The Mojo Hand FX Mr O is a phaser pedal that the maker says was "created to reproduce the special and beloved sound of the original phase shifter pedal"1. It packs that circuit "inside of a smaller, pedalboard friendly footprint"2. Alongside new units, Mojo Hand FX sells B stock pedals, described as in perfect working condition and coming with the original box, box goodies and a lifetime warranty2.
Where it came from
The Mr O takes its cue from the original phase shifter pedal, a sound Mojo Hand FX calls "special and beloved" and set out to reproduce1. The maker's aim was to carry that effect into a smaller, pedalboard-friendly footprint2.
Mojo Hand FX states plainly that the Mr O "was created to reproduce the special and beloved sound of the original phase shifter pedal"1. The company also sells B stock versions, which it describes as in perfect working condition, complete with the original box, box goodies and a lifetime warranty2.
B stock units are sold as in perfect working condition and come with the original box, box goodies and a lifetime warranty2.
The controls
The Mr O keeps its control layout close to the original's idea: speed, intensity and feedback, plus a stage-count switch1.
| Control | What it does |
|---|---|
| Speed | Controls the speed of the LFO. Mojo Hand FX says it carefully replicated the unique shape of the original's LFO waveform at various speeds2 |
| Depth | Adjusts the intensity of the phase shift, from subtle to more drastic1 |
| Color | Controls the amount of feedback regeneration, to add a bit more or less "whoosh" if desired; low is smooth and warm, high creates sharper resonant peaks1 |
| 4/6 button | Switches between the original six phase stages (up) or decreases to four stages (down)1 |
The Speed knob's positions are mapped to the original's speed settings. Mojo Hand FX explains that adjusting Speed to the far left simulates the original's slow speed position, 2 to 3 o'clock simulates the fast position, and far right offers faster vibrato-realm speeds; at 12 o'clock with the stage switch up, it emulates the original's medium speed position2.
Power and practicalities
The Mr O runs on a standard 9V DC center negative supply, which is not included with the pedal1. Mojo Hand FX lists the current draw at approximately 70mA1, a figure worth checking against your supply's per-output capacity when planning a board. Bypass is true bypass1.
Mojo Hand FX also lists a B-stock version of the Mr O, described as in perfect working condition, coming with the original box, box goodies, and a lifetime warranty2.
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Questions
What power supply does the Mojo Hand FX Mr O need?
The Mr O runs on a standard 9V DC center negative supply, which is not included with the pedal. Mojo Hand FX lists the current draw at approximately 70mA, which is higher than many simple pedals draw, so it is worth keeping in mind when budgeting the capacity of a power supply or daisy chain on your board.
Is the Mr O true bypass?
Yes. Mojo Hand FX lists the Mr O as true bypass, so when the pedal is switched off, your guitar's signal passes through without the phaser circuit loading it. That matters if the Mr O sits on a larger pedalboard alongside buffers and other always-on effects.
What does the Color knob do on the Mr O?
The Color knob controls the amount of feedback regeneration in the phase shift circuit. At lower settings the sweep is smooth and warm; turning it up creates sharper resonant peaks. Mojo Hand FX describes it as a way to add a bit more or less "whoosh" to the effect, depending on what the part calls for.
How much current does the Mr O draw?
Mojo Hand FX lists the Mr O's current draw at approximately 70mA at 9V DC. That is a meaningful draw compared with many compact pedals, so a supply with enough headroom per output is worth considering when placing it on a pedalboard.
Is the Mr O based on the Maestro Phase Shifter?
Yes. Mojo Hand FX designed the Mr O after the original phase shifter pedal released in the early 1970s, which was intended to replicate the sound of a Leslie rotary speaker. The pedal keeps the original's six phase stages, though Mojo Hand FX notes it is in no way sponsored, endorsed or affiliated with Gibson or Maestro.
Sources (2)
- Mr O - MojoHandFX, MojoHandFX
- Mr O - B Stock, Mojo Hand FX
