Description
Passive pickups deserve a volume pedal that won’t choke their tone, and that’s exactly what this Ernie Ball 250K Mono unit delivers. The 250k ohm potentiometer is matched to the audio path of passive instruments, keeping your signal full and unloaded whether you’re placing it first in the chain for guitar-swell textures or further down the board as a hands-free level control.
Flip open the footplate and you’ll find a taper switch tucked behind the jack area, giving you two distinct volume swell curves to choose from — handy for switching between a slow, ambient fade and a quicker cut for live dynamics work.
Mechanically, this pedal is built to take a beating on the road. The main pivot shaft is centerless ground 1/2″ diameter stainless steel, seated precisely through nylon bushings on both ends. That oversized shaft diameter isn’t just about durability; it spreads stress across a broader bearing surface, so the treadle stays smooth and consistent swell after swell, gig after gig.
- 250k ohm mono potentiometer, optimized for passive electronics
- Switchable taper for two distinct swell rates
- Centerless ground 1/2″ stainless steel pivot shaft with nylon bushings
- Dimensions: 4″ W x 11″ L x 2 3/4″ H
This unit is offered as Open Box Mint — inspected and complete, ready to earn its spot on your board.






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