“I plugged in that Thunderverb 50, no pedals or anything, and just raked a G chord. It sounded like fucking Malcolm Young! I just knew right there.” Pepper Keenan told this to both Premier Guitar and Orange Amps, because the specific story of how he discovered the Orange Thunderverb 50 is worth telling twice. He was at a NAMM show in California with Kirk Windstein of Down and Crowbar. An Orange representative recognized them and invited them to try the Thunderverb 50. He plugged in. One G chord. Malcolm Young. “We actually got kicked out of the NAMM show for being at the Orange booth and playing so fucking loud.” He has been using Orange Thunderverbs ever since. This is how gear decisions get made in the real world: you plug in, you play a G chord, and it either sounds like Malcolm Young or it doesn’t. If it does, you’re done. The search is over. “And I use channel B, and it only has three knobs — shape, gain, and volume.” Three knobs. Done. He also has James Hetfield to thank for his ESP guitars. “Me and Woody [Weatherman] use ESP guitars that we had made years ago. They’re basically beat-to-shit workhorses at this point.” Hetfield convinced them to switch from Gibson SGs to ESP on the tour. “ESP just keeps putting them back together.” Beat-to-shit workhorses that sound like Malcolm Young through an Orange Thunderverb 50. This is Southern metal. This is Pepper Keenan.
Pepper J. Keenan was born on May 8, 1967, in Oxford, Mississippi — the same small Mississippi college town that produced William Faulkner and that gives Keenan’s approach to heavy music its specific Southern cultural grounding. He joined Corrosion of Conformity (founded in Raleigh, North Carolina in 1983) in 1989 as guitarist and became the lead vocalist from the recording of Deliverance (1994) onward. COC’s evolution — from their early hardcore/crossover thrash approach (Eye for an Eye, 1984; Animosity, 1985; Blind, 1991) to the Southern metal and groove metal approach that Keenan’s melodic guitar work catalyzed (Deliverance, 1994; Wiseblood, 1996; America’s Volume Dealer, 2000) — represents one of the more dramatic musical evolutions in American metal. Simultaneously, from 1995 onward, Keenan has been guitarist in Down — the New Orleans supergroup formed by Phil Anselmo, Kirk Windstein, Rex Brown, and Jimmy Bower, whose NOLA album (1995) is one of the foundational documents of sludge metal and Southern metal. He is, alongside Kirk Windstein, the specific guitarist whose playing defines what Southern American metal sounds like in both its COC and Down contexts. He beats the hell out of his guitars. He rakes G chords. He sounds like Malcolm Young.
Background: Oxford Mississippi, North Carolina, Down NOLA 1995, “Beat-to-Shit Workhorses,” the James Hetfield ESP Switch
Corrosion of Conformity’s evolution from hardcore crossover to Southern groove metal is the most dramatic genre transition in this section of the guide — a band that began as a hardcore/punk/thrash crossover act (playing fast, aggressive, politically charged music in the lineage of Black Flag and Dead Kennedys) and developed, through the incorporation of Black Sabbath’s riff-based heaviness and the Southern rock tradition’s melodic sensibility, into something entirely different. The catalyst for this evolution was Pepper Keenan’s guitar playing and vocal approach: his bluesy melodic leads, his specific Southern rock-inflected riffing, and his baritone singing gave COC’s music in the Deliverance era a warmth and accessibility that the early hardcore approach had not possessed.
The Down NOLA parallel is the most specific context for understanding Keenan’s guitar approach. Down’s NOLA (1995) — recorded as a one-off project by five of the most respected musicians in the New Orleans and Southern metal scenes (Anselmo/Pantera, Windstein/Crowbar, Keenan/COC, Rex Brown/Pantera, Bower/Eyehategod) — is the specific founding document of New Orleans sludge metal and the record on which Keenan’s Southern metal guitar approach is most purely and most completely realized. The Equipboard documentation about the Marshall JCM800: “This amp is THE rhythm sound on Down ‘NOLA'” — the JCM800 that defined his primary rhythm tone on the album that defined the genre.
The James Hetfield ESP switch story — Hetfield convincing Keenan and Weatherman to switch from Gibson SGs to ESP guitars during a Metallica tour — is one of the more practically consequential peer recommendations in the American metal tradition. Hetfield is one of the most respected rhythm guitarists in metal history; his recommendation of ESP as a working guitarist’s tool was received as authoritative, and the subsequent “beat-to-shit workhorses” that ESP has been repairing for decades confirms that the recommendation was well-founded. Hetfield knows guitars. Keenan listened.
The Rig: Pepper Keenan’s Guitars, Amps, and Effects
Guitars
ESP Custom “Beat-to-Shit Workhorses” (Primary Career Guitars, Multiple Custom Models): Pepper Keenan’s primary guitars are ESP custom instruments — described by him to Guitar World in the most practical possible terms: “Me and Woody [Weatherman] use ESP guitars that we had made years ago. They’re basically beat-to-shit workhorses at this point. It’s almost like I get nervous taking them on tour — because they’re an extension of us. They’re beat to smithereens, and ESP just keeps putting them back together.” The specific custom ESP models in his documented collection include a red ESP Custom Viper (documented by Equipboard from a photo) and the ESP custom shop “weekenders” that MusicRadar documents — doublecut ESPs from the ESP custom shop used for overseas touring to protect the primary instruments. The “ESP custom shop that have seen more than their fair share of aggressive playing” characterization from MusicRadar captures the physical reality of Keenan’s relationship to his instruments: they are working tools, subjected to genuinely aggressive playing (“we beat the hell out of them”), and maintained by ESP’s repair service rather than by his own careful preservation.
Gibson SG Junior Large Guard (Deliverance Era, “Clean My Wounds” Video): Before the Hetfield ESP recommendation changed his guitar family, Keenan used Gibson SGs. The Equipboard documentation: “Pepper Keenan is seen using a Gibson SG Junior (Large Guard) as his main guitar during the Deliverance era, as evidenced in the ‘Clean My Wounds’ music video.” The Gibson SG Junior — the stripped-down, single-pickup, P-90-equipped version of the standard SG — provides a specific bright, aggressive, single-coil character appropriate for the groove metal riffing of the Deliverance period.
Gibson SG-R1/Artist (Early COC, “Vote with a Bullet” Video): Keenan’s earliest documented COC guitar is the Gibson SG-R1/Artist: “Pepper Keenan is seen using a Gibson SG-R1/Artist as his main guitar when he first joined Corrosion of Conformity, which is evident in the ‘Vote with a Bullet’ music video.” The SG family preference (from the first documentation through the Hetfield-motivated ESP switch) reflects the specific thin mahogany body’s resonant, aggressive character that suits his groove riff approach.
Gibson Les Paul Deluxe (Backup, Blind/Deliverance Era): “Pepper Keenan can be seen using a Gibson Les Paul Deluxe as a backup guitar during the ‘Blind’ and ‘Deliverance’ era. This is evidenced by its appearance in the ‘Albatross’ music video.” The Les Paul Deluxe — with its mini-humbuckers rather than full-size humbuckers — provides a specific midrange-present character that differs from both the SG and the full Les Paul Standard.
Gibson Firebird Studio (Documented, Black): “In this photo, Keenan can be seen playing a black Gibson Firebird Studio.” The Gibson Firebird — the reverse-body guitar with banjo-style tuners and mini-humbuckers — adds another distinct tonal character to his documented collection.
Wound G String and Bass Pick (Technique-Defining String Choice): The MusicRadar rig tour documents a specific technical detail that has enormous impact on his playing feel: “Keenan strings his with a wound G for extra purchase and uses a bass pick.” Using a wound (rather than plain) G string on a standard guitar set changes the tactile feel of the G string — giving it the texture and resistance of the wound D and A strings rather than the smooth surface of a plain steel string. Combined with the use of a bass pick (larger, heavier than standard guitar picks), this choice reflects the specific physical attack of his playing: he attacks the strings aggressively, and the wound G and bass pick give him the traction and authority for that attack. “We beat the hell out of them” — the wound G and bass pick are the physical tools for that beating.
Amps
Orange Thunderverb 50 and 200 (Primary Amp, “Now and Forever a Devotee”): Keenan is “now and forever a devotee of Orange Amplifiers’ discontinued Thunderverb 50.” His discovery of the Thunderverb at NAMM — one G chord, Malcolm Young, kicked out for playing too loud — is the most specific and most entertaining amp-discovery story in this guide. The Orange Amplifiers interview provides his complete philosophy: “I plugged into that thing and it was just instantly, raked a G chord and it was a classy sounding, right out of the gate, no pedals, real deal amp. You could feel it, you could tell and the simplicity was what I liked with it the most.” He has since found an Orange Thunderverb 200 (even rarer than the discontinued 50) and is transitioning to it: “Orange doesn’t make them anymore. But it’s still my go-to amp. I use channel B, and it only has three knobs — shape, gain, and volume.” Three knobs. Done.
The Orange Thunderverb 50’s specific character: a 50-watt EL34-powered tube head with two channels, known for its warm, organic British tube tone with exceptional clarity and sustain. The channel B that Keenan uses — with its three-knob simplicity — provides the maximum possible tone per control interaction. The “Malcolm Young” characterization reflects the specific character: clean, powerful, punchy rock authority with natural tube saturation that sounds like a great AC/DC rhythm guitar rather than high-gain metal.
Marshall JCM800 2203 (Down NOLA Rhythm Sound, Live Backup): “This amp is THE rhythm sound on Down ‘NOLA'” — the Equipboard documentation of the Marshall JCM800 2203 as the specific amplifier used for the NOLA recordings. The JCM800 2203 (100-watt single-channel version of the JCM800, the most celebrated single-channel Marshall of the early 1980s) provides the specific “deep blues metal sound” described in the Down NOLA context. Keenan has used the JCM800 as a live backup — the GuitarGeek diagram shows “a Marshall JCM800 2203 amp head, with one unit active and another as a backup.” The NOLA-era JCM800 and the current Orange Thunderverb represent different phases of his amplification approach: the Marshall for the formative Southern metal period, the Orange for the current and recent period.
Mesa Boogie 50 Caliber+ with 5-Band EQ (Pre-Orange, Previous Primary): The Premier Guitar interview confirms: “Pepper, on previous albums, you were using Mesas, too, weren’t you? Keenan: Yeah. I had the 50 Caliber with the 5-band EQ.” The Mesa Boogie 50 Caliber+ is a 50-watt tube amplifier with the Mesa Boogie’s characteristic tight, articulate American tube response — different from the Orange’s British warmth, providing the tighter, more aggressive character for COC’s heavier passages. Before the NAMM/Orange revelation, this was his primary amplifier.
Four Marshall 1960B Cabinets (Down Stage Setup, Live): “This detailed gear diagram of Pepper Keenan’s Down stage setup includes four Marshall 1960Bs.” Four Marshall 4×12 slant cabinets behind him on the Down stage — providing the physical wall of speaker coverage appropriate for the massive live sound of a five-piece Southern metal supergroup.
Effects
Ibanez Tube Screamer (Primary Drive, “Just Makes It More Pissed”): The Premier Guitar interview confirms the Ibanez Tube Screamer as his primary drive pedal: “I use the Ibanez Tube Screamer. It just makes it more pissed.” This is the most concise description of what the Tube Screamer does in a driven-amp context: it doesn’t add distortion so much as it makes the existing amp character more concentrated, more aggressive, “more pissed.” Running into the Orange Thunderverb’s Channel B (already producing that Malcolm Young G chord character), the Tube Screamer increases the input signal level and adds its specific soft-clipping mid-boost, making the organic British tube character tighter and more aggressive without changing its fundamental character. The same technique is used by dozens of the guitarists in this guide — Mike McCready’s Tube Screamer into a Marshall, Pepper Keenan’s Tube Screamer into an Orange — for the same reason: it makes it more pissed.
MXR Phase 90 (Modulation, Documented Premier Guitar): “And then I have a Phase 90” — the MXR Phase 90’s simple, direct phasing character (a single speed knob, four-stage phase shifting) adds the specific psychedelic swirl to his rhythm guitar sound. The Phase 90 is associated with Eddie Van Halen’s early work as much as with any other guitarist, but its universal utility across rock contexts is evident in its appearance in Keenan’s relatively minimal pedal chain.
Dunlop Wah (Premier Guitar Confirmed, “Just Lean Into”): “And one of those Dunlop wah-wahs that you just lean into.” The casual description — “that you just lean into” — captures his approach to the wah: not a technically deployed effect but a physical expression tool, engaged by leaning on the pedal with his foot and allowing the body weight’s pressure to define the wah sweep. His use of a bass pick and aggressive physical attack extends to his wah technique: the wah is a physical instrument, not a programmed effect.
Boss Delay (Confirmed, Premier Guitar): “And I have a Boss delay.” The unspecified Boss delay — the Boss compact delay family is ubiquitous in professional guitar rigs — provides the echo dimension. The specific Boss DD-3, DD-5, or other model is not identified in the Premier Guitar interview; the Boss compact delay’s reliable, accessible digital echo character is the consistent element.
Doubler Pedal (Recommended by Someone, Widening Effect): “And then I have a really good doubler pedal that someone suggested.” The doubler — a pedal that creates a slightly delayed, pitch-shifted copy of the guitar signal to simulate the sound of two guitars playing simultaneously — adds width to the guitar’s stereo image in the live mix. The specific doubler pedal is not identified in the Premier Guitar interview; the recommendation origin is also unspecified. It works; someone suggested it; it’s in the chain.
Boss SD-2 Dual Overdrive (Down Stage Setup, Documented GuitarGeek Diagram): “In a diagram from GuitarGeek, Pepper Keenan’s Down stage setup includes a Boss SD-2 Dual Overdrive” — the two-channel overdrive providing both a gentler overdrive (for edge-of-saturation passages) and a more aggressive overdrive (for heavier sections) within a single compact unit.
Rocktron Intellifex and CAE MIDI Controller (Previous Complex Setup): The UberProAudio documentation includes a Rocktron Intellifex multi-effects processor and a CAE MIDI controller pedal in Keenan’s historical rig — reflecting a period when his live signal chain was more complex than the current simplified approach. The transition from the Rocktron-based complex system to the simpler Tube Screamer/Phase 90/wah/Boss delay approach reflects the broader trend toward simplicity that characterizes his current stated approach: three knobs on the Orange; a few pedals; done.
Playing Style & Tone Philosophy
Pepper Keenan’s playing style is the most physically aggressive in this section of the guide — a guitarist who literally beats the hell out of his instruments, uses a bass pick for additional physical authority, strings with a wound G for greater traction, and gets kicked out of NAMM shows for playing too loud. His rhythm guitar approach — the specific groove-based riffing that gives COC’s Deliverance era its Southern rock-meets-metal character — is built on the Malcolm Young AC/DC rhythm tradition (powerful, physical, groove-oriented) filtered through Black Sabbath’s heaviness and Southern rock’s melodic sensibility.
His tone philosophy is the NAMM philosophy: “I plugged into that thing and just raked a G chord. It sounded like fucking Malcolm Young. I just knew right there.” This is not the systematic tonal exploration of a gear obsessive; it is the immediate recognition of a tone that serves his specific musical purpose. The Orange Thunderverb 50’s specific character — warm, powerful, British, organic tube saturation — is exactly what the COC groove metal riff approach requires. The Tube Screamer “makes it more pissed.” The wound G and bass pick make the attack more physical. The Phase 90 adds movement. The wah adds expression. That is the entire signal chain philosophy.
How to Sound Like Pepper Keenan
Guitar: ESP custom double-cutaway or standard production ESP (EC series, Eclipse, or similar set-neck humbucker guitar). String with wound G string for the specific physical feel of his approach. Use a heavy or bass pick rather than a standard guitar pick.
Amp: Orange Thunderverb 50 (discontinued, but available used) or comparable Orange amplifier (Orange Rockerverb, Thunder 30 or 100). Channel B for its three-knob simplicity. Malcolm Young G chord test: if it sounds like Young, you’re done.
Amp Settings (Orange Thunderverb 50 — Channel B):
| Control | Setting (0–10) | Notes |
|---|---|---|
| Gain | 6–8 | Moderate-high — British organic saturation, not maximum gain |
| Shape | 5 | Neutral — the Thunderverb’s tone shaping, adjust to taste |
| Volume | LOUD | They got kicked out of NAMM. Play it like you mean it. |
Pedals: Ibanez Tube Screamer (gain low, volume above unity, tone at noon — “it just makes it more pissed”). MXR Phase 90 (speed slow, on most of the time for subtle movement). Dunlop wah (lean into it physically, don’t toe-pick). Boss delay (moderate time, 2-3 repeats). The wound G string provides the physical traction for the bass-pick groove attack. Beat the hell out of the guitar.
Influence & Legacy
Pepper Keenan’s influence on Southern metal and groove metal is the most specifically rhythmic in the tradition — his specific approach to the groove riff, the Southern-inflected melodic lead, and the powerful physical rhythm guitar playing defined what COC’s most commercially successful era sounded like and contributed substantially to what Down’s NOLA established as the Southern sludge metal template. The COC Deliverance/Wiseblood era influenced countless subsequent Southern metal and groove metal bands; Down’s NOLA is one of the foundational documents of the genre.
His connection to Kirk Windstein (Series 2 #185) as bandmate in Down and fellow Southern metal architect reflects the specific creative partnership that produced NOLA: two guitarists with complementary approaches (Keenan’s COC-influenced Southern groove metal and Windstein’s Crowbar-influenced sludge doom) creating something larger than either approach alone. His connection to Wino Weinrich (Series 2 #182) as a peer in the American heavy underground reflects the shared aesthetic values of the Southern and Mid-Atlantic doom/heavy rock traditions.
Internal Links:
- Kirk Windstein of Down/Crowbar, Keenan’s Down bandmate and fellow Southern metal architect at #185
- Wino Weinrich of Saint Vitus, a peer figure in the American heavy underground tradition at #182
- Victor Griffin of Pentagram, another foundational figure in the American doom/heavy tradition at #181
- Dave Wyndorf of Monster Magnet, a peer in the American heavy rock underground at #183
Frequently Asked Questions: Pepper Keenan COC Guitars & Gear
What guitar does Pepper Keenan play?
Keenan’s primary guitars are ESP custom instruments — described as “beat-to-shit workhorses” that “ESP just keeps putting back together.” Specific documented ESPs include a red ESP Custom Viper and the ESP custom shop “weekenders” used for overseas touring. Earlier primary guitars include Gibson SG-R1/Artist (early COC, “Vote with a Bullet”), Gibson SG Junior Large Guard (Deliverance era), Gibson Les Paul Deluxe (Blind/Deliverance backup), and Gibson Firebird Studio. James Hetfield convinced Keenan and Woody Weatherman to switch from Gibson SGs to ESP during a Metallica tour.
What amplifier does Pepper Keenan use?
Keenan is “now and forever a devotee of Orange Amplifiers’ discontinued Thunderverb 50” — discovered at a NAMM show when one G chord sounded like Malcolm Young and led to getting kicked out for playing too loud. He has since found an Orange Thunderverb 200 and is transitioning to it. He uses Channel B exclusively (“it only has three knobs — shape, gain, and volume”). Previous amps: Mesa Boogie 50 Caliber+ with 5-band EQ (pre-Orange era). Down NOLA rhythm sound: Marshall JCM800 2203, described as “THE rhythm sound on Down NOLA.”
What effects pedals does Pepper Keenan use?
His confirmed signal chain from the Premier Guitar interview: Ibanez Tube Screamer (“it just makes it more pissed”), MXR Phase 90, Dunlop wah (“one of those Dunlop wah-wahs that you just lean into”), Boss delay, and a doubler pedal “that someone suggested.” His Down stage setup diagram also shows a Boss SD-2 Dual Overdrive. Earlier complex rigs included a Rocktron Intellifex multi-effects processor and a CAE MIDI controller.
How did James Hetfield influence Keenan’s guitar choice?
Hetfield convinced Keenan and Woody Weatherman to switch from Gibson SGs to ESP guitars during their time on tour with Metallica. As one of the most respected rhythm guitarists in metal history, Hetfield’s recommendation carried authority. The resulting ESP custom instruments have been Keenan’s and Weatherman’s primary guitars ever since — worked hard enough to become “beat-to-shit workhorses” that ESP repairs on an ongoing basis.
What is the Malcolm Young G chord story?
At a NAMM show, Keenan (with Kirk Windstein) was recognized by an Orange Amplifiers representative who invited them to try the Thunderverb 50. “I plugged into that thing and it was just instantly — raked a G chord and it was a classy sounding, right out of the gate, no pedals, real deal amp. You could feel it, you could tell.” It sounded like Malcolm Young of AC/DC — the specific warm, powerful, authoritative rhythm guitar character of Young’s AC/DC tone. “We actually got kicked out of the NAMM show for being at the Orange booth and playing so fucking loud.” He has used Orange Thunderverbs ever since.
What is Down and what is NOLA?
Down is a New Orleans supergroup formed in 1995 by Phil Anselmo (Pantera), Kirk Windstein (Crowbar), Pepper Keenan (Corrosion of Conformity), Rex Brown (Pantera), and Jimmy Bower (Eyehategod). Their debut album NOLA (1995) is one of the foundational documents of New Orleans sludge metal and Southern metal — a record that combined the diverse approaches of its five members into something heavier and more psychedelic than any of their primary bands individually. The Marshall JCM800 2203 that Keenan used for NOLA is described as “THE rhythm sound on Down NOLA.”
Why does Keenan use a wound G string and a bass pick?
Keenan strings with a wound G string (the third string, which in standard sets is a plain steel string above .017 gauge) for “extra purchase” — the wound string’s textured surface provides more traction for his aggressive right-hand attack. He also uses a bass pick (larger and heavier than standard guitar picks) for the same reason: the physical authority of his playing requires tools that can withstand and channel that force. These choices reflect the direct physical expression of his playing approach: he beats the hell out of his guitars, and the wound G and bass pick are the equipment that enables that beating.
