The ISP Technologies Fetish Overdrive/Distortion is an analog gain pedal that covers several jobs at once. according to RockBoard's PedalPedia, it can be used as an overdrive, distortion, clean boost, or treble booster depending on its settings, and it gets its gain from field effect transistors, which RockBoard's PedalPedia says are there for tube like dynamics1. It sits in the overdrive and distortion territory, with the boost roles covered by its settings rather than a separate mode switch.
Four jobs in one pedal
The Fetish's headline feature is its range of voices. RockBoard's PedalPedia states plainly that "The Fetish™ can be used as an overdrive, distortion, clean boost, or treble booster depending on settings"1. For a player, that means one enclosure can serve as a light gain push into an amp, a full distortion voice, a boost for solos, or a treble booster for cutting through, all set by the pedal's controls.
The gain stages use field effect transistors, which RockBoard's PedalPedia describes as "utilizing field effect transistors for tube like dynamics"1. FET based designs are a common way builders chase the touch sensitivity and response of a tube amp's front end in a pedal.
Controls
| Control | What it does |
|---|---|
| Fat | A variable control that RockBoard's PedalPedia says "provides body and depth to a variety of settings"1 |
The Fat control is the pedal's distinguishing control, letting a player add low end weight and thickness across the pedal's different voices1.
Chassis and build
The Fetish is packaged in what RockBoard's PedalPedia calls "the same rugged, beautifully polished smooth chrome chassis as the Decimator Pedal"1, the company's noise reduction pedal. RockBoard's PedalPedia notes that the design went through a year of testing before the pedal "has moved from the drawing board to production"1.
The Fetish draws 100mA at 9V DC1. That is more than many compact overdrives need, so a low-current output or a daisy chain may not run it reliably.
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Simon Smith
Questions
Is the ISP Fetish analog?
Yes. ISP Technologies lists the Fetish Overdrive/Distortion as an analog circuit. It uses field effect transistors, which the maker says are there for tube like dynamics, and it is built in the same polished chrome chassis as the company's Decimator Pedal.
What power supply does the ISP Fetish need?
The Fetish runs on 9V DC with a center negative plug. ISP Technologies lists its current draw as 100mA, which is higher than many simple overdrives, so it is worth checking what your power supply's individual outputs can deliver before adding it to a daisy chain.
What does the Fat control do?
The Fat control is a variable control that ISP Technologies says provides body and depth to a variety of settings. In practice it lets you add low end weight and thickness to the pedal's overdrive, distortion or boost voices.
Can the ISP Fetish work as a clean boost?
Yes. According to ISP Technologies, the Fetish can be used as an overdrive, distortion, clean boost, or treble booster depending on its settings, so one pedal can cover several gain and boost jobs on a board.
Does the Fetish use FET transistors?
Yes. ISP Technologies describes the Fetish as utilizing field effect transistors for tube like dynamics, which is the basis of its gain stages rather than an op-amp based clipping design.
Sources (1)
- Fetish Overdrive/Distortion by ISP Technologies, RockBoard PedalPedia, 2026