Description
Guitarists chasing a wider tonal window on stage will appreciate what the Fender TBX (Treble Bass Expander) pot brings to a passive instrument. It’s a stacked and detented 250K/1Meg potentiometer that behaves like an ordinary tone control through the first half of its rotation—rolling from 1 to 5 the way you’d expect. Push past that detent, though, and resistance drops, opening up more bass, treble, presence, and overall output straight from the guitar’s own circuit. No preamp, no onboard battery, just passive electronics doing more work.
For players who need to go from a warm rhythm tone to a cutting lead voice without reaching for a pedal, this kind of onboard flexibility is genuinely useful when you’re plugged into a full PA or backline and can’t fuss with settings between songs. It’s a straightforward install for anyone comfortable with a soldering iron, and everything needed to get it in the guitar is included.
- 250K/1Meg stacked and detented potentiometer
- Acts as a standard tone control from 1–5, then expands treble, bass, presence and output
- Fully passive design — no battery required
- White “tone” control knob included
- .022mf capacitor and 1/4-watt resistor included
- Mounting hardware and installation instructions included
A simple upgrade that gives a passive guitar a wider dynamic and tonal range for stage or studio use.
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