Marshall Jmp-1 user reviews ( 7/10) - 24 user reviews

• 02/25/13

  tonejunkie99's review "JMP-1=G System=Marshall 100/100= stereo 4x12 cab"

  Characteristics

  we control and use the preamp with a G System, power it with a EL34 marshall 100/100. and run it into a customized stereo 4x12 marshall cab. I mount the 100/100 in a separate rack because I sometimes just carry the preamp out to use with other set-ups. without writing a book, my background is 25 years of playing in working bands, and having said that, I was always hard core plexi and really love the sound of superlead stacks. My old school rig was 2 JMP 1/2 stacks. I later went with a wet/dry combination, in other words I send all the effects to one wet/amp and keep the other amp dry. when I went to the wet/dry configuration, we sometimes used a modified JCM-800 head on one of the cabs. anyways long story short, a good friend passed away and he wanted me to have his Rack rig. It literally sat in a corner of the warehouse for 3 years until another guitar player took the covers off the racks to see what was inside and went on and on about how awesome they are and who all uses them still to this day, so we hooked it all up and ran it stereo into 2 4x12 cabs with vintage 30's... literally we all went nuts over this thing... I think anyone who likes marshalls would like the JMP-1 we have had all kinds of preamps over here, and ever since we started using this one, it's really sparked some creativity.

  Utilization

  It's the most simple preamp to use I ever seen. very straight forward it has the typical Marshall stuff, Volume, Gain, Bass, Middle, Treble, Presance. It has an effects loop and you can adjust the mix. It has a bass shift. 2 stages of overdrive, and 2 stages of clean. you can save up to 100 presets, and control it with midi... It has no onboard effects.

  Sounds

  Most the night it's reissue les pauls through it. I do a switch and play about 5 songs with a 1963 strat. My pickups are hand wound and read around 9k. the strat pickups were rewound by a old man in Dallas Tx named Vanzandt, he passed away around 1999 I believe... anyways I dont use extreemely high output pickups, so these guitars will sound perhaps a little brighter than some. I change the volume pots in les pauls to 500k pots and although the JMP-1 dosent clean up as much as a big plexi, it cleans up enough for me. With the volume knob you can go from a RATT(or worse) type gain down to a "All Right Now" type tone, and 74 Jailbreak would be in there somewhere also. our music is Power Rock, most comparable to 70's 80's. the tones from this rig without effects is straight-up AC/DC sounding, cleaner settings like Free/Bad-Co. If I add a little more gain, chorus and delay it's totally 80's. on clean settings with chorus it sounds kinda like Purple Rain. With a Flanger it sounds kinda like Pat Travers rig or V-H Unchained. with volume knob technique and a-lot of delay set around the high 400m/s range it will Nail the cathedral sound. one issue I have is you loose a lot of db when switching from od to clean settings.

  Overall Opinion

  I like the sound of it. it was given to me, but I would hunt one down if I lost this one, I would probably have to pay around $400. to get one used on ebay todays prices. we have had almost every kind of preamp in here you can think of. I like this one because it sounds good and it's simple. It's not loaded with effects and it wont sound like a fender, which is good for us, but not for everyone... if you mounted this JMP-1 in a rack next to a POD the pod would have a depressive meltdown and cut on itself.
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• 11/17/12

  racerevlon's review "A great alternative if you don't have $$$ for a JVM!!"

  Characteristics

  The JMP-1 is a valve MIDI preamp. Let's break this down into components. Valve: there are two 12AX7/ECC83 valves on-board that help the preamp generate the gain and the classic Marshall sound. MIDI: the preamp is MIDI-controllable in addition to the simple 4-button foot switch and has 100 user preset locations. Preamp: I think this is where most people get confused. This is a preamp ONLY--it still requires a power amp, whether you have a dedicated rack power amp, or you run into the loop return of an amp head, you'll need a way to power this unit. The only exception is if you're using the emulated out to record directly to a console. All of the usual suspects are on-board: Bass, Middle, Treble, Presence controls, a mix for the effects loop, individual buttons to select each channel, and a "Bass Shift" feature that alters the frequency range affected by the tone controls. There are standard mono or stereo output jacks for connecting to a power amp, emulated line out jacks for connecting directly to a recording console, and an effects loop with a -10/+4 button for connecting and controlling the effects loop. All in all, fairly flexible for a 1U valve preamp.

  Utilization

  The JMP-1 on its own is only half of the equation. I've heard a JMP-1 sound absolutely atrocious through one type of power amp, then absolutely magical through another type of power amp. You have to keep in mind what's down-stream of the JMP-1 to ensure you get the best sound out of the preamp. Historically, the selection dial on most of the earlier units was "jumpy" and didn't track very well, something I heard Marshall fixed in later releases. The preamp is simple enough to use if you spend five minutes playing around with the controls and learning what every control does. Saving MIDI parameters is simple enough, requiring only a double-press of the "Store" button to save a MIDI preset/patch.

  Sounds

  I've owned this unit long enough to know that experimenting with different types of tubes DOES make a difference. The best sound I've got from the JMP-1 is using Mesa Russian-2 tubes, which is what I still use today. That said, it's really easy to make the JMP-1 sound horrible. My suggestion, as with many things, is to dial in the JMP-1 with your ears and not your eyes. The B/M/T/P controls range from -6 to +6 but don't set the controls where you "think" they should be, set the controls where they sound the best to your ears. If you find that you get a great sound with the bass set to -6, so be it. Don't let your brain override your ears by thinking, "well, that can't be right--there's no way it could/should sound good with the bass fully cut." It can and it will. Always keep in mind this is a PREAMP, not a full amp. If you like the idea of Marshall's latest offering, the JVM series but don't have the cash, a JMP-1 and a good power amp are an excellent compromise. You get four channels, each with a gain control that ranges from 1-20. Even on the clean channels, you can get some good bluesy crunch if you crank up the gain and have fairly strong valves on-board. The key is that you have to spend time dialing in the sound you're looking for with the JMP-1, again, with your ears, not your eyes, and always be mindful of what you're using for power and speakers. Taking something like the JMP-1 and plugging it into a cheap solid-state power amp with cheap speakers will sound, well, cheap. However, go the other direction and run the JMP-1 into a nice valve power amp like a Marshall EL34 50/50 or 100/100, VHT 2/90/2, or even a Mesa 20/20, and you'll get MUCH better results. I run my JMP-1 into a Marshall EL84 20/20 and can get so many great sounds out of it that I actually sold my JVM410H. Just like a pedal/stomp-box, the JMP-1 is ONE piece of a larger puzzle.

  Overall Opinion

  The JMP-1 is incredibly flexible and puts a ton of different tones right at your fingertips. You can go from Jazzy clean to death metal with almost no effort. Now that they're out of production and prices are way down, I think the JMP-1 is an excellent value for the price, especially considering that the emulated line out, while sounding "slightly" what I would describe as "transistor-y" is still absolutely viable if you're recording on a budget. I've also owned an ADA MP-1 and would say that they're two different beasts. The JMP-1 interface is much easier to master, but the MP-1 has the on-board light chorus effect that really punctuates the 80's rock sound. Being a rack unit, it's somewhat of a pain to experiment with different tubes but once you find the sound you like you're good to go. Many modern players/bands (Iron Maiden, Def Leppard, Billy Gibbons, etc.) still use the JMP-1 as a staple of their live tone due to its MIDI-switching capability and its virtual warehouse of almost the entire Marshall tonal history. If something were to happen to mine I would replace it without hesitation.
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• 04/06/11

  iamqman's review "Garbage"

  Characteristics

  Marshall has taken the biggest hold on the guitar amplifier world and completely pissed it down the drain. Sure people will still buy amps from them because they don't know what Marshall is now and they have some a strong hold on the market. Don't get me wrong I love Marshall the way Marshall used to sound. Now they just put out trash after trash. This preamp is no different. At least they discontinued this unit for now. I hope they are re configuring this thing because it sound like trash!
  
  
  
  FEATURES:
  
  
  
  * OD-1/Classic Overdrive channel - smoldering power will take you from a Super Lead Plexi's molten gold through to searing modern metal.
  
  
  
  * OD-2/Modern Hi-Gain channel - tightly focused high gain drive by the truckload. Modern and aggressive, yet fluid and toneful, this stunning channel will give you all the distortion and sustain you'll ever need.
  
  
  
  * Clean 1/Warm, Clean channel - for warm, full bodied chords, fat clean lead passages and jazz tones.
  
  
  
  * Clean 2/Bright, Clean channel - has the glassy edge of a JTM45 and will give all of the bright, jangly tones you could wish for.
  
  
  
  * Each channel includes the following programmable controls: Volume and Gain (0 to 20), Bass, Middle, Treble and presence (rainging from -6 to +6). A Bass Shift option re-shapes the low end character of each channel, too.
  
  
  
  * Stereo Effect Loop is 100% programmable from 0 (fully dry) to 12 (full effects) and has level selection (-10dB or +4d) to match your effects processor.
  
  
  
  * Each channel and parameter selection is made by pushing the relevant key and then adjusted by using the rotary Master Data control. Once you've dialed in a sound you want to savem simply press the Store Key twice. Recall is instant either from the front panel, via the optional Marshall 4 way footswitch (MPM4E), or via MIDI.
  
  
  
  * The JMP-1 has MIDI IN, OUT, and THRU connections plus a mapping facility. You can also select the channel (1-16/Omni) on which MIDI messages are transmitted and received by the JMP-1.
  
  
  
  * Left and Right Outputs are switchable between -10dB and +4dB.
  
  
  
  * Also features Speaker Emulated Outputs.
  
  
  
  * Dimensions: 1 U Rack (260mm depth)
  
  
  
  * Weight (Kg): 4.5
  
  
  
  * Preamp Valves: 2 x ECC83 (12AX7A)
  
  
  
  * Footpedal: MPM4E (optional)

  Utilization

  It does have tubes in it but who would have known. It sounds very sterile and fake. This is a beginners intro to preamps. I know that Janick from Iron Maiden uses this preamp but I'm not sure if he has it with anything else or if it is modified.
  
  
  
  Anyway, you can control a host of presets with midi functionality. So it is quick to fire up a preset sound on the fly for gigging.

  Sounds

  The sound you get from this unit is sub par. Many users of Marshall over the years have said that this is Marshall's worst offering that they have ever created. There is nothing this thing can do to make it sound natural or anything like a JMP or a JCM 800. It is just bad!

  Overall Opinion

  It does have a Marshall British tone but it isn't something that you will enjoy playing will. You can find these units for around $500 or so used but save a few more bucks and get yourself a JCM 800 used. Slap a Boss SD-1 in front of it and you will get a tremendously better tone than you will ever get with this piece of tin.
  
  
  
  I woulnd't recommend this preamp to anyone with the money that thy are going for. If you get it for free then maybe but save your self some time and effort and just move on past this. If you need decent preamp get an AD MP1 and get it modified for what you'd pay for this thing.
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• 12/01/10

  moosers's review

  Characteristics

  The Marshall JMP-1 is a valve based guitar preamp, offering a single space rack mountable unit for use with electric guitar. It’s great for the home or professional studio owner who doesn’t necessarily want to always set up an amplifier for recording guitars. The unit has two valve tubes (ECC83’s to be exact) inside of it, so you’re getting a pretty realistic sound for something that isn’t actually a traditional amplifier. It’s got ¼” jacks for input and headphones in the front. I’m not really sure what other types of connections it has since the one that we have at the studio where I work is racked up and hooked up to the patch bay already.

  Utilization

  There’s a whole lot that can be done with the Marshall JMP-1, a lot of which I haven’t even tried to use it for. One of the smaller producer’s suites that we have at the studio complex where I work has one of these in there, and it’s definitely best suited in this sort of setting where you might not be able to use a real amplifier. It’s also great for beefing up tracks that you’ve already recorded with an amp. There are four basic channels in here – two overdrive channels and two clean channels, each with controls for presence, gain, volume, and bass, middle, and treble EQ control, as well as a Bass Shift control which messed with the low end of your signal a bit. Like any digital device, you can store and recall your settings quite easily. I haven’t seen the manual for this, but it would definitely be helpful to have if you can get your hands on it.

  Sounds

  The sound of the Marshall JMP-1 is about as close to a real amplifier sound as you’ll get outside of using a real amp. I’ll always try to get a real amplifier sound when possible, but have been using this here and there if I’m looking to beef up a pre-recorded sound or adding a new part if I’m not able to use the original amplifier I used. I love the versatility that you’re getting with the JMP-1, as it gives you more options than you could get with a traditional amp, and the real valve tubes give it a realistic sound, which isn’t something you can say for most of the units out there like this…

  Overall Opinion

  If you find yourself looking for a device to record guitar directly into your DAW, but don’t want to compromise too much in realistic sound quality, the Marshall JMP-1 is the perfect place to start. I haven’t seen too many other units like this one out there that offer a realistic sound in such a compact box with this amount of flexibility. It’s still not a replacement for a real amplifier, but it’s about as close you’re going to come…
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• 07/19/12

  Last Chance's review ( translated ) Improve this translation " The sound "Marshall"!"

  Characteristics

  Tube preamp (2 12AX7s) 1U rack ... controllable via MIDI!
  
  
  
  I will not repeat what was said above ... this is not the purpose of my review!

  Utilization

  Configuration quite simple ... it was all inclusive in 5 minutes!
  
  The manual is useful since it explains the settings of the factory presets, and how to reset it if necessary. Apart from that, the "normal" use is fairly intuitive!
  
  
  
  The sound ... well this is THE Marshall. If you're part of critics, is dropped, otherwise, we try out of curiosity and it gets a good slap in the face!

  Sounds

  This amp is quite versatile!
  
  
  
  Then the clean, first of all: this is not the Fender, of course, but personal, I find them really beautiful, as long as we try to make it look good! Indeed, the knobs are quite accurate and efficient! They go up to 13 so to speak, since the possible settings of Low, Middle, Treble and presence range from -6 to 6!
  
  Regarding the volume and gain, levels adjustments, they range from 0 to 20!
  
  
  
  Crunches (OD1) are really terrible ... ACDC and company are there!
  
  It's a bit like the JMP1 ... these distorted sounds more or less legendary.
  
  
  
  Then, passing in OD2, then using the "bass shift", which thickens the low frequencies, we reached the big distortion. Sure, it will not "hi gain" modern, but if we attack well, we arrive at satisfactory results for riffs ... LE gain is there, trust me!
  
  
  
  Ultimately, there are 4 channels ... clean 1 and 2, OD1 and OD2!
  
  on the other hand, as there are hundreds of presets available, you can adjust in many ways ... and therefore have many different EQ settings on an "even" channel somehow (I hope I ' I was clear!?)
  
  
  
  Short! Nothing displeased me in there!
  
  
  
  I plugged in several PowerAmp! In particular, the Marshall VS8008, the Rocktron Velocity120, and the only three lamps, the ENGL E840/50.
  
  The best record is the ENGL, it's true. It adds body, palm mute, it sounds "little less" than the others! A bit like a 2x12 turned into a 4x12!
  
  The Velocity, for the transo, has made a very good, probably thanks to the settings of "contour" which it is provided, and that does not have VS8008.
  
  The VS8008, meanwhile, is rather "reserved" for home use ... it will be less "rough" at high volume. However, for less than 100 euros, it remains a PowerAmp for any situation!

  Overall Opinion

  I use it for 2 1/2 years.
  
  It suits me perfectly.
  
  I tried (and owned) several preamps in a rack ... (ENGL E530, Peavey Rockmaster, Rocktron Piranha ...). I have them all beloved, but the grain of Marshall JMP1 is unique!
  
  The price performance ratio is really good!
  
  Its price has changed much in Cygnus 2 to 3 years ... It has grown from 250 to 300, then returned to 250, etc. ... Maybe because of supply and demand!?
  
  I would not have to redo this choice because I keep mine.
  
  
  
  PS: there's a sale in my ad, but it is a second that I have in my possession for some time and which belonged to a friend ...
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• 09/04/10

  jomo59's review ( translated ) Improve this translation " I love ... Fully adopted."

  Characteristics

  everything has already been said on this preamp and these features ...

  Utilization

  Very simple, no need for manual, everything goes in a logical and simple.

  Sounds

  I play rock, blues, folk, variety, etc. ... This preamp can be easily adapted to all styles with a sound quite wonderful. I use it with different effects in my rack (Quadraverb, Compressor ART, ART SGE effect, etc ...), in full stereo output Microcab ADA or ADA power amp to 2 Marshall cabinets 4 x 12 ').

  Overall Opinion

  This amp is awesome and extremely versatile.
  
  Despite some critics and other blah-blah-blah some purists sickly, it is more than equal in most cases and appreciated by many music professionals for its efficiency and sound qualities. It is simply very very good (if notemment bump in stereo is a killer), if indeed it is used in a string where the remaining elements are up to scratch, of course ...
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• 01/06/10

  Oli_34160's review ( translated ) Improve this translation

  Characteristics

  For specifications and review the original preamp, see below. On mine, I made the change, Dr. Boost (chgt condos on the audio line - sixty, ceramic films cons - chgts 15v regulators, amplifiers chgts Ops - 10 in all, the OPA2132 and 4132 to replace TL72 and 74). I changed the lamps by EH and other minor changes to control the breath. At the exit, not really spectacular ... But over time, there is greater precision in arpeggios, sweeps in saturated crunch or even a little push. This is especially the crunch and clean as we gain a better definition. Breath less, sounds a bit more "hifi", more modern (OP amps and condos are certainly something). Warning! That remains the Marshall! In any case the sound is changed. But it becomes more versatile and flexible as thinner and better defined. Consequently, you discover other facets of his guitar playing that lead to other types of uses that most of Marshall. Modif - gear and MO included - must revolve around the 250 €. I made ​​myself a small fifty € uro by drawing samples from the component manufacturers (TI, National Semiconductors, etc.).. Warning! This type of change is still an adventure that n is not within reach of a beginner. It is better to master the solder and the practice of desoldering braid and desoldering pumps. So think carefully before you start it!

  Utilization

  Sounds

  I do rock, variety, jazz, blues, hard ... A little of everything .. what I use it with a Ampulator ADA (I have no amp) on a active speaker Thomann PA302. I think it sends just fine!

  Overall Opinion
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• 01/09/09

  Judas's review ( translated ) Improve this translation

  Characteristics

  Tube preamp (12AX7 two, one for the Clean (V1), one for the saturation (V2). Please note that the saturation of the preamp is a saturation diode, lights are just there to color the sound (but we feel is a difference between different brands of lamps). For my part I stuck him in a Electroharmonix V2, and Marshall lying in my stock for the clean.
  
  
  
  It is noon, 4 channels (2 clean, 2 OD), effects loop ...
  
  
  
  A comprehensive pre-amp.

  Utilization

  Not need a tray 5 for use. You choose your channel, the gain, the EQ is recorded and shoo!
  
  
  
  The same applies to the South, we choose the channel and it's good.
  
  
  
  Of gear designed for guitarists what! ^ ^

  Sounds

  Well, well, should be expected, it sounds Marshall! (Well, that's not a surprise).
  
  
  
  So we like or not like it! Personally, I found it amazing that little machine! The clean sound is round and warm, not slamming the Fender, but fulfills its role.
  
  
  
  The OD1 channel provides good friendly small OD for rhythm. AC / DC to the Foo Fighters
  
  
  
  The OD2 channel has an extra headroom and a slight compression, which provides some nice sounds leads.
  
  
  
  I used a Fender Lonestar US (Start HSS), and it was perfect for the great big rock US 80/90 's, with the Marshall and more biting.
  
  
  
  Be careful to choose the Poweramp with this preamp. It gives its maximum with a good tube Poweramp (VHT 2502). It is a little soft knee with a Classic 50/50. I have not tested one in PA transos.
  
  
  
  For those who want to sound Marshall JCM800 for their rack, go for it!

  Overall Opinion

  I have owned for 6 months, sold it to buy a Mesa Dual Caliber (which I think is playing in the same range of versatility, with the grain Mesa).
  
  
  
  I changed it only move to a system pedals + head (tired of lugging the rack 35kg), but I admit that I regret it. I buy some new one later.
  
  
  
  If you ever find the modified version (with change of the condos, and transistors with good tubes in it) go for it, it's really great stuff, and the amended version is more accurate and more musical.
  
  
  
  Try it!
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• 10/28/08

  jimiric90's review ( translated ) Improve this translation

  Characteristics

  Programmable preamp but everything is already explained in previous reviews!
  
  As a rule the 4 basic sounds are excellent, the texture of the guitars totally respected and the settings are identical to those of any Marshall head .. The effects loop is mixable in its direct (12 is in series ).
  
  The connection is sufficient that we can integrate easily into any system and outputs L / R emulating a Marshall stack are very realistic very useful!!

  Utilization

  Simple setup really made for musicians .. We can change any parameter in full concert!
  
  If you like the sound Marshall lamp, no problem getting a sound regardless of the channel .. Besides the presets have already been exploited or may be the basis ...
  
  The manual is in English, so ....

  Sounds

  I use it in conjunction with the multi-purpose JFX1 inserted into the effects loop with just my Start + + rotovibe wha-wha at the entrance to the preamp ... and the fact that especially for the type of things standart blues quite heavy!! Good for the big metal it looks possible!!
  
  I just changed the two lamps for a gain a little cleaner when I boost the input of JMP1 (integrated EMG afterburner in the stratum), but no other changes!
  
  I love all the sounds clearer than saturated with or without the addition of JFX1 ...

  Overall Opinion

  I bought it at its output (in 91!) And then sold with the rest of the rack (JMP1 jfx1 9200 + + + hf tuner rack tu50 Nady hush + stereo) to return to something + rock 'roll (jtm45. .. I came back to the configuration JMP1 + jfx1 and frankly, I do not regret it and measures the height bullshit 13 years ago !!!!!!( already explained in my opinion JFX1) .. .
  
  I bought everything in time so the price / quality ratio is excellent!! But be careful in this kind of buying the stuff is brand new pes or warranties and it is always possible to come across problems not mentioned by the seller !!!!!
  
  In fact the choice I had done long ago!!
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• 05/23/08

  khronegon's review ( translated ) Improve this translation

  Characteristics

  - Prampli lamps (2 lamps).
  
  
  
  - Connectivity well complte:
  
  * Front: between guitar and headphones;
  
  * The rear: output effects loop (parallle), back left and right effects loop, left and right main exit, exit right and left "HP simulation", Midi In, Midi Through, Midi out, 3 or 4 switch -20 db (loop, main exit and "simulation output HP").
  
  
  
  - The complete rglages are: volume, gain, bass, middle, treeble, prsence analyzed for the effects loop, "bass shift", the MIDI rglages, a knob and master gnral the power switch stopped.
  
  
  
  - 4 channels: clean and 2 OD 2.
  
  
  
  - No effect.
  
  
  
  - I AIM that the volume of a JMP is controllable via an expression pedals. Nothing really mchant, but am forced to go through my multi-effects to play with the volume ...

  Utilization

  - The JMP is a MODEL of a select intuitiva The argument is that you want to change, turn the knob data, there has been ...
  
  
  
  - It's very easy to get a good sound, custom settings are really their rle, none of the to look pretty.
  
  
  
  - The manual is very nice, he explains simply, but as I said dj, the JMP is a pilot very easy.
  
  
  
  - The configuration of the southern part is of the same caliber as the rest, trs intuitive and efficient.

  Sounds

  - It is any type of music as long as you love the sound Marshall JMP 1 is because of Marshall, that's it. It is ideal that I like to play.
  
  
  
  - For my config, see photo on my profile and Schematic.
  
  
  
  - Am may be an alien, but I like the clean sound of a JMP ;-)
  
  Otherwise it is the Marshall in the best sense, I will not explain what else do a lot better than me.
  
  
  
  - There are a few blows on the OD2 channel that is sometimes Gnant ... with a small noise gate, it quickly rgl ... Apparently, it's pretty normal and only appears on the ca OD 2 (nothing on the other channels), not enough to make me doubt my choice.

  Overall Opinion

  - Rvait I, I, am happy ...
  
  
  
  - I particulirement its ease of use, and sound gnral.
  
  
  
  - It's the only pramp I tried I did that-l ...
  
  
  
  - Purchased in OCCAZ Obviously 'in very good state.
  
  
  
  - I would do this choice without a doubt.
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