Pigtronix EP-1 Envelope Phaser



  • Sensitivity
    controls the sensitivity of the effect to the input signal.
  • Sweep
    controls the depth/amplitude of the modulation (the size of the range in which the effect sweeps).
  • Resonance
    sets the amount of effected signal fed back into the effect (for a stronger effect)
  • Speed
    controls the speed/rate of the LFO wave that controls the effect
  • Intensity
    controls the depth/amplitude of the modulation (the size of the range in which the effect sweeps).
  • Character
  • EF/LFO
    switches between Envelope Filter (EF) and Low Frequency Oscillator (LFO) mode
  • Invert
    for subtractive or additive phase shifting


the press release

Pigtronix introduces groundbreaking Envelope Phaser pedal.

Redwood City, CA - Absara Audio proudly annouces the launch of the Pigtronix EP-1 Envelope Phaser, a fresh combination of classic analog effects, presented in a compact, multi-function foot pedal. An analog effect for the 21st century, custom shop versions of the EP-1 are already in use by the likes of chart topping road warriors, Maroon 5, jazz/funk/jam favorites, Soulive, 10-string bass virtuoso, Stew McKinsey as well as the world reknowned NYC recording studio, The Hit Factory.

The Pigtronix EP-1 Envelope Phaser feautures the fattest, most responsive, touch sensitive sound of all time. The EP-1 is an expressive, flexible, dynamic effect with a warm analog personality, versitle tone palette and a stage friendly interface. Huge tone, plus a wealth of modern features truly make EP-1 a, "next level effect pedal."

At the heart of EP-1 is an opto-electronic asymmetrical phase shifter that can be controlled by either a low frequency oscillator or an envelope follower. Advanced features include footswitchable phase inversion, expression pedal speed control for mindbending, rotary speaker effects and an EF trigger input that allows an instrument's audio signal to be modulated by an external source such as a drum machine or a beat from a laptop.

Destined to be the modulation effect of choice for many guitarists and bassists looking for that elusive, liquid tone, the EP-1 will also find itself at home in the hands of DJs, laptop musicians and professional recording engineers.

There first was a prototype, called the Pigtronix EP-0


myFXDB user reviews

1 review, average score of 9.5 / 10

2015-12-12wiendahl9.5/10  super funky and really neat features, ended up getting rid of it when i got the ep 2 though.box was pretty large and oddly shaped

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