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Vertex Ultraphonix Overdrive Effect Pedal  From Vertex

Dumble-style overdrive by Vertex Effects


Our product photos are the actual, specific serial number for sale!

This specific item was photographed by us here in Durham, North Carolina. We are a very small team dedicated to providing you the most accurate photos possible, through our obsessive focus - individually photographing nearly everything that comes through the door. Questions about what you see? Want more information, photos, or just a friendly conversation with someone that cares and who has actually had their hands on this exact item? Contact us now!
Vertex Effects


"Experience the Difference"

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In addition to the standard included manufacturer warranty, virtually all new products carry our exclusive, industry-leading, absolutely free, Sound Pure 3-Year Warranty, which includes PARTS & LABOR. This high-value perk is our way of providing the ultimate in added value to enhance the unique personal touch our small, dedicated team contributes to each purchase.
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Free Lifetime Technical Support!
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Suhr Classic JM Pro Olympic White Electric Guitar Quick n' Dirty

In this video, Sound Pure guitar specialist Eddie Berman tests out the Suhr Classic JM Pro Olympic White Electric with a Suhr Bella Reverb Head, a Suhr Bella 1x12 Cabinet and a Vertex Dynamic Distortion Pedal.

Manufacturer's Description from Vertex

The Ultraphonix Overdrive is designed to re-create the overdrive produced by a Dumble™ Overdrive Special amplifier. Using a sample size of four generations of Overdrive Special amplifiers from 1970-1990 to voice and calibrate the pedal, the Ultraphonix is more than able to provide the D*style overdrive to any clean amp platform.
Vertex Effects


Voiced alongside four Dumble™ ODS amps ranging from 1970's-1990's

Quintessential D*style tone, note bloom, & harmonic overtones

100% Analog Circuitry

Mechanical "True Bypass" Switching

Designed & Assembled in California

9VDC center-negative power operation (adapter not included)