EarthQuaker Devices Afterneath V3: The Reverb Algorithm Nobody Meant To Write

Most great pedals are the result of somebody chasing a sound they already had in their head. The Afterneath is not one of those pedals. According to EarthQuaker Devices’ own account — told at length in an eighty-minute retrospective film the company released in March 2022 — founder and lead designer Jamie Stillman stumbled onto the algorithm by accident while messing with code that was supposed to be doing something else entirely. He heard what it did, and instead of fixing the mistake he built a pedal around it.

That origin explains almost everything about how the Afterneath behaves. It does not model a spring tank. It does not model a plate or a hall or a room. It does not model anything. It generates a swarm of very short digital delay lines and then hands you a knob that controls how far apart those lines sit in time. Squeeze them together and your ear reads the result as reverb. Pull them apart and the same circuit turns into a scattered, stuttering, ping-ponging delay that no reverb pedal has any business producing. There is no mode switch that does this. It is one continuous sweep between two entirely different effects, and the pedal never tells you where the boundary is.

Twelve years and three versions later it is still in the catalogue, still $199 list at launch price and still one of the two or three pedals people name when they are asked what makes EarthQuaker EarthQuaker. It has been on stages with Chelsea Wolfe, Boris, Converge, Deafheaven, Fu Manchu, My Chemical Romance’s Frank Iero and Wolfgang Van Halen. Steve Albini had one. It has also been mis-attributed to at least one very famous player in ways worth untangling, which we will do below.

This is a feature, not a review. We are not scoring it. What follows is where the Afterneath came from, what its seven controls genuinely do, which players have actually been documented using one and how strong the evidence is in each case, the settings worth stealing straight from EarthQuaker’s own demonstrations, how it stacks up against the reverbs you are probably cross-shopping, and the handful of practical facts that decide whether it belongs on your board.

Akron, 2014: An Accident That Became A Flagship

The EarthQuaker Devices story — Jamie Stillman, a touring musician in Akron, Ohio who put down the guitar and picked up a soldering iron, and the company that grew from a kitchen table into one of America’s largest pedal builders without ever leaving town — is told in full in our feature on the EarthQuaker Devices Hoof Fuzz, and we will not repeat it here. The shape of the dirt catalogue sits in the Acapulco Gold piece, the company’s long argument with the Tube Screamer in the Palisades feature, and its best-loved overdrive in the Westwood one.

What matters for the Afterneath is a narrower thread: EarthQuaker’s relationship with digital signal processing, and how quickly it went from defensive to confident.

When the Dispatch Master launched in 2011, the press release literally had to talk customers down off a ledge — “Even though it is a DSP based effect, the sound is warm and full. No sterile lifeless tones here!” Three years later the Afterneath arrived with no such apology, because it was not trying to sound like anything analogue. It was trying to sound like a cave that was slightly alive. By 2016 the company was building the Avalanche Run on a proprietary DSP platform and had stopped worrying about it altogether.

The Wizard And The Cave

You cannot write about this pedal without mentioning the artwork and the copy, because EarthQuaker made both load-bearing. Matt Horak’s illustration puts a wizard bursting out of an ethereal cavern, and the product page is written as a tabletop role-playing encounter. You are the wizard. Your guitar signal is the cave. “Do you go inside? Roll a D20 to proceed!” The seven controls are described as spells you cast. It is silly, it is committed, and it is also — this is the clever part — an accurate user manual. The Afterneath really does reward the mindset of poking a strange environment to see what it does, and it really does punish the mindset of dialling in a preset and never touching it again.

The narrative also contains the single best one-line description of the circuit that anybody has written, EarthQuaker’s included: the reverberations of your voice in the cave “are in fact a swarm of short digital delays which may be used to create wild and cavernous reverbs, or scattered, short, rhythmic delays with bizarre characteristics.”

V1, V2, V3: The Version Map

Three versions in twelve years, and the differences are not cosmetic. Getting them straight matters if you are buying used, because all three still circulate and the price spread between them is real.

V1 (2014). The original. Six knobs — Length, Diffuse, Dampen, Drag, Reflect, Mix — and a mechanical true-bypass footswitch. No expression jack. No modes. The Drag knob is fixed and unquantized; whatever you set by hand is what you get. This is the version that made the pedal’s reputation, and plenty of long-term owners argue it is still the purest expression of the idea, because there is nothing to think about except the six knobs.

V2 (November 2016). Part of a four-pedal batch update that also covered the Dispatch Master, the Acapulco Gold and the Speaker Cranker. The headline change was EarthQuaker’s soft-touch relay switching, which is silent onstage and enables Flexi-Switch operation — tap once for standard latching on/off, or hold the switch down for as long as you want the effect and it drops out the moment you release. There is a genuine conflict in the contemporary reporting about whether the Afterneath also received top-mounted jacks in this revision. Some coverage at the time described all four pedals as receiving new enclosures and top-mounted input and output jacks; other reporting drawn from the press release describes the top-jack change as applying only to the Dispatch Master and Speaker Cranker, with the Afterneath and Acapulco Gold getting the switching alone. We have not been able to resolve this from primary sources and we are not going to pretend otherwise. If jack placement matters to your board layout, ask the seller for a photo of the sides rather than trusting a version number.

V3 (announced NAMM, 20 January 2020; in stores from mid-April 2020, $199). This is the big one. Three substantive additions:

• An expression/CV input on the side of the enclosure, which takes control of the Drag parameter. It wants a 50k expression pedal — EarthQuaker specifically recommends the Mission Engineering EQD-1 — and it will work with a standard 10k pedal, but you will not get the full sweep of each mode. The jack also accepts control voltage, 0–5V, with tip as wiper, ring at 5V and sleeve at ground.
• The Mode control, a small knob sitting just under Drag, which changes what Drag does across nine settings. More on this below, because it is the thing people misunderstand most.
• Selectable tails / no tails. The pedal ships in tails mode. To switch, hold the footswitch down while inserting the power cable; the LED flashes three times to confirm. That is a trick worth writing on a piece of tape, because nobody remembers it.

There is also a visual tell that makes V3 identifiable from across a room, and it is not just the new graphics: on the V3, the Reflect and Drag knob positions were swapped. If you are trying to date a pedal from a live photo or a Rig Rundown freeze-frame, that swap plus the small Mode knob is the giveaway. Guitar Player’s Christopher Scapelliti reviewed the V3 on 19 May 2020 and gave it a Cons list consisting of the word “None,” which is not something that magazine hands out casually.

The 2022 Retrospective Edition

In March 2022 EarthQuaker put out a limited run of the Afterneath in a brushed-metal “Retrospective” finish, in both pedal and Eurorack formats, alongside the eighty-minute film about how the algorithm came to exist. The Eurorack module — which is a genuinely different device, with a dedicated send and return for the Reflect feedback path, nine controls, four CV-addressable parameters each with its own inverting attenuator, and a dry-kill switch the pedal does not have — carried an RRP of £239 against the pedal’s £199. Keep the module in mind. It becomes relevant when we get to the Thom Yorke question.

Specifications

One Spec Correction Worth Making

You will find the Afterneath V3 described as true bypass in a number of retail listings and aggregator descriptions — including, amusingly, in the same page on one large gear database whose own spec table three paragraphs earlier correctly says “Buffered with Flexi-Switch.” It is not true bypass. EarthQuaker’s own documentation is unambiguous: the pedal uses electronic buffered bypass, the buffer is always active, and it requires power to pass signal at all. Pull the plug mid-set and you do not get your dry tone back — you get silence. That is a normal consequence of relay switching and it is the same on the Dispatch Master and the Avalanche Run, but people are still caught out by it.

What The Seven Controls Actually Do

EarthQuaker’s own house blog once made an observation about the Afterneath that no other pedal in the line gets: the sonic possibilities are so open-ended that the company does not print suggested settings in the manual, which it normally does. You are expected to carve your own path. That is charming, and it is also the single biggest reason people bounce off this pedal in the first week. So here is the map.

Drag: The Only Knob That Matters Until It Isn’t

Drag controls the amount of separation between the individual delay lines. That is the whole trick. Fully clockwise, the lines bunch tightly together and your ear integrates them into something it recognises as reverb. Counter-clockwise, they pull apart, and at the extreme you get an odd, short, stuttering, ping-pong delay — rhythmic, articulate and completely unlike any reverb tail.

What makes it feel alive rather than merely adjustable is that turning Drag in real time drags the signal itself, in the same way the varispeed knob on a tape machine bends whatever is already on the tape. It is not a parameter change applied to future repeats. It warps what is already sounding. This is why the V3’s expression input is a bigger deal than a spec-sheet line suggests: it puts that warp under your foot.

If you are new to the pedal, do this before anything else. Set Length and Reflect around 10 o’clock, Diffuse at noon, Dampen at noon, Mix at 11 o’clock. Play one chord. Now sweep Drag slowly from full counter-clockwise to full clockwise and listen to the effect change species. Everything else on the pedal is a modifier of that one journey.

The Nine Modes, And The Thing People Get Wrong About Them

The Mode knob does not add nine reverb algorithms. It changes how Drag responds — and, crucially, it is mostly aimed at what happens when Drag is being swept by an expression pedal or a control voltage. The LED changes colour so you know where you are.

• 1. Unquantized — smooth, stepless response across the range. The V1/V2 behaviour.
• 2. Unquantized with slew — the same, but with a musical lag. Drag trails behind the knob or CV change and then catches up, exactly like riding the varispeed on a vintage British tape delay. For many players this is the mode that sells the pedal.
• 3. Unquantized volt/octave — stepless but scaled to the 1V/octave curve, so you can play melodic material with the buffer contents or treat self-oscillation like a voltage-controlled oscillator.
• 4. Chromatic scale — quantized to chromatic. Bell-like stepped sweeps.
• 5. Minor scale
• 6. Major scale (Lydian)
• 7. Pentatonic scale — modes 5 to 7 tune the delays and reverb to the named scale as you sweep. Guitar Player found these “fantastic for making tuneful, synthesizer-like arpeggiations out of the delays.”
• 8. Octaves & Fifths — everything but octaves and fifths is omitted. The most consonant of the quantized options.
• 9. Octaves — octaves only. The safest mode for building drones, and the one EarthQuaker’s own ambient demonstration uses.

The honest caveat, and it appears in owner discussions constantly: without an expression pedal or a CV source, the Mode knob’s practical impact is limited. It still changes the tonality of the other controls somewhat, and modes 8 and 9 will subtly re-pitch the tails even with Drag static. But if you buy a V3 over a V2 purely for the modes and then never plug anything into the expression jack, you have paid for a feature you are not using. That is not a knock on the pedal. It is a purchasing decision you should make with your eyes open.

Length

Decay time, from a short room to an effectively endless plate. EarthQuaker’s own guidance is blunt about the trap here: if you are setting and forgetting, do not make Length too long, because the accumulating reverberations turn into a heavy ringing tone. And if what you are playing is polyphonic, busy and mid-tempo or faster, those reverberations gather fast.

Diffuse

The spread of the reverb — how sharp or soft the individual reflections are. Counter-clockwise gives you attack, definition and a stuttering sputter of distinct early reflections. Clockwise smears them into wash. Think of it as focus, not tone.

Dampen

A tone control that runs backwards from what your hand expects. Counter-clockwise is brighter; clockwise is darker. The physical metaphor EarthQuaker uses is the hardness of the cavern walls. In practice, if the Afterneath sounds metallic and clangy to you, your instinct will be to turn Dampen down, and that will make it worse. Turn it up. Around noon takes off the worst of the high-end glare without killing the shimmer.

Reflect

Feedback and regeneration — the depth of the cave. Clockwise adds echoes and wash, and at the far end the pedal self-oscillates into a drone. Length and Reflect interact multiplicatively rather than additively, and this is where people accidentally make unpleasant noise. EarthQuaker’s own advice: watch how the two behave together, because if either is set high the other will tip you into ringing that most listeners hate.

Mix

Wet/dry balance, with an important asymmetry: the Afterneath does not go fully wet. Instead, as you raise Mix, it progressively lowers the level of the dry input signal to create the appearance of a fully wet reverb. For guitar this is almost always what you want. For anyone trying to use it as a pure send effect in a studio chain it is a genuine limitation, and it is why the Eurorack module got an explicit dry-kill switch that the pedal does not have.

Famous Players: What Holds Up, And What Doesn’t

The Afterneath has one of the better-documented user lists in the EarthQuaker catalogue, largely because EQD themselves have been filming players for a decade and tagging the footage by pedal. We have separated the evidence into tiers, because they are not equally strong, and we have flagged the ones that fall apart.

Tier One: On Camera Or On The Record, With The Player’s Own Words

Frank Iero (My Chemical Romance, Leathermouth, L.S. Dunes) is the strongest single testimonial the pedal has, because he named it, named its partner and explained why. In a statement carried by EarthQuaker: “EarthQuaker effects are a creators’ pedal company, the nuance and attention to detail really puts you in control of the effects as opposed to the other way around. I have Plumes and Afterneath on my board at every show. I love how they play off of each other. I really love gear that inspires, and I can write a new riff or song every time I put an EarthQuaker effect in my chain.” That Afterneath-plus-Plumes pairing is worth noting — a transparent-ish overdrive feeding an unpredictable reverb is a very different proposition from stacking two weird pedals, and it is a large part of why the Afterneath works in a punk context at all.

Carmen Vandenberg (BONES UK) demonstrated the pedal on camera in EarthQuaker’s own Board To Death series, discussing her evolving board and citing the Afterneath specifically for its otherworldly reverb.

Takeshi (Boris) appeared in Board To Death Ep. 17, 16 August 2018, with a board EQD described as “stuffed to capacity with boutique fuzz pedals, one-off noisemakers, Afterneath, Bit Commander, and Palisades,” running into a wall of Sunn and Orange amplifiers. Boris are close to an ideal use case: enormous, slow, tonally maximalist music where a reverb that behaves erratically is a feature.

Justin Pearson and Joey Karam (the Locust, Dead Cross, Retox, Head Wound City, One Day As A Lion) in Board To Death Ep. 16, 2 August 2018, with the Afterneath alongside a Bit Commander, Bellows and Rainbow Machine. Pearson’s line in that piece — “It’s not musical and I like that” — is arguably the Afterneath’s mission statement.

Chelsea Wolfe, filmed at the Sargent House compound in Los Angeles for the EarthQuaker Session on “Survive,” published 2 February 2017, with the Afterneath among Speaker Cranker, Talons, Organizer and Abyss.

Kurt Ballou (Converge, GodCity Studio), in EQD’s Studio Series feature of 16 December 2016. Ballou’s studio has produced records for High On Fire, Helms Alee, Skeletonwitch, the Dillinger Escape Plan and Torche, which means the Afterneath has almost certainly ended up on more heavy records than its user list suggests.

Anthony Pirog (the Messthetics), interviewed by EarthQuaker on 5 May 2018. The Messthetics pair Pirog’s jazz-inflected virtuosity with Fugazi’s rhythm section — Joe Lally and Brendan Canty — and the Afterneath appears in a context that is improvisational rather than textural, which is unusual for this pedal and worth seeking out.

Whitney Petty (Thunderpussy), in EQD’s September 2017 interview, using the Afterneath alongside a Disaster Transport SR, Acapulco Gold, Organizer and Terminal. Petty counts Pearl Jam’s Mike McCready as a documented supporter of the band, and started out playing with Deerhunter.

Jonathan Nuñez (Torche), in EQD’s Roadie’s Corner of 22 July 2019, discussing the board behind Admission — Afterneath alongside Arpanoid, Avalanche Run, Disaster Transport SR and Space Spiral. Torche are a bass-forward band and Nuñez runs his own amp company, which makes his endorsement a useful data point for anyone wondering whether the Afterneath survives low frequencies. It does.

Taka Tozawa (Deltron 3030), Show Us Your Junk! Ep. 3, 12 June 2017. Mourning [A] BLKstar, EarthQuaker Session, 7 October 2019. Jaye Jayle, EarthQuaker Session Ep. 26, 5 May 2020. RYAT, EarthQuaker Session, 22 November 2017, running a Fender Rhodes rather than a guitar through it. Uno Lady (Christa Ebert), EarthQuaker Session, 13 March 2017, using it on looped voice. Warren Walker of the Kandinsky Effect, 17 April 2017, running it on saxophone. That last cluster is the useful one: four of EQD’s own films show the Afterneath processing something that is not a guitar, which is the clearest possible signal about what the pedal is for.

Tier Two: Photographic And Video Evidence, Independently Sourced

Steve Albini — the Big Black, Rapeman and Shellac guitarist and, far more consequentially, the recording engineer behind an enormous portion of American underground music until his death in May 2024 — is documented with an Afterneath V3 in video footage. Given how vocal Albini was about hating gear mystique and how he approached recording, an EQD reverb in his orbit is a small but genuinely interesting footnote.

Wolfgang Van Halen has an Afterneath V3 visible on his pedalboard in Guitar World photography. A note on attribution, because this is exactly the kind of thing gear databases get wrong: the aggregator that catalogues this entry files him under the band “Van Halen,” which is where his name comes from but is not the band whose records he makes. His own project is Mammoth, and the board in question is a Mammoth board. His father’s rig is a separate and much longer story, covered in our Eddie Van Halen guide.

Kerry McCoy (Deafheaven) — identified in video “next to the Grand Orbiter at 6:01,” with the observer noting “It’s the v3 based on the graphics,” which is precisely the right way to date one of these. Deafheaven’s blackgaze is close to the platonic use case for an Afterneath.

Bob Balch (Fu Manchu), shown with the pedal on EarthQuaker’s own site — so arguably Tier One. Lennart Bossu (Oathbreaker), documented in a Premier Guitar Rig Rundown. Mercedes Arn-Horn (Softcult), on video, using it as her second reverb. King Princess, from a pedalboard photograph, with the Afterneath sitting next to an EQD Sea Machine. Ella Feingold, from an Instagram post in which she thanks EarthQuaker and hashtags the pedal, with the enclosure graphics matching V3. Emily Hopkins, the harpist, running a Harmonious Monk through an Afterneath in a demo video — another non-guitar data point.

The Thom Yorke Question, Which Does Not Resolve The Way The Databases Say

Search for Afterneath users and the first name you will hit is Thom Yorke, on the strength of a single pedalboard photograph and a caption asserting the pedal is visible. We went looking for corroboration and found something more interesting than a simple yes or no.

Yorke is a genuine and long-standing EarthQuaker customer — that part is not in dispute. The exhaustively documented gear archives covering Radiohead and the Smile record him using an EQD Hoof fuzz, a Plumes, a Blumes for bass, a Grand Orbiter V3 phaser, a Disaster Transport and an Astral Destiny across the Smile’s 2022 and 2024 tours. What those same archives do not show is an Afterneath pedal on his board.

Where an Afterneath does appear in Yorke’s world is the Eurorack module, housed in a Doepfer suitcase case as part of the front-of-house effects rig that Sam Petts-Davies operated for Yorke’s solo ‘Everything’ tour. That is a real, documented Afterneath in a real Thom Yorke production — but it is a different physical device, in a different format, being played by a different person, at the mixing desk rather than on stage.

So: is the Afterneath part of the Thom Yorke sound? Plausibly yes. Is there good evidence that Thom Yorke steps on an Afterneath V3 pedal? Not that we could find, and the best-maintained archive of his rigs does not list one. If you want a documented Radiohead-adjacent EQD connection to hang a tone on, the Hoof is the safer bet — and Jonny Greenwood’s approach to processed guitar, covered in our Jonny Greenwood guide, is a better model for this kind of thinking anyway.

Reference Points Who Are Not Users

Because the Afterneath gets described as an “ambient” pedal and ambient guitar has a canon, a few names come up constantly in the same breath. To be clear: Robin Guthrie of the Cocteau Twins, Kevin Shields, Robert Smith, The Edge and David Gilmour are not documented Afterneath users. They are useful reference points for the results — Guthrie’s stacked, pitch-smeared washes are the closest thing in the recorded canon to what modes 8 and 9 do, and Shields’ approach to letting an effect destabilise a chord is the right frame of mind for the Drag knob — but nobody should walk away thinking any of them plugged into one. Similarly, Nels Cline is namechecked in EQD’s own Pirog interview as an influence, not as a user.

Tone Recipes

EarthQuaker famously refuses to print suggested settings for this pedal. They have, however, demonstrated it extensively on their own blog, and several of the recipes below are reverse-engineered directly from those demonstrations. Knob positions are clock references with the pedal in front of you.

How It Compares

Buying Guide

Which Version Should You Buy?

Buy the V3 if you are going to plug something into the expression jack. That is the whole calculus. The modes are the V3’s reason to exist and they only fully come alive under expression or CV. If you already own a 50k expression pedal, or you are willing to buy one, the V3 is unambiguously the most capable Afterneath ever made.

Buy the V2 if you want relay switching and Flexi-Switch but have no interest in expression control. It does everything the V1 does with a quieter, more modern footswitch, and it will usually be meaningfully cheaper on the used market than a V3. You are giving up modes you would not have used.

Buy the V1 if you like mechanical true bypass, want the cheapest route in, and are happy with six knobs. Plenty of the pedal’s most-loved recorded moments were made on V1s. Note the practical difference: the V1’s true-bypass switch means the pedal passes signal with the power off, which the V2 and V3 do not.

How To Identify A Version From A Photo

The reliable tells, in order of usefulness: a small extra knob (Mode) beneath the Drag control means V3; the Reflect and Drag positions are swapped on the V3 relative to earlier versions; the V3 has an expression jack on the side of the enclosure; and the V3 carries redrawn graphics. Between V1 and V2 the visual difference is minimal, so if a seller cannot tell you, ask them whether the footswitch clicks mechanically (V1) or is silent and soft (V2).

Price

The V3 launched at $199 in April 2020 and held that price for years. As of September 2026 the list price sits at $249, with major retailers routinely discounting to around $211. Used V2s and V1s turn up regularly and are usually worth the saving if you have no expression plans. As with every EarthQuaker product, the limited lifetime warranty travels with the pedal, not with the original purchaser, which materially improves the case for buying used.

Power

100 mA at 9V DC, centre-negative, 2.1 mm. No battery compartment. This is a well-behaved draw that any decent isolated supply will handle without drama — a pleasant contrast to the Avalanche Run’s 410 mA. EarthQuaker’s warning is worth repeating in capitals as they print it: do not run it at higher voltages. There is no headroom benefit and you will damage it.

Who Should Skip It

Be honest with yourself about four things. First, the Afterneath is not suitable as your only, all-purpose reverb — it can do a passable spring, but if your gig needs reliable, invisible ambience across a whole set, buy something else and add this second. Second, it can produce overly washy results that suit some styles and actively sabotage others; fast, busy, polyphonic playing turns it to soup. Third, if you will never buy an expression pedal, the Mode knob is largely decorative and you should be shopping for a V2. Fourth, it is a pedal that demands time — EarthQuaker’s own house writer says outright that you should expect to put in real hours before it yields good results for you. If your relationship with gear is “plug in, works, done,” this is the wrong purchase and there is no shame in that.

Living With One

Placement. End of chain, after modulation, is the default and it is the default for good reason. EQD’s own demonstration chain runs compressor into octave into phaser into flanger into Afterneath into delay, which puts it second-from-last. In an amp’s effects loop it behaves more predictably with high-gain amp tones; in front of a clean amp it is more dramatic and more prone to mush.

Pick attack matters more than usual. EarthQuaker flag this explicitly and owners confirm it: the Afterneath’s reverberations respond to how hard you hit the string in a way most digital reverbs do not. Dynamics are a control on this pedal. Playing softer genuinely changes the character of the tail, not just its level.

Watch the Length-and-Reflect interaction. The failure mode is a rising, ringing, metallic tone that builds until it is the only thing anyone can hear. If it happens mid-song your fastest recovery is Reflect, not Length or Mix.

The LED is bright. Owners of the module in particular complain that the mode LED is dazzling enough that tape over it is a common fix. On a dark stage this is a minor irritation; in a home studio at 2 a.m. it is a real one.

Input level discipline. The module clips above roughly fifty per cent input level and the pedal, while more forgiving, is happiest with a sane signal in front of it. If you are stacking a loud boost into the Afterneath and hearing crunch you did not ask for, back off the boost before you start blaming the reverb.

Trails behaviour. The V3 ships with tails on, which is almost certainly what you want. If you need the effect to cut dead when you disengage — useful for hard stops — hold the footswitch while plugging in the power and watch for the triple LED flash. The setting persists.

Non-guitar instruments. EarthQuaker’s own audio samples for this pedal include Spitfire Albion, ANA 2, Omnisphere, a Moog Sub 37 and an OB-6, and their own films show it on Rhodes, voice, saxophone and bass. If you have a synth, put the Afterneath on it before you decide what the pedal is for. Several owners describe the synth application as the one that finally made it click.

Frequently Asked Questions