Active volume control for all preamp systems.CV Volume Control$22.60PriceQuantityAdd to CartSpecificationsBoard Dimensions: 18.7 x 15.1 x 13 mm. Pot Shaft: "D", Dia=6mm, L=20mm. Pot Bushing: M7x0.75, L=7mm. Nuts, washers, and Pot Nut included.