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Fredric Effects
Fredric Effects Do The Weasel Stomp! MKII

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Fredric Effects Do The Weasel Stomp! MKII

Fredric Effects Do The Weasel Stomp! MKII

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Find out who is using Fredric Effects Do The Weasel Stomp! MKII

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Page last updated Mar 10, 2026

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Description

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Following the success of the first version of our Systech Harmonic Energizer-based pedals, we've come back with a new and further improved Do The Weasel Stomp! In addition to being a clone of the original Harmonic Energizer - capable of all the original HE sounds - it also features a foot-switchable fuzz circuit, closely modelled on the 70s IC Muff Fuzz, and an expression pedal input. As well as the foot switch for the fuzz circuit, the MkII pedal adds mini-pots to adjust the opamp gain and fuzz volume. Cranking the opamp gain produces the characteristic 'barking' filter sound heard in the Harmonic Energizer demo below. Thanks to the new master volume control, you can now get this sound at any volume.

What was the Systech Harmonic Energizer? It was an extremely interesting oddball filter/harmonic expander type pedal favoured by Frank Zappa. It could used as a treble or bass boost, and there's a cocked wah setting. Originals are very rare.

Do The Weasel Stomp! pedals feature brilliant custom artwork by Stacey Hine, professionally screenprinted onto powdercoated enclosures, for a lifetime of hard-wearing Weasel Stomping.

Expression input

The expression input works with expression pedals with 50k pots, with 0-50k resistance from ring to tip. Expression pedals vary widely in specification, so we just picked one which is commonly available, cheap and rugged and went with it... So this pedal works best with the Behringer FCV100 expression/volume pedal. Use it with a standard mono patch lead.

Product specs

Effects	fuzz, overdrive, wah
Power	9V
Bypass	true bypass
Analog/Digital	analog

Videos

timhulio

Fredric Effects Do The Weasel Stomp MkII - Systech Harmonic Energizer and more!

Video thumbnail for Fredric Effects Do The Weasel Stomp MkII - Systech Harmonic Energizer and more! by timhulio

Fredric Effects Do The Weasel Stomp MkII - Systech Harmonic Energizer and more!

timhulio

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Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Folk, World, & Country

Community setups

awwim

Gear IQ 1869

3

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