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Description
Experience the power of the Marshall JMP-1 Tube MIDI Guitar Preamp, a rack-mounted marvel built to deliver the iconic Marshall tone. This robust preamp models four distinct Marshall tones, providing you with a wide spectrum of sounds to play with. Whether you're laying down tracks in the studio or rocking out on stage, the JMP-1's emulation of stereo sound ensures your performance cuts through with clarity and intensity. Compact yet mighty, this preamp embodies the spirit of Marshall, offering a blend of tradition and technology that will inspire any guitarist.
Key Features:
- Rack-mounted design for easy integration into your setup
- Models four different Marshall tones for versatile sound shaping
- Emulates stereo sound for a richer sonic experience
- MIDI compatible for enhanced control and connectivity
- Tube-driven circuitry for authentic, warm tone
Product specs
| Brand | Marshall |
| Model | JMP-1 Valve MIDI Preamp |
| Finish | Gold |
| Year | 1992 - 2007 |
| Made In | United Kingdom |
| Categories | Guitar Preamps |
| Electronics | Tube |
| Number of Channels | 1 Channel |
| Number of Inputs | 1 Input |
| Pedal Format | Rackmount |
| Reverb | None |
FAQs
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What type of sound can I expect from the Marshall JMP-1 Tube MIDI Guitar Preamp?
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The Marshall JMP-1 offers a range of classic Marshall tones, emulating four distinct sounds from clean to overdriven. It provides a versatile stereo output ideal for both studio and live environments.
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Is the Marshall JMP-1 compatible with MIDI devices?
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Yes, the Marshall JMP-1 is a MIDI-compatible preamp, allowing you to integrate it seamlessly with other MIDI devices for enhanced control and versatility in your rig.
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How does the Marshall JMP-1 perform in a live setting?
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The Marshall JMP-1 is designed for both studio and live use, offering reliable performance with its rackmount format and easy integration into existing setups. Its tube-driven sound is well-suited for live performances requiring dynamic tonal options.
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Does the Marshall JMP-1 have built-in reverb?
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No, the Marshall JMP-1 does not include built-in reverb. It focuses on delivering pure Marshall tones, so external effects would need to be used for reverb.
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What is the power requirement for the Marshall JMP-1?
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The Marshall JMP-1 requires a standard IEC power cable and operates on typical AC power, making it straightforward to power in most studio and live environments.
Videos
Michael Nielsen - Big Hairy Guitars
Marshall JMP-1 Preamp
Marshall JMP-1 Preamp
Michael Nielsen - Big Hairy Guitars
Marshall JMP-1 - In Depth Demo by Leon Todd
Leon Todd
Marshall Amp Demo (JMP-1 / EL-34 50/50) - Part 2 - Overdrive
Vladimir Shevyakov
ADA MP-1 vs MARSHALL JMP-1 GUITAR MIDI TUBE PREAMP SHOOTOUT / COMPARISON
Rick Hollis
Marshall JMP-1 Tones
Leon Todd
Marshall Amp Demo (JMP-1 / EL-34 50/50) - Part 1 - Clean
Vladimir Shevyakov
One Song, One Amp: Marshall Jmp-1 Pre-amp (clean, crunch, rock, leads & metal)
Sonic Drive Studio
JMP 1 Pre Amplifier with Marshall 9200 Stereo Power amp for sale
Wayne Guitars
Reviews
PROS
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Capable of a variety of tones, excels in Marshall signature sounds
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Flexible, can replace multiple boutique pedals
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Durable, remains functional after years of use
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Offers stereo setup capabilities for enhanced sound
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MIDI compatibility for modern rig integration
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Versatile for practice, jamming, and recording
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Compact size, consolidates Marshall tones in 1U rack space
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Includes a four-button foot switch for control
CONS
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Biased towards Marshall's tone palette, limiting versatility
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Clean tones not as authentic as Fender or Ampeg
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Higher gain tones lack the range of some Marshall heads
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Some find it expensive for its features
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Marshall JMP-1 Tube MIDI Guitar Preamp.
Features and functionality
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The JMP-1 features a unique tone stack with a mid or bass shift, and functions as a solid state/tube hybrid with an 8-bit microprocessor.
Source -
The JMP-1 requires a 130-volt power supply for the 12AX7 tubes, necessitating ample space for ventilation.
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The 90s Celestion G12T75 speakers are noted for their closer tonal match to the MCIS sound compared to post-2002 models.
Source
Comparisons
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Users suggest that modern digital preamps like the Axe-Fx can replicate JMP-1 sounds effectively, offering more versatility.
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The Metal Muff Mini is considered an underrated choice for achieving a hack-y MCIS tone similar to the JMP-1.
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The Empress Heavy Menace can mimic diverse distortion tones on clean rigs, offering versatility similar to the JMP-1.
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Sansamp GT2 in 'California' mode closely captures the Zero-type distortion associated with the Marshall JMP-1.
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The ADA MP-1 is noted for a "hairier" sound, ideal for late 80's/early 90's metal tones, while the JMP-1 offers a classic, mid-rich Marshall sound.
Source
User experience
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Some owners find the JMP-1's programmability and MIDI capabilities to be advantageous despite the complexity involved in setup.
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Owners of both units suggest that the ADA MP-1 covers a wider range of amp sounds, making it versatile for varied setlists, unlike the distinctly Marshall-sounding JMP-1.
Source
Use cases and applications
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The JMP-1 is preferred by some musicians for its ability to assign effects loops to specific channels, making it versatile for studio recording.
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The Filter 'Short Bus' and Ministry 'Mind' distortion pedals are modeled after the Marshall JMP-1 tone, specifically for high-gain, industrial sounds.
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The JMP-1 is recommended for achieving a warm, mid-focused tone, suitable for players who prefer a consistent Marshall sound across different performances.
Source
Value and pricing
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Used JMP-1 units are priced high due to limited supply and demand, with prices ranging from $600 to $1000 on Reverb.
Source
Critic Reviews
4.5 out of 5
Based on 5 Reviews and 34 Ratings
41029
the only preamp I can remember owning
put an alesis 3630, 3631 or any studio VCA unit with soft knee in the loop, set for mild grab and a huge make up gain boost and you will have the preamp sound of every dirty MCIS rhythm tone short of 'to forgive'. Do more grab and less makeup gain on a clean channel and you have the clean tones sans effects. You don't even need the mesa power amp, DI it and then throw an impulse of a stock 1960B cab powered by a tube power amp on it and that's that. Not a easy to cop the ZZ top live sounds though. This was supposed to approximate every Marshall tone you could think of but it se approximation of anything but the higher gain heads like the jubilee and the 900s. Not one of my favorite pieces of kit when I had it but I miss it now that its gone because it has its own sound. These have become quite expensive as of late.
875
awesome preamp
this thing is so versitile! Would recommend, as long as you are either running a pedal (i run the marshall jackhammer through it and LITERALLY transforms the sound into something 1000x better, i was so suprised for a cheap pedal!) or running through a tube power amp. Very cool preamp though
280
My main preamp, my main voice
I use this preamp at live shows and in the studio. A very versatile preamp with all the legendary Marshall tones
41029
I have been tempted to buy one of these for when I want channel switching ever since the 90s and always chicken out because of all the ICs involved in the circuit, its just so untubey, but people who hav them love them, so...... either those people are crazy or I should break down and get one?
Artist usage
Add artist
Kirk Hammett used the Marshall JMP-1 Tube MIDI Guitar Preamp, as noted on Angelfire.
1994 interview Guitar World - REZNOR: Almost everything was direct--there was almost no miking of cabinets. I just don't like that sound very much. It sounds boring to me. So we ran through a variety of preamps and speaker simulators. Our main preamp was the new Marshall JMP-1. But I didn't use the speaker simulator in it. I took the direct out of the Marshall into the Zoom 9030, employing just the speaker simulator on that.
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"Dave's current rig consists of two JMP-1 preamps, two EL34 100/100 power amps, four PB100 Powerbrakes and eight 1960BV 4 x 12 cabinets."
In this interview, it says, "He still had his Marshall 1960A cabinets, but Corgan shifted to a Mesa Boogie Strategy 500 and a Marshall JMP-1 preamp (Corgan also notes that he used an Alesis 3630 to drive extra gain into a Marshall)."
"After the two effects we have about six amplifier outs. Two of the outs go to my Voodoo Modified JMP1 Marshall heads. The Voodoo mods make these amps amazing. They sound so much better than they used to. We have two of them: the main one is setup for Billy's main dirty sound and goes to the Marshall 120-120 power amps; the second Marshall JMP1 has a clean sound that goes to a direct box straight to tape for recording purposes because they record every night," says Billy Gibbons's guitar tech about the Marshall JMP-1 Tube MIDI Guitar Preamp.
You can see it here in his rack
to quote the important part of the article in a verbatim manner: "For the second record, Thompson started using a Marshall JMP-1 pre-amp. Shortly thereafter, he came across the VHT PitBull Ultra Lead, which he switched to and used on the next few records."
A Marshall JMP-1 Tube MIDI Guitar Preamp appears in this Josh Klinghoffer rig rundown video.
At 0:33 of this private gear tour, Stephen Carpenter of Deftones shows off some of his gear, including a Marshall JMP-1 Tube MIDI Guitar Preamp.
At 1:36, Dave Murray, of Iron Maiden, has two Marshall JMP-1 being displayed.
Used by Smith during Iron Maiden's "Brave New World" tour.
Album Usage
The Marshall JMP-1 Tube MIDI Guitar Preamp has been featured on the following albums:
Reidolized (The Soundtrack to the Crimson Idol)
W.A.S.P. (2018)
Human
Three Days Grace (2015)
The Revelation
coldrain (2013)
Deviant
Pitchshifter (2000)
Brave New World (2015 Remaster)
Iron Maiden (2000)
The Fragile
Nine Inch Nails (1999)
Mellon Collie And The Infinite Sadness (Deluxe Edition)
The Smashing Pumpkins (1995)
Hysteria
Def Leppard (1987)
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Marshall JMP-1 Tube MIDI Guitar Preamp, it is most commonly used with the following gear.
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Community setups
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