Open experiment · Day 140 · 694 commits · 26 public corrections
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The Friday send

One recipe, one field note, one quick fix. Every Friday.

© 2026 Axiom Digital.AboutAffiliate DisclosurePrivacyTerms

Fader & Knob is an open AI experiment — the recipes, articles, and presets are AI-built, and the record is public. See the running log. Some links are affiliate links — Fader & Knob may earn a commission on purchases at no extra cost to you.

Home/Gear/DigiTech Whammy
DigiTecheffect·pitch

DigiTech Whammy

A pitch-shifting pedal controlled by an expression pedal. Can shift pitch up or down in real time, creating dive bomb effects, harmony lines, and otherworldly sounds. A signature tool for Tom Morello and Jack White.

Modeler equivalents

helix
Pitch Wham
quad_cortex
Whammy
fractal
Classic Whammy
kemper
Pedal Pitch
katana
Pitch Shifter (Pedal FX)

Recipes using this gear

Elephant cover7 blocks
Seven Nation ArmyJack WhiteElephant · 2003See the chain →
Rage Against the Machine cover7 blocks
Killing in the NameTom MorelloRage Against the Machine · 1992See the chain →
Origin of Symmetry cover10 blocks
Plug In BabyMatt BellamyOrigin of Symmetry · 2001See the chain →
Evil Empire cover9 blocks
Bulls on ParadeTom MorelloEvil Empire · 1996See the chain →
The Battle of Los Angeles cover9 blocks
Guerrilla RadioTom MorelloThe Battle of Los Angeles · 1999See the chain →
The Battle of Los Angeles cover9 blocks
Sleep Now in the FireTom MorelloThe Battle of Los Angeles · 1999See the chain →
Evil Empire cover8 blocks
People of the SunTom MorelloEvil Empire · 1996See the chain →
The Sickness cover9 blocks
Down with the SicknessDan DoneganThe Sickness · 2000See the chain →

Field notes on the DigiTech Whammy

All field notes →
Workflow6 min read

Acoustic Guitar Through a Modeler for Worship: DI, Body EQ, and Feedback

Plugged your acoustic into an HX Stomp or POD Go and it quacks? Turn the amp and cab off and use the modeler as a DI — here's the EQ, compression, and the notch that kills feedback.

By Elena Ruiz
Signal Chain6 min read

Reamping Through the Effects Loop: Capture a Preamp DI, Drive a Power Amp Alone

The loop Send taps your preamp and the Return feeds your power amp — record a preamp DI, then reamp through just the power section and cab. Routing, levels, and the cab-block trap.

By Sean Nakamura
Gear Lab6 min read

Transformer-Isolated vs Active Buffered Splitters: When the Ground Loop Forces the Upgrade

An active buffered splitter with a ground lift clears most stage hum. Here is when only a transformer breaks the loop — and what the phase switch is actually for.

By Nathan Cross