The Medium-Solid Shaft Potentiometer from PRS features a 180pF capacitor and is designed for surface-mounting. The 500k ohm resistance and 180pF capacitor type offer better frequency handling for musicians. The 180pF capacitor acts as a high pass filter, removing shelved low-end that allows high frequencies through for more clarity and musical highs as you roll the volume off. Compatible with PRS Dustie Waring.