Mastro Valvola

Mastro Valvola OFF1 Fuzz

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A world of experimentation!

The OFF1 pedal features 3 analog stand alone circuits in series: Octave (sub1 & sub2), Fuzz (with switchable octave up effect) and Ladder Filter.

Octave and Fuzz can be used individually for a more canonical approach of the two effects, while from their combination brings more experimental results.

The first effect in the internal signal chain is the Octave and then in series come the Fuzz and the ladder Filter.

By applying the Fuzz’s high octave effect and Filter on the low octaves you get out of the ordinary sounds and synth-style effects.

Lets take a look at each circuit.

Octave : The Octave circuit belongs to the family of the old monophonic octaves and can add the two octaves below the original note. Each octave has a separate volume control and plays back with outstanding clarity, thanks to the very precise and fast-tracking circuit, which allows even bridge pickups to be used without difficulty.

Fuzz : Fuzz has an edgy and grumpy character; it doesn't like being compared to other Fuzz tones. It’s capable of producing a wide range of tones from every fuzz era with careful tweaking of Gain, Tone and Mid frequencies controls. From thin and harmonic, to thick and growling. A pair of diodes is also used in the circuit to achieve the octave doubling effect reminiscent of the old octave up tones of the late 60's and early 70's. The high octave can be activated manually via the toggle switch or via the left footswitch when the pedal is in Mode 2.

Filter : The filter circuit belongs to the family of the legendary synths ladder filters and comes with the inevitable Cutoff and Resonance controls. You can crank the resonance and sweep the cutoff to hear those characteristic and wonderful harmonic peaks. The Cutoff control can also be controlled via an expression pedal (or CV) using the dedicated rear jack. The filter works combined with the Fuzz when the filter toggle switch is positioned downwards.

Mastro Valvola OFF1 Fuzz, Octave & Filter features:

• 3 analog circuits: Octave (sub1 & sub2), Fuzz (with switchable octave up effect) and Ladder Filter.

• Synth-style ladder filter

• 2 footswitches configuration modes.

• Footswitchs can be used in latching or momentary mode.

• Expression pedal input.

• Power: 9V DC.

• Current Draw: 100mA.



Type Fuzz
condition New
Power 9V DC
Current Draw 100mA
Power supply included No
Manufacturer Warranty 1 year
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  • Q : Where are you located? +

    A : We’re in Quebec, Canada.

  • Q : Can we meet? +

    A : Yes! We’re in Blainville, Quebec.

    Contact us to schedule an appointment.

  • Q : What payment methods do you accept? +

    A : We accepts credit card, Paypal and Bitcoin payments.

  • Q : What shipping method do you use? +

    A : We ship with UPS.

  • Q : How much does shipping cost? +

    A : Shipping to Canada and the USA is free on most orders.

    Shipping to the rest of the world is free on orders over 399$US.

    Visit the Shipping page for more infos.

  • Q : Do you charge sales taxes to Canadians? +

    A : Yes. Canadian residents are asked to pay sales taxes:

    Alberta: 5%.

    British Columbia: 5%.

    Manitoba: 5%.

    New Brunswick: 15%.

    Newfoundland and Labrador: 15%.

    Northwest Territories: 5%.

    Nova Scotia: 15%.

    Nunavut: 5%.

    Ontario: 13%.

    Prince Edward Island: 15%.

    Quebec: 14.975%.

    Saskatchewan: 5%.

    Yukon: 5%.

  • Q : Are there import charges on orders shipped to Canada? +

    A : No. Canadian customers will not be charged import fees.

  • Q : Are there import charges on orders shipped to the USA? +

    A : No. USA residents will not be charged import fees.

  • Q : Are there import charges on International shipments? +

    A: Shipping prices do not include VAT or other import taxes.

    Customers outside of Canada and the USA are responsible for duties and taxes.

    Orders that come back to the shop as refused by the customer will be refunded minus shipping.

    Please track your shipment to be aware of customs processing and delivery attempts.

  • Q : Can you declare a lower value on customs documents? +

    A : We understand that import fees are an annoying part of international purchases.

    However, we cannot offer to declare a lower value on customs forms.

    Customers outside of Canada and the USA are responsible for any fees that may be charged by their government.