Boost Your Jazzy Groove with a DiMarzio Upgrade! Instantly enhance your instrument's performance with the BW2200 Jazz Bass Wiring Harness and Control Plate Upgrade by DiMarzio! From parts sourcing to final assembly, every DiMarzio prewired upgrade is assembled by hand and tested in the US to ensure the included premium parts work together for bold tone. Our favorite premium part at GearNuts is the included Sprague Orange Drop capacitor (.033) that fuels the smoothest high-frequency roll-offs you'll ever hear. Similarly, all included pots feature DiMarzio's custom taper for smooth, quiet rolls and adjustments. Neither a linear nor audio taper pot, these pots feature a 10-step rotary switch that's optimized for DiMarzio pickups but also plenty fit for other brands. Each pot shaft and threaded part is machined from solid brass — an impressive finishing touch for guaranteed superior performance that lasts. Send your J Bass on a trip to tone