Lowpass Filter


The Xerograph is a fat, synth-inspired 4-pole resonant lowpass filter. It offers a wide variety of filter sounds, from monstrous dubby bass, to synthy resonant filter sweeps, and wah.



2-pole/4-pole switch:

– 2-pole mode is a classic, funky filter with a wide, vocal-like resonance peak.

– 4-pole mode offers a fat, deep, and synthy filter with a sharp resonance peak.


Frequency: When using the filter without an expression pedal, this control sets the cutoff frequency of the filter, allowing you to dial in deep, dubby bass sounds. When using an expression pedal with the Xerograph, the Frequency knob sets the low extent of the filter sweep.

Resonance: Boosts frequencies around the cutoff frequency, which intensifies the effect of the filter. Set the resonance low for more subtle tone-shaping, or turn it up to around 3-o’clock for wet synth sound. Turning it to maximum sends the filter into self-oscillation.

Volume knob: Sets the output volume of the effect, ranging from quieter than the bypassed signal, to boosted.

Frequency expression jack: Connecting a passive expression pedal to the expression jack allows you to control the frequency of the filter with your feet, allowing for slow, resonant sweeps, or fast, funky squelches.


Low-noise, low-distortion active components chosen for excellent audio fidelity.

Measures 4.7″ x 2.5″ (12cm x 6.3cm). 

Runs on industry-standard 9 volt DC center-negative power supply. 85mA current draw.

Relay-based true bypass.

All jacks are located at the top of the pedal to save pedalboard space.

Learn more about the construction of IE pedals here.