QuakeMachine MKII

New QuakeMachine is available @  9.2022 you can place your Order.

New Revolutionary Wah Wah-Pedal !

QuakeMachine Manual

Our brand new wah-wah device for bass and synthesiser. The very first such effect designed to function deep into the bass. A frequency range that extends as low as 41Hz offers a raft of sound possibilities especially optimised for the “low end”. The result is mean, monster bass. It features the Earth and Quake selectors as well as fine-tuning possibilities. In the Modern mode, the effect signal can be mixed with the original to maintain a powerful bass presence that´s worth its weight in gold. The Classic mode opens whole new dimensions of sound for the bass guitar. Suddenly the bass is able to produce sounds that were previously only possible with the filters of a synthesiser.

Three function selectors vary the filter circuitry directly and offer a host of sound variations:- hot, funky sounds, biting heavy riffs and out-of-this-world Space effects. The Earth and Quake selectors can be used in combination to produce a total of 12 sound configurations. The Earth selector switches between three different frequency ranges and the Quake knob is responsible for the “Q-Factor” – altering the band width of the filter.


The mini switch lets you change instantaneously between Modern and Classic modes, where “Classic” represents the familiar wah-wah effect while “Modern” supplies the opportunity to create new and subtle variations by mixing the effect signal with the original input. The mode is indicated by means of the LED.

For the Modern mode a trimming potentiometer T1 on the circuit board governs the mix between the original and effects signals.
New ! T2 adjust the Effect level of the Wah Effect.

Stainless Steel Chassis
Metal Pots and Switches
Electronic True Bypass Switch
Two paralell outputs for easy operation..tuner..
9 VDC Jack
Easy-access battery compartment
Technical Specifications:
Power supply: 6 – 18 V DC normally 9 V DC.
Power consumption: 2,7 mA.
Weight 1,8 KG
Dimensions: B 13,0 x T 24,5 x H 5,7cm

press release:
Gitarre&Bass 12/98 …a multitude of possibilities…convincing by virtue of optimising the wah-wah effect for bass instruments and by its low-noise characteristics.
EarthQuake MKI Bass Player Magazin, date 8.2003, press archive engl.
EarthQuake Revolution BassProfessor, date 3.2005, press archive germ.