EarthQuaker Devices manufactures high-quality, handcrafted guitar effects pedals and synthesizers in Akron, Ohio, catering to musicians and sonic explorers.
EarthQuaker Devices (EQD) is an independent effects pedal manufacturer based in Akron, Ohio. Founded by musician Jamie Stillman, the brand is renowned for creating innovative, handcrafted effects pedals that cater to guitarists, bassists, and synth enthusiasts alike. From class-defining overdrives and fuzzes to wild, transfiguring delays and modulation devices, EarthQuaker has built an enviable reputation for high-quality, boutique audio effects.
Whether you are looking for the subtle analog warmth of the Special Cranker or the experimental Eurorack capabilities of the Wave Transformer, EarthQuaker equips musicians with robust, tone-shaping tools. Explore our collection of user manuals to get the most out of your EQD pedals.
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EarthQuaker Devices provides a limited lifetime warranty for all their devices. They will repair or replace any device as long as they are in business and materials are available. Wear-and-tear parts are fully covered for two years from the date of purchase, after which a $15 repair fee per item applies.
Most EarthQuaker Devices pedals require a standard 9-volt DC power supply with a 2.1mm negative center barrel. It is highly recommended to use pedal-specific, transformer-isolated wall-wart power supplies or isolated-output supplies to prevent unwanted electronic noise. Do not run the pedals at higher voltages unless specifically stated.
Flexi-Switch Technology is a relay-based, true bypass switching style featured on many EarthQuaker pedals. It allows you to simultaneously use momentary and latching-style switching. Tapping the switch acts as a standard latch, whereas holding it down engages the effect momentarily until you release it.
The ZEQD-Pre is designed to be used with an EF86 tube only. Do not replace it with an incompatible tube type. While the tube can be carefully swapped by the end user with another EF86, EarthQuaker Devices is not responsible for any damage caused by tube swapping.