Half a Second of Tape and Three Kinds of Room: The Keeley Caverns Delay Reverb V2 and the Sequel That Deliberately Did Less

Version two of anything is supposed to be more. More time, more modes, more knobs, more of whatever the first one had. That is the contract. You buy the sequel because the sequel is bigger.

The Keeley Caverns Delay Reverb V2 broke that contract on purpose, and it is the most interesting thing about the pedal. The original Caverns had a full one second of 24-bit delay, a studio plate reverb algorithm, a Morph control that reshaped each reverb mode from the inside, and an industry-first feature Keeley called Inverse Dynamic Modulation, where the repeats stayed clean until they started to fade and only then began to wobble. It was a clever, ambitious, slightly show-off pedal.

The V2 that replaced it in August 2017 has 650 milliseconds of delay. No plate. No Morph. No Inverse Dynamic Modulation. It is, on the spec sheet, a smaller pedal than the one it replaced — and it has now outlived its predecessor by nine years and counting, sitting on Keeley’s active product page in 2026 while the V1 lives in the archive with OUT OF PRODUCTION stamped across the top.

That is not an accident and it is not a cost-cutting story. It is a pedal that got rebuilt around a completely different question. The V1 asked how much can we fit in here. The V2 asks what do people actually turn on at the end of a pedalboard. The answer, it turns out, was a spring reverb and a tape echo — and once Keeley committed to that answer, everything else on the pedal fell into place.

Let us go through all of it: what changed, why the trade worked, who is genuinely using one, and where the internet’s story about this pedal falls apart.

The Origin Story: Oklahoma, Compressors, and a Company That Builds Its Own Algorithms

Keeley Electronics is an Oklahoma City operation that began in 2001 — the company marked its 25th anniversary in September 2026 — and made its name doing something unglamorous extremely well. Robert Keeley’s modified Ross-style compressor became the compressor that studio players quietly kept in the drawer, and the brand grew outward from there into overdrives, fuzzes, filters and eventually a genuinely deep bench of digital time-based effects. The Compressor Plus that descends from that first pedal is still the company’s flagship and still the single most common pedal to find sitting next to a Caverns on a board.

What separates Keeley from most American boutique shops is that the digital side is not outsourced. Keeley writes its own delay and reverb algorithms in house — the company has said as much in its own product copy going back to the V1 Caverns, which was built on what Keeley described as a “newly designed dual DSP platform engineered completely in house.” Plenty of respected pedal companies license a reverb engine or buy a chip with the algorithms baked in. Keeley’s reverbs and delays sound like Keeley’s reverbs and delays because they were written at Keeley, and that voice — slightly dark, slightly forgiving, never brittle — is the through-line from the Hooke to the Caverns to the Halo.

The Magnetic Echo Connection

The delay half of the Caverns V2 is not a new circuit. It is Keeley’s Magnetic Echo engine, a standalone pedal in the catalogue built specifically to emulate the behaviour of an analog tape delay line. That matters, because it explains the pedal’s most-criticised number.

650 milliseconds sounds short in 2026, when a $99 box will give you four seconds and a $500 box will give you a minute. But 650 ms is roughly what a well-maintained Echoplex or Space Echo actually delivers before the repeats become mush, and the Magnetic Echo was designed to model that character rather than to win a spec war. Every repeat gets darker and slightly more unstable than the last. Wow and flutter can be dialled in. The maximum time is not a limitation so much as a boundary drawn around the sound the engine was written to produce.

Whether you find that persuasive or defensive probably depends on what you wanted the pedal for, and we will come back to it.

V1 to V2: What Was Actually Traded

This is the comparison nobody makes properly, so here it is in full. Both pedals existed; both were sold by Keeley; the differences are substantial and they run in both directions.

Read that table and the logic becomes obvious. The V1 gave you a longer, cleaner, more configurable delay and a plate reverb. The V2 gave you a shorter, dirtier, more characterful delay and a spring reverb, plus every single practical pedalboard feature the V1 lacked: trails, top jacks, room for two feet, and the ability to be split into two independent effects by a loop switcher.

Gearnews, covering the launch in August 2017, ran the headline “Not much of an upgrade?” and concluded the visual redesign was the main change. That reading was half right and half a missed catch. The cosmetic and ergonomic changes were real and they were the ones you could see in a press photo. The engine swap underneath — plate to spring, studio digital to tape emulation — was the actual product decision, and it is the reason a nine-year-old design still sells.

Specifications

Two numbers on that list deserve a second look. The first is the 75 mA current draw, which is high enough to matter on a crowded board — that is a full slot on most isolated supplies and roughly three times what an analog overdrive wants. The second is 50 mm of height, which is taller than a standard enclosure and will make life awkward on a board with a tight tier above it.

The Price Story

The Caverns V2 launched at a $249 RRP with a $179 early-bird price for pre-orders. Nine years on, Keeley’s own store lists it at $199 — meaning the pedal has effectively settled roughly $50 below its launch RRP and $20 above its introductory price, which in nine years of pedal-market inflation amounts to a real-terms price cut. In September 2026 Sweetwater was running it at $169.15 during a promotional window, Thomann listed it at $222, and used examples were turning up on Sweetwater’s Gear Exchange from $139.95 and on Equipboard’s aggregated listings from the same figure.

Note also that stock is genuinely patchy in 2026: Keeley’s direct store showed the pedal out of stock in the autumn, and Sweetwater listed it as “Available Soon” with an estimated October 2026 restock. That is the normal rhythm of a small American factory building in batches, not a discontinuation signal — the product carries Keeley’s Active tag and does not appear in the archive.

Famous Players: What Holds Up and What Does Not

Here is where this article has to be careful, because the Caverns V2 has an artist list that is longer than you would expect and softer than it looks.

The solid ones

Lucy Dacus is the best-documented user, because she named the pedal herself. In a Guitar.com interview around the making of Home Video, discussing how her board had grown from near-nothing into an actual rig, she listed it directly: “I’ve got a KTR Klon, which is on almost all the time, an Xotic SP compressor, the Keeley Caverns, the Iron Horse for big distortion, the Longsword, and the Walrus Julia chorus…” That is a first-person account from the player, which is the strongest evidence class there is. One honest caveat: she says “the Keeley Caverns,” not “the Caverns V2,” so the version is an inference rather than a fact.

Nick Hakim is quoted on Keeley’s own artist page describing exactly how he uses it, and the quote is unusually specific about a non-guitar application: “I have the Caverns which is incredible! I started using it like an outboard effect at home sending all kinds of things through it. Love how it sounds. I think I may start using it live to send my vocals through.” A player describing running his own vocals through a guitar pedal is not the sort of thing a marketing department invents.

Mike Kinsella of American Football has the pedal visible on camera in the band’s KEXP session, with a documented timestamp. Johnny Stevens of Highly Suspect shows it on his board in a filmed rig rundown. Daniel Donato demonstrates it on his board in a Six String Country video. Those three are video-confirmed, which is the second-strongest evidence class.

Joey Landreth, Sarah Lipstate (Noveller), Larry Mitchell and Teddy Kumpel all appear on Keeley’s official artist pages. That is a real endorsement relationship rather than a spotted-in-a-photo claim, but it is also exactly the category where an artist page can list a company’s whole catalogue rather than the specific pedal a player uses nightly. Treat those as “affiliated with the brand” rather than “documented on stage with this SKU.”

The one that does not hold up

You will find Jack White credited with a Caverns V2 on Equipboard, and the citation is worth reading in full because the site itself does not claim certainty. The entry describes a Union Tube & Transistor Instagram post showing White’s copper-painted board for the 2019 Raconteurs tour and concludes: one of the pedals has eight knobs, two footswitches and two toggle switches, “which happens to be the exact layout for the delay+reverb pedal,” and the submitter writes “I believe to be the Keeley Electronics Caverns v2.”

That is a shape match on a repainted pedal in a photograph. It is not evidence. An eight-knob, two-footswitch, two-toggle layout is common enough across dual-effect pedals that the deduction proves very little, and White is not a Keeley artist. Anyone telling you Jack White uses a Caverns is repeating a guess that the original poster explicitly flagged as a guess.

Two more database errors worth flagging

Equipboard’s own page for the Caverns V2 lists it under “Album Usage” as heard on Lucy Dacus’s No Burden, released in 2016. The Caverns V2 was announced in August 2017 and shipped that same month. The pedal did not exist when that record was made. The V1 was out by then, so the attribution may be a version mix-up, but as written it is chronologically impossible.

The same page credits Teddy Kumpel as a member of Nine Inch Nails. He is not, and never has been. Kumpel is a New York session and touring guitarist best known for long stints with Joe Jackson and Rickie Lee Jones and for his own Loopestra project. The Keeley artist-page listing is real; the band credit attached to it is not.

None of this is a knock on the pedal. It is a reminder that crowd-sourced gear databases are a starting point for research and never the finish line — and that a pedal at this price point tends to accumulate optimistic attributions precisely because it is affordable enough to be plausible on almost anyone’s board.

The player profile that actually emerges

Strip out the noise and a consistent picture is left. Indie and alt-rock songwriters who want atmosphere without a learning curve — Dacus, Kinsella, Hakim. Roots and country players who want a spring tank and a slapback in one box — Donato, Landreth. Session and touring guitarists who need a reliable end-of-chain unit that does not require a tablet to operate — Mitchell, Kumpel, Lipstate. That is a coherent constituency and it maps exactly onto what the pedal is good at.

How the Controls Actually Work

Eight knobs, two toggles, two footswitches. It looks like a lot and it is not, because the layout is symmetrical: four knobs and a toggle per side. The only genuine complexity is that one knob per side changes its job depending on the mode.

The reverb side

Blend sets how much reverb you hear. Decay sets how long the tail lasts. Warmth rolls the reverb’s tone from bright to dark — and this is the control that does most of the work in making a digital reverb sit under a band rather than on top of it.

Rate is the mode-dependent one, and understanding it is the difference between a good Caverns and a confusing one:

So on Spring, Rate is a speed. On Modulated, it is a depth. On Shimmer, it is an amount. If you have ever set the Caverns up in Shimmer, loved it, flipped to Spring and found the pedal suddenly wobbling, that toggle is why.

The Spring mode deserves a specific mention. Building the amp tremolo into the reverb mode is a very Keeley decision — it is the sound of a blackface combo with the reverb and vibrato both on, packaged as one setting. Most reverb pedals give you a spring model. Very few give you a spring model with the amp’s tremolo attached.

The delay side

Time spans 30 ms to 650 ms. Repeats sets feedback. Blend sets level. Rate sets the speed of the modulation, and the three-position toggle sets its depth: Off, Light, Deep.

Off is a clean tape echo — dark repeats, no pitch movement. Light adds the subtle drift of a well-serviced tape machine. Deep adds the wow and flutter of one that has been on the road for a decade. The absence of a Tap Tempo footswitch is the pedal’s most-cited limitation and it is a fair complaint; with 650 ms of range and a Time knob you are setting delay by ear, which is fine in a studio and a genuine nuisance on a dark stage.

The two things hidden inside the box

Open the enclosure and there are two separate trails switches, one per side. That is more thoughtful than it sounds: you can run the reverb with trails so tails decay naturally when you stomp it off, while keeping the delay in true bypass so it cuts dead. Most dual pedals give you one global setting.

There are also four internal DIP switches that enable what Keeley calls switching-system mode. Flip them, and with two TRS breakout cables the pedal splits into two independent effects that a loop switcher — or a looper — can address separately. It is a pro-rig feature buried inside a $199 pedal, and it is the single most under-discussed thing about the Caverns V2. If you run a switching system, this pedal occupies two loops while taking up one board slot.

Tone Recipes

These are starting points, described as clock positions. The Caverns rewards small moves on Warmth more than large moves on anything else.

How It Compares

Buying Guide

Buy one if

You want a spring reverb and a tape echo at the end of your chain and you do not want to think about it again. You need the two effects on separate footswitches. You have a loop switcher and would like one board slot to serve two loops. You play surf, rockabilly, country, indie or anything else where the reference reverb is a physical tank rather than a hall.

Do not buy one if

You need tap tempo — the omission is real and there is no workaround. You need more than 650 ms. You need presets, MIDI or stereo. You have a shallow board tier, because 50 mm is tall. You have a tight power budget, because 75 mA is not nothing.

New versus used

New sits at $199 direct, with $169 promotional pricing appearing periodically and around $222 in Europe. Used runs from roughly $140. The gap is small enough that new makes sense if you value the warranty and want a current-batch unit, but this is a solid-state pedal in a metal enclosure with no moving parts beyond four pots per side and two switches — a clean used example is a low-risk purchase.

What to check on a used one

Confirm which trails settings the previous owner left the internal switches on, and confirm the four DIP switches are in standard mode unless you actually want switching-system routing — a Caverns that seems to have lost half its signal is very often a pedal someone left configured for TRS breakout. Check both footswitches for reliable engagement. Check the toggle detents. There is no battery compartment, so no corrosion risk from a forgotten 9V.

Also budget for

A 9V centre-negative supply, because none is included and 75 mA rules out daisy-chaining with much else on a shared output. Two TRS breakout cables, if you intend to use switching-system mode.

Living With One

The Caverns V2 has been in continuous production for nine years, which by pedal standards makes it an institution rather than a product. Thomann’s 61 customer ratings average 4.8 out of 5, with 51 of those being five-star; Sweetwater carries 76 reviews. Long-run averages that high on samples that size are unusual and tell you something reliability-wise that no spec sheet will.

The recurring themes in owner feedback are consistent and worth repeating because they are honest about both sides. Owners praise how quickly it gets to a usable sound and how well the two halves interact — one Thomann reviewer noted that the magic is specifically in the combination rather than either effect alone. The most common complaint, from the same reviews, is the absence of preset storage: players who tweak constantly find themselves re-dialling. And a recurring practical use case is offloading spring reverb and tape echo out of a digital modeller’s effects loop so the modeller’s DSP can be spent elsewhere — a use the pedal was never marketed for and is very good at.

On maintenance: there is essentially none. Keep the jacks clean, keep it dry, and use a proper isolated supply. Keeley’s Oklahoma repair operation handles service directly, and European buyers who register through Warwick’s distribution get an extended four-year warranty on top of the standard cover.

The special editions

Keeley has run a steady stream of limited Caverns finishes over the years — a Custom Shop “Double Down” edition, a Japan release, a “Spooky Glow” glow-in-the-dark run, and various artist and anniversary decals. They are cosmetic; the circuit is the circuit. But they trade at a premium on the used market and they are the reason a Caverns search on a reseller site turns up a confusing spread of prices for what is functionally the same pedal.

Frequently Asked Questions