All user reviews for the Marshall JMP-1

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.

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 ...

This is a pre amp so candles, which has no internal effects. The connection is quite small, a mono input jack 6, 35, an effects loop, two stereo outputs, one untreated and the other with simulation of HP. 1 rack unit.

UTILIZATION

The settings are simple, you can easily do without the manual, an IQ of toad is enough to get out o)

SOUNDS

Transparent? A Marshall? Muhahahahahaha! Sorry ...

No, instead, asked Marshall to sound, tea, of course, o) and saturated crunchy sounds typical of the brand with clear clean sounds ever.

This preamp is very well what it is designed: the Marshall. Do not ask him anything ...

OVERALL OPINION

I have this pre amp for 1 year.

Honestly, I pulled this product when my SansAmp PSA1 passed away and I have not found another of OCCAZ.

The JMP1 gives me the big Marshall sound but I will never forget the versatility that I had with the SansAmp.

In conclusion, I am happy with this device but if I find another PSA1, it will have to share!

Tube amp (2 lamps 12 AX7 or equivalent ECC83 marshall if I remember correctly)
2 clean sounds
Two distorted sounds
A guitar input, an effects loop, 2Quit (stereo) single or two simulation outputs with HP marshall ...
Model 1 rack unit

UTILIZATION

Config simple very intuitive, you select a sound (or light saturated, you set the gain, the EQ with knobs, the overall volume, the effect of% we save the patch if you want to store by pressing the desired number cake ..
a little trouble with control pedals PM: No. 1 of the pedal called No. 0 preamp .... it's a detail that's true but when you tweak a sound (coupled with a generator effect) c is always annoying to call the program No. 135 of box 134 is effective and the marshall .... it crashes easily

SOUNDS

Good color is necessarily MARSHALL preamp ....
I like it .... on the other hand no large saturation
not very versatile
on 21/08/03; Well actually dragged long after the forum I decided to put the lamps 12ax7LP premium Sovtek and there I remained stuck in fishing, grain, so I increase sustain the base note to 9 / 10

OVERALL OPINION

I for 1 year, purchased about 300 euros new price 1000 euro
I like the sound of my saturated preamp ..... and sounds clear but not too
on the other hand I have to add a layer of saturation with my boss to get more sounds distos ...
I bought OCCAZ very good value for money .... I do not regret my choice
if one day I leave finally it seems that it is indestructible, I prefer a no amp .....
21/08/2003 with the new lights the sound is very distinctive but very hot, especially punchy!!
clean sounds are almost immediately crunch is bluffing. JMP1 Please buy the bones and put lamps 32 euros les2

Analog Preamp lamps noon 2x12ax7, all easily accessible parameters
no effect.
STREO effects loops, Stereo outputs, speaker emulator output, while the jack.

UTILIZATION

Easy to use, no need to book.
All parameters are accessible directly, there's the 5th page in the menu troisime!

SOUNDS

It sounds bein marshall, but to change the lamps.
I put Ei Elite, the distortion was a good fat, even prcise qd and big bass.
otherwise clean sounds are clean and crunch sounds with a microphone nickel serious blues

OVERALL OPINION

I have 8 years and it suits me well (I'm the big mtal).
is probably the best preamp qualitprix Student Reports in its range.
from large triax or VHT preamp as I see no usefulness to buy something else.

Prampli analogue twelve o'clock lamp (2x12ax7) + + Stereo effects loop output and Stereo master simultaneously HP Stereo (6.35 in). No effect.

UTILIZATION

User manual? no need! simplicity is the same: you choose your channel (OD1, OD2, clean1, clean2), you equalo the RULES, the% effect and you patch your backups ... easy!

SOUNDS

Good !!... : You can read everywhere that you can not have large saturation av the JMP-1 ... and yet I make no mtal bp (Rammstein, Meshuggah, Deftones, ...). Let's say it dpend of what is call'd saturated fat: if it is to have such big gain for the bee and death / thrash / etc, then yes, the JMP-1 can not do it.
But if for you, saturated fat means big sound full, prcis, with a surgical Submitted max frequency drives, then the JMP-1 will be perfect. We must not forget that too much gain kills the gain, so ...
I put 9 / 10 in prcisant need to change any of the same two original lamps for $ 32 and 2.

OVERALL OPINION

J'utilis before the saturation of my 5150 but it lacks too much precision I got. Now I plug the JMP-1 in the return of the effects loop of 5150 and ... has done.
I bought 6 months ago for 400 it gives a good value quality price trs.
If c'tait again, I'd do the same choice and I recommend it for those who want the kind seen all of his time in sound.

I will not dwell on the characteristics given that everybody has already described.

UTILIZATION

The use is intuitive. There's just plug and change settings as QLQ a head amp to approach what we want.
I find the level that happens to approach the Mode Four (which for me is the only powerful in its Marshall). Apart from that we get the Marshall sound without big surprise. (I'm a fan of Mesa).
I board no manual as I bought used, but this machine is so intuitive it's not like a TriAxis (full of subtleties him).

SOUNDS

I'm more metal-oriented (different kinds) but I also rock the blues and a little pop rock.Ce preamp is not the one I use most since I board of other stuff in stock. Now I think he can be versatile enough (even if I place it below the TriAx tjs).
I play guitar so I get proper sound easy, it helps.
The sound I like most is the dynamic type fatty Mode Four qd I play the rhythm.
on the other hand for solo I do not like the Marshall distortion (too bland for me).
I do not use it either in its clean (except exeptions) because I board anything for that.

OVERALL OPINION

I do not since ais super longtps not bad but I board her bosse's.
I like the fact that we get a big distortion (like Neo) but must be behind the rest of the stuff I guess that makes him no less.
What I like least is that this lack of precision in the reglages.Autant TriAxis head can be taken because of that (for some) as sometimes I find it lacks a little something to get a QLQ I want exactly.
I found a TriAxis before buying and it is therefore back up this dernier.Je say that it is a good compromise qd can not go on to get the big Mesa son.Ca is cheaper and easier to implement.
As I bought a friend ais I board had the time to decide to buy it. So I think I will take it (especially if I had not Mesa).

JMP1 my opinion:
I had and still have a lot of Marshall JCM800, JCM900 and utiliss 30th anniversary with one or two boxes Marshall1960 ct effects and a GForce.
For JMP1 I associate a Marshall EL34 100/100 and GFORCE and control everything by pdalier MIDI

UTILIZATION

Super easy, easy to get good sound, easy rgler, the manual is almost useless.
Unless you want to reset all the presets in the original configuration that I have done APRS have bought used.
L You can Tlcharger the manuel.Il is clear but in English

SOUNDS

As I've mostly covers of rock and blues more than I needed "rglages" To be able to adapt my sound to the current track (I use a basic standard Les Paul or a Start with noiseless pickups or hack e with Hotrail according to need).
So I opt for a Marshall and pRSET JMP1 since there were programmable, while saying that most basic sound would be similar what I knew.
JMP1 for me it's all good, it's super easy to program and the big one finds Marshall's, I would say even in the best way to narrow down since there based on need and scratches. B I love the voicing for the modern
Mistreaded Deep Purple with a stratum or TUSH ZZ TOP with a Les Paul, these are the sounds that ncessitent rglages radically DIFFERENT. Prprogramms with presets, one close enough to the original sound that has to do it and especially it is found just by pushing a button on the pdalier (what comfort)!
Marshall clean sound is great but will never gnial, I was covered well enough for me and my needs well! (Eg Sweet home Alabama or rhythmic style arpge Still Got The Blues Gary Moore, the fact 100%).
Ct Crunch, there are ways to get closer to LIVE sounds of Stevie Ray Vaughan, particulirement using the A and voicing .... good strat with ropes pulling big!
In résumé I'd say like all guitarists, there is always a time when I can not find the sound pil hair I want to hear with the amp (or scratches) on which I play, but 99% I take my foot with JMP1 and configuration I use.

OVERALL OPINION

I use it for 6 months
Strengths: sound quality of Marshall, convenience and great palettes rglages prprogrammes.
I use the same SETTING THE base with a little more volume and often a little more effect on a preset diffrent to spend his rhythm his "solo".
350 bought used for me is also a very good report quality price for the pro stuff.
Then, as I always conclude by saying that the sound is when the same scratch that does, but a good versatile gear has given comfort and broad the range of possibilities!
If you like the blues rock of Hendrix and Metallica, you can not go wrong with a JMP1 and EL34 100/100, is a sr!

It is comprehensive, but its design is Exceeds. yet it has all the options needed for a multi-use
in fact it is not an analog tube prampli
it's a preamp numeriquea ith lamps to warm up the signal, Designed to mimic the sound of all models of Marshall, then, well, given the time (1990) is not the mesa, engl, no etc. .... masi kan couldbe even make big sound

UTILIZATION

Ultra simple: simple can not believe I

just a default: in use with MIDI pedal, the hair is latende Ongue, c not huge, audible masi, the coup must anticipate the click at the bottom ... MIDI clock is a bit slow

SOUNDS

All blues rock, hard, rock n roll the big rock and cy is ...
c on c must not. compartment alone in a studio preamp mesa, the difference is already huge in quality nivo (the mesa is audessus, masi bcp less versatile, more typ)
forcemenet fo bring the price of aa OCCAZ
els for clear, trs Bonen things, nothing to do ith a fender or jc 120, masi c smeiileur the clear sound of marshall
the crunch I'm not convinced ... and I was the crunch (maiiiis Nonp chocolate, fol pff)
big sound for metal, it can be worth but never the stuff today it has Designed to st
interesting for the home studio, good emulation output, but a pod is more versatile, obviously ...

This said with the following config, peavey classic 50/50 + baffel marshall JCM800 Lead series, celestion g12-65, it scares a lot of people dej ...
it is also a good guitar, obviously

Remember, Marshall is the grain of the rock n roll .... You do not even know how many discs you have listened to this sound ... but it is not everything either

OVERALL OPINION

Rappotr qualitprix (used) for an unbeatable preamp ....
personal if I had the sub, I slammed a shit other stuff, ANALOG preamp has crazy prices ... c but not, and I think aps be the only one, and I find this versatile preamp bcp styles, even funk, variety, reggae, etc. .... and practical thanks to its 100 memories (allow the purchase of a MIDI pedalboard)

Prampli MIDI guitar.
2 lamps (12AX7 origin):
- A lamp for clean sounds
- A lamp for heavy distortion

Internal power supply -> directly in food 230Volt.
Insertion loop with mix level programmable.
HP Emulator
Headphone output.
Connection MIDI: IN, OUT and THROUGH

UTILIZATION

Most:
<ul>
- Unitbr 1 /> - You can choose the lamp that suits us best for clean sounds and sounds saturated! Cest plutt handy! (Useful: plain-> GrooveTubeECC83 / saturation-> TeslaJJ)
- Loop level of integration with programmable mix.
- MIDI mapping function, with the possibility to program the MIDI-OUT diffrent reu MIDI commands on the MIDI-IN </ul>
The -:
- Do not buy this prampli for the quality of the emulator
- A little heavy (5.9kg)

SOUNDS

Coupled amplifiers and speaker cabinets lamps of good bills, is your exact pluttsduisant.
For clean sounds, they are less good and TriAxis quavec a fortiori less than 3 + (I used one for 3 years before the 3 +), but still this really honnte range.
For my part, I retain the clarity of their saturation remaining place in a MIX or when playing in contrast to the group ... TriAxis that certainly is the best sound quality but has a difficult rsultat bring out, especially live without get stronger than everyone else ...

On aillieurs, the JMP-1 possde good blues crunch or lead.

Just over fields of action between the MIN and MAX for the settings have much t ...

OVERALL OPINION

I use it since 2000.

This is the only prampli I kept since I can pass in a configuration RACK (1999). So I had all the opportunity to compare other pramp / amp (Mesa / Boogie Studio preamp, Fender Twin, POD2.0, TriAxis CAA and 3 +).

The JMP-1 is a good prampli backup in case of failure of a system that main (because he does everything), while providing sound really trs INTERESTED in your config matre.

In short, a good prampli with a good value trs qualitprix doccasion (400euros. ..)

Does everything said.

UTILIZATION

Simpler you die! One branch, the RULES in 5 minutes and voila the sound, the manual downloaded from the net is pretty clear.

SOUNDS

Trs well for the grunge, punk, rock and hard rock in gnral, limit for the metal.
Used with a Fat Start, a Washburn WI64 and an Ibanez RG 270 with Di Marzio pickups,
the Satus are quite nice greasy without being extreme, the clean sound is not clear trs, get crystal clear sound is impossible ... ah I'm told it's a Marshall ... Okay, as much for me.

OVERALL OPINION

did a little over a year I use, I like the possibility of safeguarding its presets, the simulation of loudspeakers and sound saturates the clean sound is not great but I m ​​' doubted it before you buy.

I bought OCCAZ so qualitprix good value, the price seems to me by nine against EXAGRES.

For the price I referrer the same choice.

The JMP-1 preamp is a noon lamps (2Xecc83) equipped with four switchable channels (2 clean sounds and clean2 clean1-and-2-OD1 and OD2 distos-. It also has a 4-band EQ for each channel, a master volume, a knob gain and an output volume of knob.
Note qqu'il patch has 100 programmable memories and driven by noon.
At the rear, the connection is the most comprehensive: a stereo output, 1 output stereo emulated HP, all connections noon (in, out, through) and the outlet.
The JMP1 is on the comprehensive plan both in the connections that the number of channels and its possibilities through technology Midi.

UTILIZATION

I bought my JMP1 of OCCAZ 'and I did not have manual. Yet the sound is easily obtained! The only problem I encounter is the driving evening. I want to ride my ToneLab SE avce and I do not arive at the moment (on the other hand it's been a week since I That a time and tried to make contact .. .). Otherwise find its appropriate and save it is very easy for little fingers that is!

SOUNDS

I play modern rock, muscular but not metal and JMP1 gives me the right note ...
I was using before the ToneLab SE uniquemnt disots but did not suit me, it was too artificial and there I plug the JMP1, I press forward and OD2 guingamp!! The distortion is fat but precise, rich in harmonics ... I fall short ... As for the clear ons I can not find them bad from what I've read before. They are very transparent, it's true. It gives one the impression of a simulated acoustic and I found it interesting. The move from a creamy crunch (to SRV) to overdrive worthy of acdc!!
Going back to the disto fabulous (the real Marshall sound you hear on all skeuds but we never found ...), maybe my gear also helps a little. I plug in either my Gibson Les Paul Classic Premium Plus is my PRS CE 24 and JMP1 enters a Marshall 9200 power amp (with 12 lights) so I think it always plays for the harmonic s and sounds bold but well-defined .

OVERALL OPINION

I use it so soon for a week and I'm a fan of this preamp.
I love saa disto, versatility, ease of use and fucking her give me!
I had a lot of amp (fender, marshall transistor preamp ToneLab) and I never found or heard this sound coming from my 1960A!!
I bought it at auction for 200E and I made the best deal in the world ... "Yes, but it has mesa boogie nothing to do" ... To those who say that I say that a msa is 7-8 times more expensive than two, I played on the mesa (MARK4 correct and dual), it is clear that powerful heavy fat but the sound of rock music I like, especially if the grain I have found that with my JMP1. In fact many great guitarists have not cheated, I think that john5 studio uses only JMP1 and do not tell me that the distortion is low because it was still playing live "the beautiful people" with the JMP1. Metallica through Judas Priest or at home in France DHAM, the sound is killer marshall and JMP1.

Everything or almost everything has been said already. No need to add much, except that mine (bought secondhand to an AF user) has two jj tubes and came with the pedal that goes with the jmp1.

UTILIZATION

The configuration couldn't be easier. Personally, I connect it to the return of my fallen angel head.
"Is it easy to get the right sound?": oh yes!!! Especially since everything is configurable on the jmp1: clean sound, distortion sound, bass, mid, treble, presence, effects loop level, gain, volume.
Regarding the patches available, 26 are already preset by the manufacturer but they can be modified at will. All others are entirely free for you to create your own sound.
The manual is simple enough to be easily understood by anyone. A table details the 26 preset patches (volume level, gain level, bass level...).

SOUNDS

Connected to the loop of my fallen angel, I have tested the jmp1 with my 3 guitars: an American strat, a gibson les paul smartwood and a ltd viper tuned one semitone down.
I "reproach" my fallen angel for having a too sharp, too solid, too modern sound. I want heavier sounds, so that's why I chose the marshall over the engl 530 or the voodoo valve. And I was not disappointed, on the contrary. For people who love rock, in every sens of the word (poop rock, hard rock, heavy metal), this preamp is for you. The sound palette is such that it's impossible not to find the sound, or sounds, you are looking for. I haven't had it that long to be able to really exploit all the resources of this beast.
For those who think you can't get a big and fat sound with the jmp1, I can guarantee you that you are wrong: with an EQ (mxr 108) in the loop, even an overdrive to boost everything (mxr wylde or ibanez tube screamer), and the possibility to adjust all parameters, we can go from a superb crunch to a very nasty and fat sound (maybe the jj tubes have something to do with that? I haven't tested it with the original tubes, so I can't confirm that).
It's true that the jmp1 isn't the best for clean sounds, but it wasn't made for that. Nevertheless, with a bit of reverb and a compressor we can get very nice results.
Finally, something that came as a really nice surprise to me is that it is possible to get fat distortions at low volumes with this preamp. I suddenly have no use for my vhm power break anymore, which was indispensable before (I've put it up for sale).

OVERALL OPINION

My opinion might be very subjective, given my little experience with amplifiers, but the jmp1 truly corresponds to the sound I was looking for and that I like so much. You may criticize the marshall sound, but nevertheless it has something and it's part of rock history. The jmp1 has reconciled me with marshall because I was very disappointed after trying out a tsl 60 combo which paled against the fallen angel.
I highly recommend this preamp given its great value for money, especially secondhand, if it's in good condition, like mine (thank you aliascross!!!).
What I like best is the diversity of sounds and their configurability (is that even a word?)
What I like least: maybe the fact that you only have four sounds available with the footswitch (but then again, a midi pedal will help you easily get round that problem).

Edit from 01.06.07: after several days I changed my jmp1 for another preamp (an engl tube toner). But it wasn't because I was disappointed by the jmp1, but rather that I had no use for one of the preamp's main advantages: the configuration possibilities it offers. The jmp1 requires a lot of time to fine tune the sound, which is something I don't have. That's why I took the opportunity to change it for a tube toner that has more basic settings and is easier to configure. I still think that the jmp1 is a very good product, and who knows I might end up coming back to it someday...?

Guitar preamp lights (but there must be a diode clipping somewhere)
4 MIDI channels
19 "1U
2 ECC83 for the clean and OD channel
Assignable effects loop on each preset

To see the rest of the Marshall site ...

8 / 10 there could be the same as the Schma SERIES 9000 (3 lights) to do well and mature APRS rflexion a guitar between the rear of the s'avre indispensable instrument (too galre cables in a rack when you have a unit for the effects pregain).

UTILIZATION

The use is very simple you press the buttons, turn the data wheel and we do store 2X!
The EQ is effective trs which allows the hair well rgler presets.
The sound is not immediately the need to rglages 50000 ...
The manual is short but it is not useful, but the factory presets contain really cool stuff.
MIDI makes it versatile and flexible trs.
The stereo effects loop is assignable to each preset and assayable thanks to the Effect knob is simply a dry / wet (0 is no effect, 6 were 50/50 and 12 was 100% the effects )

SOUNDS

I use it in a Hard US / Rock FM and it's perfect!
It has the sound Marshall (personal I mount with a 12AX7 in the VHT clean and EH 12AX7 DO) and it is rock trs.
Clean 1: fairly warm with lots of low mids
Clean2: more bright and prcis, EQ more hollow (nickel to attack modulation effects, for example)
OD1: too much gain (rock / hard) with a lot of mdiums and body
OD2: more gain and also prcis
Trs is versatile while keeping his personality the Clean 1 and 2 are nickel (even if it is far from a Twin or Rivera!) And Satus are in line with the brand (JCM800 / 900 or Plexi hotrodded ...). In addition it perfectly boosts cash or OD upstream.
The sound is still quite rock and not dborde no gain, has not the precision of a VHT or ENGL, Marshall is a what, I love to love me!
With good lighting Higain (Ei, Tung-Sol, Golden Dragon ...) you can even explore the terrain of the big mtalleux (Deftones, Fear Factory ...)!
To quibble I would say that crunches are not up to the mark (JTM, Plexi, JCM800 ...)

8 / 10 because it sounds very serious except for a little crunch and steep that, despite its versatility in terms of use when you stay in the same typs sounds very own brand English and who are all somewhat resembling (which for me is far from being a default, but to love).

OVERALL OPINION

I've had 2 / 3 years and only a Soldano SP77 could make me feel like her!
On OCCAZ 'it puts the 300 to pick up many of its competitors and sometimes even the most expensive (given that it is more reliable hyper)!
I hsiter remake that choice without a single second!
If you like the sound Marshall pramp this is for you ..

I put 9 / 10 because perfection is not of this world and that has shit to have no input jack the rear!

Everything has been said already
Just one defect: no input on the front panel.
a pity


UTILIZATION

Very, very easy to use.
Basic controls: bass, mid, treble, presence, and a bass boost that has a stronger effect on the fullness of the sound rather than the lows, which I love...
Midi is very, very easy as well, once you find the right channel lol

SOUNDS

Well, I think people who say this amp is not for metal are wrong.
There you go, I've said it lol
I have long sought for the perfect distortion preamp... and I've had some, a rocktron and another one, I even have a jackson preamp (not lee jackson but the brand, jackson, like the guitars) but it still lacks that special something.
You just have to look at the biggest bands and they all use or have used it: iron maiden, megadeth, metallica... but the most important thing is to find your own sound and I love the heavy metal sound from 1980, '85 and the early '90s. It's the perfect preamp.
Clean 1 is the one I use, I have my own settings but it is very soft with a slight brilliance to it, but I think you can also achieve a very crystalline sound
Clean 2 is more hollow, but the highs are too much, I personally don't use it
od 1 I don't use either but it's a good crunch even if it lacks some power
od 2 is perfect. I crank the gain all the way up and play with the guitar's volume for different styles. It's great and I can even manage to get a clean steve vai sound, it's awesome. With the mids all the way up I get a very tight sound that I love, and boy does it rock!

OVERALL OPINION

I've used it for a while and I can only say: thank you marshall. You can find it secondhand at very reasonable prices. On the other hand, new it's really expensive, but still less than a TriAxis...
It's a petty good preamp, plus it's really sturdy (I know because the screws on my rack are too short and it's fallen twice already). And it works perfectly fine
Seriously, if you love blues, rock, hard rock, heavy metal, and good ol' trash with a marshall sound it is perfect, for black and other genres with a change of tubes or a distortion before it, it should be good.
Enjoy everybody!!