John Mayer Signature Amp - The J-MOD100


I love quilts!
Aug 13, 2012
John Mayer J-MOD100. Looks pretty cool. PRS amps should be a fantastic this year. Lots of new stuff. Still waiting for the Tremonti amp details.....

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 with 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 ampli er is a single channel amp featuring a switchable gain stage and e ects loop. e 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. e 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. ere 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).


Watts: 100 (nominal)

Channels: Single-Channel with Switchable Gain Stage and Effects Loop

Power Tubes: 4 x 6L6

Preamp Tubes: 4 x 12AX7/ECC83S

Output Transformer: Cinemag Texas 100

Output Jack Configuration: Two parallel Jacks with 4 and 8 Ohm selector switch, one 16 Ohm jack. (3 total jacks)

Bias: Fixed (adjustable)

Dimensions (unboxed): 26” wide, 10” tall, 10” deep Weight: 39.8 lbs

Colors: Stealth with salt and pepper grill cloth and gold piping

Effects Loop: Series

Available Configurations: Head

Front Panel Controls

Clean Channel: Volume, Treble, Mid, Bass, and Bright Switch

Gain Stage: Volume and Output

Global Controls: Presence and Master

Included Accessories: Footswitch – effects loop and gain boost on/o

Suggested Cabinet Pairing: JM 2x12 Closed Back Cabinet

*Speaker cabinet sold separately.

*This is a PRE-ORDER and we expect delivery beginning in April, 2017.
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eh. Promising but I still don't see myself ever being interested in PRS amps.... Yet. We'll see what comes out in the next few years...
I wonder if (hope) there will be a lower wattage version. I dig the heck out of JM and I think he gets some genius tones, but I just don't need 100 watts. 30-50 would be ideal for me.
Looky what we have here.....

Man, I was really hoping this was something in *my* realm of possibility, but I should have realized this amp is for the high rollers...
Here's to hoping sometime in the future we get a lower wattage, somewhat affordable version! In the meantime, cannot wait to hear this Beast!
So happy that Mayer has come to PRS, as this company just keeps pushing forward and creating fantastic musical equipment....
I love PRS amps, use 'em in my work; love the expressiveness and tone of my HXDA and DG30. And I'm a sucker for great sounding 100 Watt 6L6 amps.

And...singe channel amps are my thing, so...

I guess I'd better plan on one of these. ;)
I wonder if (hope) there will be a lower wattage version. I dig the heck out of JM and I think he gets some genius tones, but I just don't need 100 watts. 30-50 would be ideal for me.
This. There just isn't nearly the same market for huge amps like there used to be. It's way too easy to mic a smaller amp these days.

Unrelated, but I'm also super curious about the rumored Tremonti amp. Maybe we'll hear something about that at Namm this year?
Expensive, but it's about what my old Two-Rocks went for, and they were worth the dough. I'm interested despite the price.