I recently made my own Varitone, so I'm letting this great-looking passive tone control go! It is a classic 6-position Varitone control (first setting is true bypass). Cool ultra-large knob and fine craftsmanship from Birdsong Custom Guitars.
It cost me $99 direct from Birdsong. They don't show up often & this is one of the cooler, more compact ones they've made (no two are exactly alike). Fully copper shielded inside.
With original instruction sheet. Serial #19
$80 shipped to ConUs. Paypal, please!
(cross-listed in effects)