Allparts Emerson custom treble-bleed circuit mod lets you retain high-end clarity when adjusting your volume pot. Made in the USA from premium components, this treble-bleed circuit features a polystyrene capacitor and precision metal film resistor to naturally taper your volume control without compromising tone. Perfect for upgrading your guitar or bass, Emerson Custom's handmade paper-in-oil capacitors and treble bleed circuits are crafted with the discerning musician in mind.