John Mayer

"As far as legendary amps...there's the Dumble amplifier made by Alexander Howard Dumble. The Steel String Singer doesn't have overdrive or anything. It's an amplifier that is clean sounding and yet is able to produce a great big sound. Alexander didn't make a whole lot of these but they are such strong amplifiers - Stevie Ray Vaughan used them, Bonnie Raitt used them. A lot of artists of back then were using these amps. If you wanted to call it a boutique amplifier, I guess you could but to me really it's just a double amp. One of the best amplifiers made in the world today," says Rene Martinez, the legendary guitar technician for blues guitarist John Mayer.

https://www.youtube.com/watch?v=F6POSqjjrIA

Mayer discusses how he became the king of tone using a Dumble, and lovingly carries it aboard private planes, rather than having it travel by tour bus.

John had these custom made by Alessandro. These Cabinets were loaded with 2 Celestion Heritage G12-65 speakers. Sometimes John ran 6 of these at one time.

John Mayer uses the Fender Hot Rod Series Blues Junior 15W 1x12 Tube Guitar Combo Amp during his live performances.

In caption of this photo, John Mayer writes,"Just got one of the best new guitar amps I've heard in a very long time. Also here's a picture of my face. @milkmansound 85 watt steel guitar amp hand built by Tim Marcus in San Francisco. Plus my face. I put a JAN 5751 NOS tube in the v1 preamp stage and it sounds amazing. But if that's not your thing, don't worry. This is also a selfie. #knowyouraudience"

"This is John Mayer's signature model amplifier. It's made by people up in California," says Rene Martinez, guitar technician for guitarist John Mayer.

In this photo we can see John Mayer carrying a Fender Princeton reverb amp. The photo is captioned:

John Mayer Is Hounded At Hotel Cafe

John Mayer posted an image on his Instagram on the 10th March 2018 of a Marshall JTM45 Mk.II Plexi with two cabinets.

"Pulled out the Marshall JTM45 mk II plexi today. Just like Jimi used to play. There aren’t many of these still standing. I don’t expect an overwhelming number of likes on this, but the ones I get are going to be valued at 2.4x because this is as badass as it gets."

Blues guitarist John Mayer uses the Fender Vintage Reissue '65 Super Reverb 4X10 Guitar Amp, a powerful amplifier that stands out in his large collection of performance amps.

John Mayer show his "custom" Fender Deluxe Reverb amp in this periscope video. (min 1:15)

In this video, at 2:12, the Soldano SLO that John Mayer is using in this performance with Ed Sheeran can be seen.

To create his legendary, clean-cut sound, John Mayer uses a wide variety of amps, of which the Fender Vibro-King Custom 60W 3x10 Tube Guitar Combo Amp Black is included.

In this picture from his Instagram account we can see he is using the Kemper for warming up.

"I got the sound going, it's 52' Fender Telecaster... and uh, an early 90's Dual Professional. I'll say it now because it's on of my favorite amps cause' I have a couple."

John Mayer used a 1950s Fender Tweed Twin on stage alongside his usual set -up.

Used a Dumble Dumbleland Special while touring with Dead and Co. back in 2017 for their summer tour.

In a rig rundown video by Premier Guitar, John Mayer is shown using the Two-Rock TRCU50HDTR Custom Reverb v3 TR 50W Tube Guitar Amp Head as part of his diverse amplifier setup.

John Mayer's Two-Rock is a limited edition signature model which is no longer in production, but it is based upon the Two-Rock Custom Reverb model, which is still available.

At 2:20 In this Rig Rundown, John Mayer is shown to have an older model Band Master, running a vibrato channel

In the YouTube video "John Mayer on Periscope - Gear Talk," John Mayer is seen using the Paul Reed Smith Custom 50 amplifier towards the end.

0:10 onwards we see Mayer using the amplifier. (the video is a demo and advertisement for the amp itself

"No compromise amp designed with John Mayer.

The J-MOD 100 amplifier was intimately designed by Paul Reed Smith, Doug Sewell, and John Mayer to not only handle Mayer’s live work with Dead & Company, but to also move seamlessly into recording and performing Mayer’s solo work. With a thoughtful control platform, impeccable build, and high-quality components, the J-MOD 100 is a fully-realized, high-end piece of audio gear for players who want the purest and most expressive musical experience. Thoughtful control platform and feature selection.

The J-MOD 100 amplifier is a single channel amp featuring a switchable gain stage and effects loop. The amp’s tone stack features a beautiful, spread out tone that is at once huge and clear. When the gain stage is kicked in, the amp gets rich in harmonics and delivers a bit more bite. The versatility provided by this setup allows the J-MOD 100 to deliver a huge variety of sounds whether using singlecoils or humbuckers. Additional tone-sculpting features include a bright switch, which adds more high-end to your tone, and a presence control that boosts the high-end in the power amp section of the amplifier, giving you a livelier, more complex tone. There is no reverb built into the J-MOD 100, but an effects loop was requested by Mayer for his reverb tanks. The amp’s effects loop (and gain boost) is controlled by the footswitch, so players can use any reverb or effects unit desired with this amp. Elegant and robust construction.

The J-MOD 100 amp features five separate boards, all with over-sized traces for tonal integrity. Each board is dedicated to a particular part of the circuit: preamp section, power section, front panel controls, bias jacks, and the effects loop. Not only is this an elegant way to build with fewer long wires extending across a larger board, it is also a more robust way to build as there is not a single, large board that needs to flex during transport. The amp is hand-wired at PRS in Maryland, USA with a truly artistic level of craftsmanship. The J-MOD 100 also features a “laydown-style” power transformer for build integrity. High-quality components.

The J-MOD 100 pairs hand-crafted construction with top-of-the-line components, including a Cinemag output transformer and high-end capacitors in the preamp section. The result is authentic vintage tone with rich harmonics that sit at the player’s fingertips for a thoroughly expressive and transparent musical experience. Built with serviceability in mind.

Mains fuse, B+ fuse, and bias adjustment jacks are accessible on the back panel of the amp, so changes and adjustments can be made without needing to open up the amplifier. In addition, the amp will accept many different power tubes types, including EL34, 6CA7, KT77 (with re-bias)"

This amp´s purpose was to be served on tour with Dead & Company (a band that consist of the remaining members of Grateful Dead featuring John Mayer) accompanied by the PRS Super Eagle to pay tribute and get the Jerry Garcia tone (former solo guitarist of Grateful Dead, now deceased). As John mentioned in the PRS press conference at NAMM 2017, this amp was tweaked to also serve his solo career; more specifically the John Mayer Trio (featuring Steve Jordan on drums and Pino Palladino on bass).