The Treble Bass Expander (TBX) is a stacked and detented 250K/1Meg potentiometer that expands your tonal palette. It functions as a standard tone control from 1 to 5, after which it decreases resistance, sending more bass, treble, presence and output to your amp. Mounting hardware and installation instructions included.

Part#: 0992052000

UPC 717669448011