Gecko Pedals O-Face Modulated Overdrive



The O-Face is the worlds first and only overdrive with optically modulated control knobs!

It is like having four pedals in one, taking a killer-sounding overdrive and adding in a tremolo, a tone-vibrato, a pulsed gain

At the heart is a fantastic all analog high-output drive circuit, which was carefully designed to authentically sound as much as possible like a tube amp being driven hard at high volume.  It then adds an industry first: independent optical knob modulation on each of the overdrive control knobs!

With the push of a button, any of the three overdrive Gain, Tone, and Volume controls can be set to oscillate automatically, as if the knobs were being turned back and forth by invisible hands.   Each modulation has its own independently configurable speed, depth, waveform shape, and phase, allowing nearly endless different sounds to be created.  To top it off, an illuminated ring in each pushbutton pulses to show the exact waveform for each modulation.

What exactly does optical modulation mean?  Much like how the old Uni-Vibe pedals used an LFO-driven bulb shining onto photo-sensitive resistors to create its phasing effect, the O-Face uses a similar technique.  Rather than using an incandescent bulb, the O-Face uses LEDs that will never burn out, and instead of a single bulb, the O-Face needs 4 separate photocell lights to do all of its modulations.  That’s right, the O-Face has 4 pulsing lights inside that make all the of the modulation magic happen!

It also has loads of other less obvious features including:

  • Tap-Tempo to set the modulation speed
  • Tap-Hold feature ramps to a configurable speed & depth set-point
  • Presets to store all of your favorites
  • Full MIDI control with CC’s for every function and both in and out jacks
  • neutral tone filter adjustment feature to sculpt the core neutral tone.

All of these features combine to create a truly unique and incredibly versatile pedal.  It can be used as anything from a pure overdrive, to a multi-channel modulation effect that can create some really unique never-heard-before sounds.  Plenty of options are available, and the presets can store all of your greatest hits.

Each O-Face is hand-crafted in small batches with genuine, quality components and individually hand-numbered.  Absolutely everything, including circuit board assembly, machining, powder coating, screen printing,  assembly, and testing, is done in-house right here in Eugene, Oregon, U.S.A.

Features include:

  • 100% analog 4-stage overdrive circuit.
  • A unique soft-clipping diode configuration that achieves both high output and a soft knee for a tube-like sound.
  • Optical independent knob modulation for each of the three overdrive control knobs.
  • An illuminated ring in each modulation pushbutton visually show the exact modulation waveform.
  • Independent control over each modulation.  Each can have its own speed, depth, phase, and wave shape.
  • tap-tempo switch can easily set the modulation speed.
  • Tap-hold feature ramps the modulations to a configurable speed & depth set-point.
  • Three programmable presets can be recalled through hardware (12 through the MIDI interface).
  • Fully MIDI controllable through a compact 1/8″ mini-jack MIDI interface.
  • Top-quality all-metal hardware and jacks used throughout.
  • Powder-coated enclosure and epoxy ink artwork for ultimate finish durability.
  • Gold-plated contacts on the circuit board (ENIG finish).
  • Genuine Hammond Manufacturing all metal enclosure.
  • Quality silicone wire is used for all peripheral circuit board connections.

Weight and Dimensions:

  • Dimensions: 3.75 in W x 4.72 in D x 3.5 in H (94 mm W x 127 mm D x 62 mm H)
  • Box Dimensions: 6.5 in W x 4.875 in D x 3.625 in H (165 mm W x 124 D x 92 mm H)
  • Weight Without Box: 14 oz (400 g)
  • Weight With Box: 18 oz (512 g)

Read O-Face articles and reviews:

O-Face Owners Manual

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We are very picky about the product lines we carry here.  They must have great tone, stellar reliability and the right vibe.  Thus far, We are very impressed by all of the manufacturers we deal with .  In addition, the manufacturers we carry all have one big thing in common:  They are all Super-creative People that are fun and easy to deal with!