Marshall JMP-1 Tube MIDI Guitar Preamp

"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.

A Marshall JMP-1 Tube MIDI Guitar Preamp appears in this Josh Klinghoffer rig rundown video.

According to Jason and his guitar tech, Calvin Roffey, who were interviewed for the making of this rig diagram, Jason had a JMP-1 preamp in his rack gear.

In this concert of 1994 Geordie is using a Marshall JMP-1. The preamp can be seen right at 4:34.

In this rig rundown at 0.50 Dusty's tech goes through his signal chain.

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.

Listing correction

[This article](http://www.premierguitar.com/articles/Rig_Rundown_Bushs_Chris_Traynor), by Premier Guitar, states that Traynor "uses a Mesa Boogie Dual Rectifier (first revision) with a Divided by 13 FTR 37 (not pictured), which he also relies upon heavily in the studio. He likes combining the characteristics of multiple amps to achieve his tone, also using a Marshall EL34 100/100 and a Marshall JMP-1…"

You can see it here in his rack

@ 10:37 of this video it shows Phil's 2 Marshall JMP-1's. Phil has 2!

"Your live rigs have changed quite a bit since the late ’90s. Ken, you used to rely on a Marshall JMP-1 preamp and VHT 2150 stereo power amp into a Marshall 4x12, while Greg was using an Ampeg SVT II head with a matching 2,000-watt 8x10 loaded with David Eden speakers. Now you’ve both become big proponents of Fractal Audio Axe-Fx II modeling units running to the monitors and house systems," reads [this article](http://www.premierguitar.com/articles/22683-failures-monster-comeback?page=2).

Rack-mount pre-amp with 4 channels (2 clean, 2 overdriven), MIDI connections, programmable stereo effects loop, and speaker emulation. When playing live, James has not one, but two Marshall JMP-1 pre-amps beneath one another.

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."

At 1:10 in this video, one can see Jody Davis' rack, which has a JMP preamp along with a G-Force.

"I’m still using the Diezel VH4’s and Marshall JMP1’s which are modded by Trace [Davis] at Voodoo Amps…" says Barry Stock, in [this interview](http://www.guitarworld.com/three-days-grace-guitarist-barry-stock-discusses-gear-and-new-album-human).

In [this interview](http://www.emusician.com/gear/1332/signal-to-noise-the-sonic-diary-of-the-smashing-pumpkins/40242), 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)."

Vivian uses two Marshall JMP-1 preamps, according to [Guitar Geek](http://www.guitargeek.com/vivian-campbell-def-leppard-guitar-rig-and-gear-setup-2011/).

At 0:33 of this private gear tour, Stephen Carpenter of [Deftones](http://equipboard.com/band/deftones) shows off some of his gear, including a Marshall JMP-1 Tube MIDI Guitar Preamp.

You can see at 33:18 the gold Marshall preamp in the rig.

On band site Equipment Used: 2 Cort G series guitars. A Marshall JMP-1 Preamp. 2 Valvestate 80/80 poweramps.

Two Marshall JMP-1 Tube MIDI Guitar Preamps (ones a spare) exist in Mike's setup.

Used with Lotus Crush and Apollo Under Fire

“The whole thing started with the guitar riff,” Chris explains, “a big heavy metal-sounding thing. We basically got a click going, then we recorded the riff. I like tube gear, so I use a Mesa/Boogie TriAxis for the big sounds, and also a Marshall JMP-1 [both rack modules]. They’re the best sounding and most natural recording boxes I’ve found for guitar. I use a Line 6 Pod too, but more for the clean stuff.” For this track, the guitar was recorded through the TriAxis into a Neve mic pre, into a Yamaha 02R, and onto the Apogee Rosetta AD en route to Pro Tools. “I tend to use the Neve channel for guitars,” says Chris, “the APIs for drums, and the Summit TD-100s and GMLs for synths.”

Here on marshalls website they note janick plays a jmp-1, jfx-1 and 9200 POWER AMP 100W

In this 1996 Guitar Player Magazine [interview](http://www.robinguthrie.com/interviews/guitar-player.php), Robin Guthrie says: "for the more distorted sounds I use a Marshall JMP-1 preamp."

At 1:36, Dave Murray, of [Iron Maiden](http://equipboard.com/band/iron-maiden), has two Marshall JMP-1 being displayed.

Jerry Horton of [Papa Roach](http://equipboard.com/band/papa-roach), states, "I use a Marshall JMP-1…", in an [interview](http://www.guitarplayer.com/miscellaneous/1139/papa-roach39s-jerry-horton-on-tones-riffs-and-survival-skills/17013) with *Guitar Player*.

Here you can see the Marshall JMP-1 used in his rack setup. Below is the direct link for the JMP-1s, equipboard.com thinks it's a bad URL. http://www.thecustomrackshop.com/#!/zoom/ce11/imagech0

He used it in many of his videos

This article lists Frank’s gear.

This video, which was taken at a talk show in September 11th of 2016, shows three guitarists performing selections of their own compositions before doing an interview, followed by a jam session. Syu is shown to use a rackmount Marshall JMP-1 to emulate the high-gain tones for his solo performance. This can be seen at the beginning of the video, exactly at 0:03.

Spotted in the rackmount unit on the left of the photo in his interview with Scandinavian Traveler: https://scandinaviantraveler.com/sites/default/files/styles/inline_large/public/thomas-gson-keyboard-1140x500.jpg

"with a Marshall JMP-1 Preamp"