Ernie Ball is best known for strings and player accessories, but the current GPAS selection also includes volume pedals and pedal-power equipment. Products such as the MVP and VP JR volume pedals sit alongside the Volt DC supply, pedalboard accessories and Slinky strings. Compare taper, gain or boost functions, output requirements, cable layout, string gauge and pack contents rather than treating every Ernie Ball listing as the same type of product.