from a DA200S, and compatible with that line of amplifiers
Simmons - Drum TMI Drum Module Original Manual
Simmons Drum Module / Portakit Prototype MIDI Drum Module
MARSHALL Valvestate AVT2000 OEM Amplifier Control Knobs Lot of 10 Black Gold VTG
2x Mini Chickenhead chicken head pointer black amplifier control knob push on
5 x Replacement Marshall Amplifier Control Knobs for 6mm Shaft - Black/Gold Cap
Chickenhead chicken head pointer black amplifier control knob beak bill Hiwatt
