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.

Item can be visible in Steves backline inbetween stacks and speaker cabinets.

since i have one myself i instantly recognized it!

“I was sitting in with this guitar player in Austin I knew—Alan Haynes—and he let me check out this Vibro-King he had just bought... Before I got off the stage I knew I needed one. Zapata had one, and he really didn’t like it, so I snagged it up from him quick. I love how it breaks up. It’s really chunky and nasty, and it has very pretty-sounding reverb, too."

"This is the main [amp] here. What I'm doing is I'm running the speakers upstage facing away. I have another Vibro-King back there that I'm essentially just using as a speaker cabinet. So I have it unplugged and then I have a speaker cable running back there, and then through a female-to-female barrel jack it's just going straight into the speakers there," says Jeff Beck's guitar tech. The main settings used on this amp are dwell (1), mix (1), tone (1), volume (5), treble (7), bass (3), mid (9), speed (3.5), and intensity (1).

In this Fender video interview, Ed O’Brien discusses his Fender Vibro-King combo amp: “I start with the guitar. So I start with a true guitar, one that speaks to me. So it’ll be a Strat probably. And then make sure I’ve got a good amp. So on the last tour, I used Vibro-Kings, and in my humble opinion, it’s the finest big amp out there. I’d had a setup that I hadn’t changed for years and years, since the very beginning, since 1992. I A-B’d it, the Vibro-Kings, with - I had a day in our studio - and to me, I was just like, ‘this is the one.’ And the reason I sort of went for it was because I remember watching Live 8, that was 2005… and Pete Townshend’s guitar sound was just off the scale. To me it was the finest sound there. And I just thought, ‘OK what’s he playing?’ And, 'OK, he’s got a Clapton Strat. And what’s that thing? It’s called a Vibro-King,' I’d never heard of a Vibro-King. I was intrigued, and it works great with my setup, because it’s great if you go straight into it. But also coloring it with effects and stuff like that works great.” (5:43)

In the video titled "The Who Rig Rundown with Pete Townshend & Jon Button" by Premier Guitar on YouTube, at the 6:46 mark, Pete Townshend's guitar technician, Simon Law, discusses the Fender Vibro-King Custom 60W 3x10 Tube Guitar Combo Amp Black, confirming its inclusion in Townshend's gear setup.

"Taking a look at the other amps in his repertoire – such as a ’59 Fender Bassman Reissue, a Fender Vibro-King 60 watt combo, a ’69 Marshall JMP50 Plexi head and a Marshall 1987X Vintage Series 50 watt tube head, among others..." states this article, about Tom Petty, by Pro Audio Land.

Ryan Adams - in the early days with the Cardinals (2005-2007,) used a Fender Vibro King along with between one to three Princeton Reverbs, depending on venue size. He also used one or two Vibro King 2x12 cabs with this setup. He can be seen using this setup in any live performances from this era to include the Letterman performance of Let It Ride and the Avatar Sessions.

Sayce used that amp and a Vibrolux at 2019 Mediterranean KTBA Cruise

“I still have the Fender Super Reverb and use it for recording sometimes, with a Fender Vibro-King as a second stage amp, but the Matchless Clubman 35 is my main amp - Class A 35 watts with a 4x10 cabinet, and I use two of them. Jimmie Vaughan used the same setup for a while." -Robert Cray

Generally used alongside the Twin Reverb for his clean sound, the amp also provides a tremelo effect, as well as reverb which Goto uses at a low point for the "bounce" in his sound (around 1 to 2 in gauge)

Álvaro usa este amplificador en vivo y en su estudio, principalmente lo usa en casi todas sus presentaciones con los pettinellis, sin embargo esta foto pertenece al gran concierto sorpresa de los tres en su formación original en la plaza de armas de concepción el 12 de octubre de 2023.