Allparts Emerson Custom treble-bleed circuit volume mod provides you a simple upgrade to retain high-frequency clarity when adjusting your instrument's volume control. Handcrafted in the U.S. using premium components, these treble-bleed circuits allow you to roll back the volume without losing treble response. Each circuit features a polystyrene capacitor and precision metal film resistor wired in parallel for a transparent sound. Whether you play guitar, bass or another instrument with passive electronics, the Emerson Custom treble-bleed circuit volume mod lets you shape your tone with greater precision. For musicians seeking enhanced tonal control and articulation, this mod kit delivers.