When Premier Guitar documented Jack White’s 2024 touring rig, guitar tech Dan Mancini revealed one of the more audacious pieces of instrument modification in recent rock history. Mancini had taken the circuit board from an Electro-Harmonix Pitch Fork and installed it directly inside the body of White’s sparkle blue Fender Jazzmaster, complete with the required controls. The pedal had been absorbed into the guitar itself. No pedalboard real estate. No patch cables. Just instant pitch-shifting at the flip of a guitar-mounted switch, available the moment White’s fingers hit the strings.
That’s the kind of devotion a piece of gear earns when it’s genuinely exceptional. The EHX Pitch Fork, released in 2014, is a polyphonic pitch shifter that fits in a nano enclosure, runs on 30mA, accepts an expression pedal, handles full chords without glitching, and costs less than most multi-effects units. It does not try to be everything. It does one thing — shift pitch, cleanly and musically, across a three-octave range — and it does it well enough that Jonny Greenwood has kept it on his pedalboard continuously since 2022, and Jack White liked it enough to make it part of the guitar itself.
This is how the Pitch Fork works, who uses it, and where it belongs in your signal chain.
The Context: EHX and the Pitch Problem
Pitch shifting for guitar has always been a technically demanding proposition. Monophonic pitch shifters — the kind that track a single note — can sound reasonably natural on single-line playing, but the moment you play a chord, the algorithm has to make decisions it was never designed to make, and the results can be unpleasant. For most of the 1990s and 2000s, the DigiTech Whammy was the pitch-shifting standard for rock guitarists, and it was monophonic. It worked brilliantly for single-note dive bombs and pitch climbs — The Edge used it to create the swooping atmospherics of “Even Better Than the Real Thing,” and Tom Morello built entire sonic identities around its capabilities. But ask it to handle an open chord and the tracking artifacts made themselves heard.
Polyphonic pitch shifting — the ability to shift every note in a chord simultaneously and accurately — required significantly more processing power. As DSP chips became cheaper and more capable through the 2000s and early 2010s, polyphonic pitch shifting in a compact form factor became achievable. Electro-Harmonix, already well established with their nano-format pedals, brought the Pitch Fork to market in 2014. It was polyphonic from the ground up, which meant it could handle chords — barre chords, open voicings, complex jazz shapes — without the tracking failures that plagued earlier pitch shifters.
The timing was right. The nano enclosure meant it took up minimal board space. The 30mA current draw made it one of the most power-efficient digital pitch pedals ever built. The 9V battery option meant it could run at fly gigs with no power supply at all. And the EXP jack meant that players who wanted expression-pedal pitch sweeps — the Whammy experience — could have it without buying a dedicated whammy pedal. The Pitch Fork was not trying to replace the Whammy. It was offering something different: a compact, polyphonic pitch tool with optional expression control, at a price point accessible to working musicians at every level.
Specifications
Famous Players
Jack White — The Pitch Fork Inside the Guitar
Jack White has never been content with conventional solutions. His 2024 touring rig, documented in full by Premier Guitar’s John Bohlinger in October 2024, included a sparkle blue Fender Jazzmaster that White’s tech Dan Mancini had modified with the circuit board from an Electro-Harmonix Pitch Fork installed directly inside the guitar body. The pedal’s controls were integrated into the instrument itself, allowing White to access pitch shifting without any signal chain complexity — the effect was simply part of the guitar.
This speaks to something beyond casual pedal use. When a guitarist takes the time to have a pedal’s internals physically installed in an instrument, they have concluded that the effect is load-bearing — essential enough to the way the instrument sounds that it belongs in the same physical object. For White, the Pitch Fork is not a color he sometimes reaches for. It is part of what the Jazzmaster is.
The Jazzmaster in question was loaded with Tim Shaw Firebird pickups and took .011–.049 strings. The Pitch Fork guts were fitted alongside the required controls in what Mancini described as “redneck engineering” — executed at the highest level of sonic intentionality. It is the most committed deployment of the Pitch Fork in documented rock history.
Jonny Greenwood — The Pitch Fork in the Signal Chain Since 2022
Jonny Greenwood of Radiohead and The Smile has run the Electro-Harmonix Pitch Fork on his pedalboard continuously since the Fall 2022 rehearsals for The Smile’s touring cycle. Documented in detail by the primary-source archive thekingofgear.com, with photographic evidence from multiple tours and sessions, Greenwood’s Pitch Fork use is one of the most thoroughly verified in contemporary guitar documentation.
The Fall 2022 board — Greenwood’s most expansive Smile configuration to date — placed the Pitch Fork after his compressor and fuzz, before his Earthquaker Devices Pyramids flanger. Notably, Greenwood ran a dedicated expression pedal (an Electro-Harmonix Single Expression Pedal) assigned specifically to the Pitch Fork, allowing him to sweep pitch dynamically during performance rather than using fixed intervals alone. The signal chain from the Fall 2022 Tour: Telenorida/Tortenmann Kompressor → Earthquaker Devices Hizumitas fuzz → ToadWorks True-Bypass → EHX Pitch Fork → Earthquaker Devices Pyramids flanger → EHX Freeze → Boss SD-1 → Boss DD-200 → Akai Headrush → Boss RE-202 → Fender Super Reverb.
This chain tells a clear story about how Greenwood uses the Pitch Fork: pitch shifting happens upstream of all modulation and time-based effects, which means the shifted signal is what gets flanged, frozen, delayed, and echoed. The Pitch Fork is not an accent — it is a fundamental tone generator whose output is then sculpted by everything downstream.
The Summer 2023 North American tour, documented via a photo taken at Philadelphia’s Franklin Music Hall on July 8, 2023, showed the same arrangement: MXR Dyna Comp → Hizumitas fuzz → Telenorida TA-24 Treble Booster → EHX Pitch Fork → Earthquaker Devices Pyramids flanger → EHX Freeze → Boss SD-1 → Boss DD-200 → Headrush → RE-202 → Fender Super Reverb. The Freeze and the Pitch Fork are neighbors on Greenwood’s board — the pitch-shifted layer frozen into sustained infinity, then delayed and echoed into the ambient wash that defines The Smile’s guitar sound.
By Summer 2024, Greenwood had updated the board slightly: the Origin Effects Cali76 Compact Deluxe replaced the Dyna Comp as the primary compressor, and the Pitch Fork appeared after the compressor but before the Hizumitas — a slightly different placement that still keeps pitch at the front of the processing chain. He ran this configuration on both his main and backup boards, meaning the Pitch Fork was considered essential enough to duplicate. Also available: Jonny Greenwood gear guide.
Greenwood’s use of the expression pedal with the Pitch Fork is worth noting separately. By assigning the EXP jack, he gains a dynamic pitch sweep — moving from unison to a shifted interval (or through a glissando range) with foot pressure rather than being locked to a fixed switch position. This transforms the Pitch Fork from a static pitch-adding tool into a gestural instrument: he can lean into pitch shifts and release them in real time, in a way that a fixed-interval pedal cannot replicate. The KEXP session from December 2022 actually shows the board without the expression pedal for that stripped-down format, which confirms the expression pedal is a deliberate touring addition, not a default.
Tone Recipes and Settings
Twelve-String Illusion
Set the Shift switch to the octave position (P8). Set Mode to DUAL (both up and down simultaneously — use only the UP signal by setting Blend so the down-shifted signal is minimal, or run DUAL at moderate Blend). Blend at 40–60%. The octave-up signal mixed with your dry signal creates the fundamental illusion of a 12-string guitar: every string doubled an octave above itself, which is exactly how a 12-string is strung. This works best with clean or lightly broken-up amp sounds. Fingerpicking and arpeggio patterns are especially convincing. Run into a room reverb for full acoustic shimmer.
Power Chord From One String
Set Mode to UP. Shift to P5 (perfect fifth up). Blend at 60–80%. Play single notes. The Pitch Fork generates the fifth above each note, creating the harmonic interval of a power chord from a single string. Useful for fast single-note runs that need to sound heavier than a single note allows, or for bass players who want to imply chord movement on melodic lines. Pair with a fuzz or overdrive after the Pitch Fork for maximum weight.
Sub-Octave Bass Layer
Set Mode to DOWN. Shift to P8 (octave down). Blend at 25–40%. The octave-down signal adds a bass-register layer beneath your dry guitar, filling out the low end in a way that is particularly useful in guitar-heavy formats without a dedicated bass player. Works on single notes and simple chord inversions — very complex voicings can produce murkiness when an octave-down signal is added. Compare with a dedicated octave pedal for pure sub-bass tracking; the Pitch Fork’s version is musical and sits in the mix rather than dominating it.
The Jonny Greenwood Shimmer Spread
Set Mode to DUAL. Shift to M3 (major third) or P5 (fifth). Blend at 35–50%. Feed the output into a flanger or chorus, then into a sustainer (Freeze), then into delay. This approximates the tonal logic of Greenwood’s The Smile setup: the Pitch Fork generates a spread of intervals, the flanger adds animated movement, the Freeze captures and holds the shimmer, and the delays spread it across the stereo field. The combination produces atmospheric, slowly evolving guitar layers that are indistinguishable from synthesizer pads at the right blend settings.
Whammy Sweep with Expression Pedal
Connect a standard expression pedal (Boss EV-30, Moog EP-3, or similar) to the EXP jack. Set Mode to UP. Shift to P8 (octave up). Blend at 100%. Heel-down = dry signal. Toe-down = full octave up. The expression pedal sweeps through the range from unison to the selected interval, giving you continuous pitch control — the Whammy experience in the Pitch Fork’s more compact format. With Blend at lower settings, you sweep between dry and partially shifted, which produces a more subtle pitch-rise effect useful in ambient contexts.
Momentary Octave Stabs
Set the Latch button to Momentary mode. Set Mode to DOWN, Shift to P8 (octave down). Press and hold the footswitch only on the notes or chord hits where you want the bass octave. Release and the pedal returns to bypass. Momentary mode transforms the Pitch Fork into a performance effect: you play normally, and selectively dive into the octave-down register for specific moments rather than running the effect continuously. This is a powerful technique for live performance — it requires no tap dancing because you hold the switch exactly as long as you want the effect.
Detuned Alternate Tuning Simulation
Set Mode to DOWN. Shift to m3 (minor third) or M2 (whole step). Blend at 100%. Playing in standard tuning now sounds as if the guitar is tuned down by the selected interval. A whole step down sounds like the guitar is in D standard. A minor third down approximates C# standard. This is a useful technique for playing songs that require alternate tunings in a live set without stopping to retune — though the polyphonic pitch shifting is not a perfect substitute for actually retuning, it is good enough for most performance contexts at moderate Blend settings.
Signal Chain Placement
The Pitch Fork contains a buffer in its bypass circuit, meaning it is always actively present in your signal path — even when bypassed, it is conditioning your signal. This is relevant for players using germanium fuzz pedals before the Pitch Fork, which can be sensitive to the input impedance presented by a buffered pedal. In most situations this is a non-issue, but if you are pairing a vintage-style germanium fuzz with the Pitch Fork, test the combination carefully and place the fuzz first in the chain if the tone thins out.
For the effect itself, the most musically useful position is generally early in the chain — after tuner and compressor, but before overdrive, modulation, and time-based effects. This is the logic Greenwood uses: compress the signal first for consistent tracking, then shift pitch, then add modulation and delay to the shifted result. The pitch-shifted signal becomes the raw material for everything downstream. Running drive before the Pitch Fork means the drive’s harmonic content is part of what gets tracked and shifted — which can be interesting or problematic depending on the drive pedal and the interval being shifted.
The EXP jack accepts a standard TS (tip-sleeve) cable from a conventional expression pedal. The heel-down position outputs the dry signal; toe-down outputs the fully shifted signal. Expression pedals with an adjustable range pot can set a narrower sweep window than the full interval range, allowing you to create custom partial-sweep effects. Greenwood’s use of a dedicated expression pedal for the Pitch Fork on his 2022 touring board shows how fully the pedal can be integrated into a performance workflow when expression control is part of the design.
Placement relative to the EHX Freeze: placing the Pitch Fork before the Freeze means you can freeze a pitch-shifted layer — freeze an octave-up shimmer, for instance — and hold it as a static harmonic drone while playing dry notes over the top. This is exactly the Greenwood technique: the Pitch Fork generates the interval, the Freeze captures it, and the result is a sustained harmonic layer that sounds nothing like a single guitarist playing.
Pitch Fork vs. the Competition
DigiTech Whammy
The Whammy is the original expression-pedal pitch shifter and a canonical rock effect — The Edge, Tom Morello, and hundreds of others built sounds around it that would not exist without it. But the Whammy is monophonic and large. The Pitch Fork is polyphonic and nano-sized. The Whammy’s expression pedal is permanently attached and always active; the Pitch Fork works as a fixed-interval pedal with expression as an optional addition. Neither replaces the other. Players who primarily want the continuous pitch-sweep experience with a dedicated rocker pedal should choose the Whammy. Players who want a fixed-interval polyphonic pitch shifter that can optionally accept expression control — and who want it in a nano enclosure at 30mA — choose the Pitch Fork.
Jonny Greenwood’s own career illustrates this transition cleanly. In Radiohead’s early years through the In Rainbows era, he ran a DigiTech Whammy WH1 on his board as his primary pitch tool. By 2022, with The Smile, the Whammy was gone and the Pitch Fork had taken its place — supplemented by an EQ Devices Organizer on the Summer 2022 tour and then settled as the sole pitch-shifter from Fall 2022 onward. The shift from Whammy to Pitch Fork represents a compositional evolution: from expression-pedal pitch drama to polyphonic pitch integration.
Boss PS-6 Harmonist
The Boss PS-6 offers harmony modes (preset scales), S-bend (smooth pitch rise from lower note), and detune alongside pitch shifting — a wider feature set than the Pitch Fork. The PS-6 is also larger and draws more current. For players who specifically need scale-aware harmony (the PS-6 can generate harmonies that stay in key), the PS-6 offers something the Pitch Fork does not. For players who want pure polyphonic pitch shifting with optional expression control in a minimal enclosure, the Pitch Fork is the cleaner solution.
Electro-Harmonix Pitch Fork+
EHX released the Pitch Fork+ as an updated successor, adding more interval options, a dry/wet toggle for running the effect in parallel, and expanded expression pedal behavior. The original Pitch Fork has been discontinued but remains widely available on the used market. For players who need the additional features, the Pitch Fork+ is the logical choice. For players who want the classic Pitch Fork simplicity — eleven intervals, three modes, one knob, one switch — the original is a better fit, and the used pricing makes it one of the best-value pitch tools available.
EHX Nano Sibling Comparison
The Pitch Fork shares its enclosure with the EHX Freeze, the Holy Grail Neo, and the Canyon Delay & Looper. Its 30mA current draw makes it the most power-friendly of the group — the Canyon and Freeze draw 150mA and 140mA respectively, making them challenging for standard isolated power supplies, while the Pitch Fork runs on virtually any 9V output. It also uniquely offers battery operation, making it genuinely portable in a way the Canyon and Freeze are not.
Buying Guide
The original Electro-Harmonix Pitch Fork is discontinued by EHX but widely available new-old-stock and used. New-old-stock units appear at $148–$198 from retailers with remaining inventory. Used units in excellent condition typically run $80–$120, making them one of the most accessible polyphonic pitch shifters on the secondary market. The condition check is straightforward: play chords through all three modes across several Shift positions and verify clean polyphonic tracking. Run an expression pedal through the EXP jack and confirm the sweep is smooth and continuous. Check the Latch button operation in both modes. There are no known failure points specific to the Pitch Fork; digital pedals of this era are generally reliable.
If you want the current production version, the Pitch Fork+ is the successor, with a street price in the $149–$185 range new. The + adds functionality but removes the simplicity of the original’s focused design. Players who know what they want from a pitch shifter and want the most direct interface tend to prefer the original; players who want future flexibility tend to prefer the +.
Living with the Pitch Fork
The 30mA current draw is the Pitch Fork’s most practically significant specification. Nearly every pedalboard power supply — including the budget units with 100mA isolated outputs — can power the Pitch Fork comfortably. This is a meaningful contrast with the EHX Canyon (150mA) and Freeze (140mA), both of which require dedicated high-current outputs or the included adapter. The Pitch Fork can share an output with another low-draw pedal on a dual-output supply and never cause a brownout.
The 9V battery option is a genuine feature, not a formality. At 30mA, a fresh 9V alkaline battery will power the Pitch Fork for several hours of continuous use — more than adequate for fly gigs, acoustic sessions, or recording setups where a power supply is inconvenient. The battery compartment is accessible from the bottom plate without tools. EHX’s decision to keep the Pitch Fork within battery-compatible power requirements while delivering polyphonic digital pitch shifting is a design achievement worth acknowledging.
The Latch/Momentary distinction is the Pitch Fork’s most underused feature. The default Latch mode behaves like any standard footswitch — press to engage, press to bypass. Momentary mode inverts this: the effect is active only while the footswitch is physically depressed, and returns to bypass the moment you release. Momentary mode enables a category of technique that Latch mode cannot replicate: selective, timing-precise pitch effect activation tied to the duration of your foot pressure rather than a binary on/off state. For octave stabs, momentary shimmer hits, or brief pitch-rise accents at the end of a phrase, Momentary mode is the more musical option. Switching between the two requires a long press of the Latch button — set it for each context rather than leaving it in a default.
The EXP jack is passive in the sense that it does not power the expression pedal — it reads the wiper position of the pedal’s potentiometer via a TS connection. Standard expression pedals that use a 10k–50k linear or audio taper pot work correctly. Boss expression pedals (EV-30, EV-5), the Moog EP-3, and EHX’s own Single Expression Pedal (the unit Greenwood uses) are all compatible. Check your expression pedal’s documentation for TS vs. TRS requirements; the Pitch Fork uses TS (mono). If a TRS expression pedal is connected, the behavior may be unpredictable depending on which ring connection the pedal wires.
Polyphonic tracking quality is affected by the complexity of the chord and the interval being shifted. Octaves and fifths track cleanly on virtually any chord voicing. Minor and major thirds in DUAL mode on dense six-string voicings can occasionally produce brief tracking artifacts on fast chord changes, particularly in low registers where harmonic complexity is greatest. In practice, this is rarely a problem in live performance contexts at reasonable volumes. For studio work requiring perfect tracking on every chord, testing your specific voicings before committing to a part is recommended. The Pitch Fork handles guitar significantly better than it handles bass in very low registers — not because of a design flaw, but because the fundamental frequencies are harder for any polyphonic pitch algorithm to resolve cleanly.
FAQ
What is the difference between the original Pitch Fork and the Pitch Fork+?
The original Pitch Fork offers 11 interval positions, three modes (UP, DOWN, DUAL), a Blend knob, and an EXP jack. The Pitch Fork+ adds more interval options, a dry/effect switch for parallel operation, and expanded expression behavior. The original has been discontinued; the Pitch Fork+ is the current production model. The original remains widely available used and is preferred by players who value its simpler, more direct interface.
Does the Pitch Fork work on guitar chords, or only single notes?
The Pitch Fork is polyphonic — it was designed to shift chords cleanly. This distinguishes it from older monophonic pitch shifters and is one of its primary advantages. It handles standard guitar voicings well across most of the interval range. Very dense, low-register chord voicings on intervals like thirds can occasionally show slight tracking artifacts, but in typical playing situations it functions reliably on chords of any complexity.
Can the Pitch Fork replace a DigiTech Whammy?
It depends on how you use the Whammy. If your primary use is expression-pedal pitch sweeps with a rocker pedal, the Whammy’s integrated design is the better tool. If you want fixed-interval pitch shifting with optional expression control in a compact, low-power enclosure, the Pitch Fork is the better choice. The two are complementary rather than directly substitutable. Players who have both tend to keep both — the Whammy for expression-forward pitch drama, the Pitch Fork for always-on interval generation.
What expression pedal works with the Pitch Fork?
The Pitch Fork’s EXP jack is a standard TS connection. Compatible expression pedals include the Boss EV-30, Boss EV-5, Moog EP-3, Dunlop DVP1 Volume (X), and Electro-Harmonix Single Expression Pedal. Verify that your expression pedal outputs on the tip of a TS connection, not the ring of a TRS — some expression pedals use TRS and may not operate correctly. Boss-format expression pedals and EHX expression pedals are confirmed compatible.
How does Latch mode differ from Momentary mode?
In Latch mode, one press of the footswitch engages the effect and it stays on until you press again — standard footswitch behavior. In Momentary mode, the effect is active only while the footswitch is held down and returns to bypass the instant you release. Momentary mode allows precise, duration-controlled pitch effects: hold for a brief octave hit on one note, release immediately. Switch between modes with a long press of the Latch button on the right side of the pedal.
Does the Pitch Fork work with bass guitar?
Yes, and Equipboard’s FAQ for the Pitch Fork explicitly notes it. It functions well on bass in the upper register and for single-note playing. Very low bass fundamentals (open B string on a 5-string, for instance) can be more challenging for the polyphonic algorithm to track cleanly, and the results may vary by interval. The octave-up mode on bass produces a guitar-register layer that can be useful for bass-and-guitar-in-one arrangements. Test your specific bass, tuning, and playing style before committing to a live setup.
What are all the pitch intervals available on the original Pitch Fork?
The 11-position Shift switch covers: minor second (1 semitone), major second (2 semitones), minor third (3), major third (4), perfect fourth (5), tritone/augmented fourth (6), perfect fifth (7), minor sixth (8), major sixth (9), minor seventh (10), major seventh (11), perfect octave (12), two octaves (24), and three octaves (36) — with the DUAL mode producing both up and down versions simultaneously. The three-octave range up or down covers every practical pitch-shifting application in guitar and bass performance.
Where should the Pitch Fork go in my signal chain?
The standard placement is after tuner and compressor, before overdrive and modulation effects. This ensures the pitch shifter receives a clean, dynamics-controlled signal for accurate tracking, and the shifted output is then colored by everything downstream. Greenwood’s placement — compressor first, then Pitch Fork, then fuzz and flanger — follows this logic with one notable wrinkle: the fuzz comes after pitch shifting, meaning the fuzz processes the shifted signal rather than the raw guitar. Either arrangement is valid and produces different results. Experiment with fuzz before and after the Pitch Fork to find which better serves your sound.