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Paul Reed Smith PRS John Mayer Signature J-MOD 100 Head and 2x12 Cabinet
Paul Reed Smith PRS John Mayer Signature J-MOD 100 Head and 2x12 Cabinet
Paul Reed Smith PRS John Mayer Signature J-MOD 100 Head and 2x12 Cabinet
Paul Reed Smith PRS John Mayer Signature J-MOD 100 Head and 2x12 Cabinet
Paul Reed Smith PRS John Mayer Signature J-MOD 100 Head and 2x12 Cabinet

Serial Number: SQ3037748

Paul Reed Smith PRS John Mayer Signature J-MOD 100 Head and 2x12 Cabinet

Regular price$7,080.00
Shipping calculated at checkout.
  • In stock, ready to ship
  • Free Continental USA shipping
  • Setup and inspected by our tech team
  • Contact us about 90 day layaway with 25% down

Call 315-447-3243

Available only at PRS Signature Dealers like Ish Guitars - the PRS J-MOD 100 is one of the most sensational amps to ever be created. We personally played through a J-MOD at the 2017 NAMM show and it was incredible. It seemed to have a little bit of everything; some Fender, some Marshall, some Vox, and lots of Dumble. 


Like John Mayer's PRS Super Eagle guitar, the J-MOD has a sound all of its own, yet with the perfect amount of classic inspiration. The head is $5990 and the 2x12 Cabinet made to match is $1090. We can separate if needed. 

Open and Expressive

“I think amplifiers are such interesting, complex animals. The J-MOD 100 is the result of a lot of searching...what is my sound? What are the elements of all these amps I own that should be chosen to go together in one amp and have this really distinct voice? What we ended up with is a really open and expressive amplifier that I feel is a real evolution and a step forward in guitar amps." – John Mayer

No compromise amp designed with John Mayer.

The J-MOD 100 amplifier was intimately designed by Paul Reed SmithDoug 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).


Wattage (Nominal): 100


Preamp Section: Volume, Treble, Middle, Bass, Bright Switch

Gain Stage: Volume, Output, Bypass Switch

Output Section: Presence, Master, Effects Loop Bypass Switch


Inlet: Fused Power Inlet (IEC)

Effects Loop: Loop Return, Return Level, Send Level, Loop Send

Bias: Fixed Bias, Adjustable (bias jacks accessible from back panel)

Extension Speaker Jacks, 3: 2, Parallel with 4 and 8 Ohm selector switch & 1, 16 Ohm jack

Ohms: 4, 8, 16 Ohms

Channels: Single Channel with Switchable Gain Stage and Effects Loop

Output Transformer: Cinemag Texas 100


Cabinet Material / Construction: Pine, Fingerjoint

Covering: Stealth

Grill Cloth: Untinted Salt & Pepper

Piping: Gold


Power Tubes: 4 x 6L6

Preamp Tubes: 4 x 12AX7/ECC83S


V1: 12AX7, Input Gain Stage

V2: 12AX7, Overdrive Gain Stage

V3: 12AX7, Effects Loop

V4: 12AX7, Phase Inverter


Amp Width: 26"

Amp Depth: 10"

Amp Height: 10"

Amp Weight: 39.8 lbs

Included Accessories: 2-Button Footswitch (Gain Boost On/Off, Effects Loop On/Off)

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Ish loves PRS

We go beyond your typical guitar store. Each instrument is inspected at our in-house luthier shop before, during, and after its stay with us.


Fantastic company. Answered my email promptly and shipped very quickly! I highly recommend Ish Guitars!

Robert, PRS Custom 24 Piezo

Awesome transaction! I bought a pretty special guitar (previously owned by a famous guitarist), and Ish nailed it. Ethical dealer, quick ship, and fast responses. I look forward to doing business with them again in the future!

Devin, L'arrivee D-60

Awesome guitar. Came with a perfect setup and no issues. Would love to buy another guitar from you guys.

Matthew, Music Man Cutlass