Stone Deaf FX EP-1 Expression Filter


Stone Deaf FX

The EP-1 expression pedal is like a chameleon with an ability to take a standard Stone Deaf parametric or paracentric pedal and turn it into a Manual Phaser, Wah Wah or Foot Controlled Tone control.

The EP-1 expression pedal is unlike any other expression pedal on the market because it is customised to only work with Stone Deaf products and is not an off the shelf item to work with every pedal with an expression jack. This is because we use custom components manufactured to our specifications, which will compliment our pedals perfectly with no compromise. As we strive to be different we have to create new things.

The benefit of this is, that it’s not a one trick pony with a mission to do just one thing.


  • Foot Controlled Tone Control Mode: allows you to control your bass, mid and treble boosts and cuts on the fly as you play which gives you a huge tonal land scape to play with.

  • Manual Phaser Mode: allows you to control the scooped filter fr the parametric or paracentric circuitry of our pedals so you can get foot controlled phasing sounds, controlled by the speed of the sweep of your foot. This is the opposite effect of a Wah filtering.

  • Wah Wah Mode: allows you to use the expression pedal as a Wah Wah pedal to get some amazing Wah Wah sounds by controlling the boosted filter of the parametric or paracentric circuitry of our pedals. With its wide frequency sweep it goes much further than a standard off the shelf Wah Wah pedal so you can get a wide range of wah tones using the bandwidth switch as well.

  • Adjustable Sweep: allows you control the resistance of the sweep using the two bolts at either side of the tread plate. This means you can tight or slacken for more or less resistance

  • Freq Knob: enables you to dial in the exact same setting of the Freq Knob that are on the parametric or paracentric pedal you are controlling using the EP-1. The benefit of this is when you turn off the expression pedal you can go back to your original setting on for example the “Trashy Blonde” which you might want to do once you have finished playing with the expression pedal.

  • Led Light: one thing we found is that on most expression pedals you can’t see when they are on which is a bit stupid so we've decided to put an ultra bright led so you can see when the EP-1 is on or off.

  • 9v Power socket which will accept standard (BOSS style) 9v positive polarity power supply. This powers the ultra bright led.

  • Battery Drawer which will enable you to access the battery easy and quickly without unscrewing the pedal. This powers the ultra bright led.

  • Custom manufactured steel enclosure: we have opted to manufacture our own enclosure here in the UK made from steel rather than the far eastern enclosures that nearly every other manufacturer ops for. We've found they are too restrictive in our development of products and function. By manufacturing our own we are in control from the start to offer modifications to our customers using our own enclosures as for instance we may have free upgrades and mods as time goes on.

  • Grippy Tread: Our grippy tread is fantastic because it allows any type of footwear to be used with our expression pedal. Sometimes rubber on rubber can slip but with this its never going to slip.

  • Custom Options: because we manufacture our own we will be able to offer custom paint jobs and printing of our grippy tread on our expression pedals.

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