Vertex Effects Ultraphonix Overdrive Pedal

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Sku: 748252632654
Vertex Effects Ultraphonix Overdrive Pedal

The Ultraphonix Overdrive is designed to re-create the overdrive produced by a Dumble Overdrive Special amplifier. Four Overdrive Specials were used in the voicing and calibration of the Ultraphonix, each amp ranging in origin from the years 1970-1990. Being modeled after four different generations, the Ultraphonix accurately captures the character of the legendary Dumble amplifier, regardless of the minute and more apparent differences in the amp from year to year. The Ultraphonix is more than able to provide the D*style overdrive in front of any clean amp platform. Engage the Ultraphonix in tandem with another overdrive pedal or in front of a broken-up amp to really cut through a mix with a huge lead tone or thundering rhythm tone.


• 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
• Assembled in California
• 9VDC center-negative power operation (adapter not included)