John Mayer

John Mayer is a guitarist whose lead tone has become a reference point for players building overdrive setups. His solo sound is built on stacking two overdrive pedals, one driving into the other, and the specific pedals in that stack have changed across eras: a Tube Screamer and a Boss Blues Driver in the mid-2000s, a Marshall Bluesbreaker on the album Continuum, and later a Klon Centaur feeding a TS10. Alongside the stomps, he has used a Dumble-designed boost that was never sold to the public, and on his 2021 album Sob Rock he turned to a Fractal Axe-Fx III rack unit for both studio and live work.

His 2022 Dead & Company board ran 21 pedals on a triple-rack Trailer Trash setup, the same configuration normally reserved for his solo shows, up from a relatively restrained 16 pedals earlier in that tour¹.

The stacked-overdrive solo tone

The core of Mayer's lead sound is two overdrives stacked into each other. On JHS Pedals' YouTube rig rundown, Josh Scott walks through a 2007 Austin City Limits performance and describes what is happening: "he's stacking and overdrive it's mainly the guitar it's mainly the hands but yeah it's a great sound two overdrive stacked is this solo tone"³. Scott calls that performance a turning point for the electric guitar, and notes that at that point there was no Klon in Mayer's rig³.

Nordvang Custom, a maker whose pedals are built around Mayer's tones, describes the stacking order behind its '83 Drive: the two original pedals "have played an important part in the live guitar tones of John Mayer through the years, as the pre drive he stacks into his TS10 to obtain his lead tone"². In other words, one pedal is set as the first, lighter drive in the chain, and the TS10 after it is where the lead sound comes together.

Nordvang's Gravity pedals point at the later version of that approach:

Nordvang's Triple Gain combines three circuits, each of which the maker says "has played, and continues to play, a significant role in John Mayer's tone"⁶.

A rough timeline of the drive pedals in his lead tone:

Overdrives: Klon Centaur, Blues Driver and the JHS A Box Later

The Klon years

The Klon Centaur is the overdrive most associated with Mayer's later lead tone, but it was not always in his rig. In the pre-Klon era, around the time of his Austin City Limits performance, he was using a Tube Screamer and a Blues Driver, with a Katana boost and a T-Rex delay also appearing on an early board from roughly 2006¹⁰. As one account of that period put it, "there was no Clon in the picture"¹⁰.

What the Klon brings to a rig, as the coverage around it describes:

• An overdrive pedal with both overdriven tones and boosting capabilities¹⁰¹¹
• A reputation for high prices that dates to the original run's end¹²
• A line of tributes, including the J. Rockett Archer, an exact tribute to the original with germanium diodes, described as capturing the imagination of players from Jeff Beck to John Mayer¹⁰

Before the Klon: the Blues Driver and the Bluesbreaker

Mayer's earlier drive sounds came from other pedals. Josh Scott of JHS says that in the pre-Klon era, around 2006, "we know he's using a tube screamer and a blues driver"³, and elsewhere adds that "there's a reason John Mayer had it on his board forever"¹³. The Boss Blues Driver BD-2 was a long-term resident of his pedalboard.

The Marshall Bluesbreaker, a low-gain overdrive pedal¹⁴, is tied to Continuum. Scott says he learned that Mayer "had used an original 1991 black-box Marshall Bluesbreaker pedal" on that album⁷⁸. Origin Effects notes that in 2005 Mayer was spotted using a Blues Breaker in his rig, and that "with this, the Blues Breaker's fate was sealed"¹⁵. MusicRadar's coverage of the reissue suggests "you can hear why someone like John Mayer would add it to his 'board"¹⁶.

The JHS A Box Later

The most obscure piece in Mayer's drive story is the Dumble A Box Later, a boost pedal designed by Alex Dumble and never released to the public¹⁷. Mayer owns a one-of-a-kind Dumble A Box Later stompbox, along with a Dumble BBC1¹⁸, and he lent the unit to JHS, who cloned the circuits for him¹⁹. JHS says he "has used it in several situations over the years" and received replicas of both Dumble units in 2019²⁰.

JHS built the Box It Later as a custom piece for Mayer: a specialized utility buffer and boost pedal²¹, inspired by Dumble's A Box Later²². He used the JHS Box It Later on his pedalboard in 2021 with Dead & Company¹⁸. The pedal later reached a wider audience indirectly: the clean side of the JHS Notadumble was intended to be a copy of the Box It Later²², based on Mayer's A Box Later pedal for its cleans¹⁸. BLAMMO! Electronics sells its own take, the Box o' Later, designed by Ryan Colgan, also known as The Tone Geek¹⁷.

Mayer's relationship with JHS goes beyond the Box It Later. After Josh Scott's accident in 2025, Mayer texted him: "John texted me after the accident and said he wanted to make sure things kept moving forward in my absence"²³. Mayer then filmed a surprise video for JHS, which Scott says "reached a lot of people, and we sold lots of units because of it, and that's exactly what John wanted"²³.

Fractal Axe-Fx III on Sob Rock

For Sob Rock, released in 2021, Mayer moved part of his rig into a rack. Fractal Audio says he "uses the Axe-Fx III both live and in the studio, including some standout moments on his latest album Sob Rock"⁴, and the company's history records that he joined its artist roster in August 2021 after using the Axe-Fx III on that album⁵.

The Axe-Fx III is a rackmount unit²⁴ housed in a rugged 3U steel chassis with an anodized aluminum front panel²⁵. For a player who also uses pedals, its effects loop matters: Fractal's own review pages quote users saying "my bandmate and I have tested running outboard pedals into it, in the effects loop, and to be honest, it's made every piece of gear sound better"²⁴. The unit also has inputs for two expression pedals²⁶, which suits a large rig like Mayer's where foot control has to stay available mid-song.

The guitars at recent shows

Mayer's best-known guitar is the PRS Silver Sky, his signature model. On the 2022 Dead & Company tour he was "taking a break from the Roxy Pink model he relied on for a large chunk of his Sob Rock dates in favor of a more muted Moc Sand finish with a rosewood fretboard"¹.

Beyond the Silver Sky, Guitar World's 2022 rig rundown reports heavy use of his triple-pickup McCarty 594 Honey and a silver McCarty, while his 1952 Fender Telecaster has also been used at more recent shows¹.

His pedalboard has also carried an Electro-Harmonix Q-Tron+ envelope filter, which Guitar World describes as a mainstay sighted in his 2021 rig²⁷, a filter effect that sits alongside the drives in his live setup.

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