Sorry Marshall…You Took Too Long! (The JMP -1)

[@RobertBakerGuitar]

HAPPY NEW YEAR EVERYONE!

[@christophervincent8420]

Happy New Year bro

[@Juanchostar1]

Feliz año amigo!!!!

[@arthurgonzales4949]

Happy new year to you Robert! I hope you and the family have an awesome 2024!

[@OleZ-BGuitar]

Happy new years, my guy!

[@JoeR203]

How about the ADA MP1?

[@AngusClarkGTR]

JMP-1 was the heart of my rig when I toured with Kitaro from ‘94-‘98. Never let me down, and the live album from ‘95 was nominated for a Grammy. So Marshall wasn’t too late for me. Nice vid.

[@xaviergough9359]

Killer metal pre.

[@PurposefulPorpoise]

Post some settings? Or u gonna keep ur secrets?

[@spncryang]

Damn the Angus Clark. Much love man and definitely gonna check it out. Love Kitaro and didn't know you play with him.

[@AngusClarkGTR]

@@PurposefulPorpoise I sold that thing so long ago, I can’t remember the settings!

[@ZiddersRooFurry]

What a great fucking band. Thanks for all the epic tunes, Angus!

[@mudwiser1391]

I bought three of these units 10 years back at an estate sale, clearly no one knew what they were... bought them ridiculously cheap. The one is hatched, one works perfectly and one is like new new. That same day I bought it I also bought 10 sets of pickups new in the box. Duncans, DiMarzio's, Fenders, EGM's... I walked out of the auction with my new acquisitions for under $350. One of the greatest days of my life.

[@williamphillips24]

Believe it or not, I picked up an ADA MP1 at a garage sale for $20 a year or two ago.... a battery swap and step down transformer later, and it was working fine.

[@johnroberts838]

That’s insane, 👍👍👍 Melbourne, Australia.

[@UncleYoshi]

Feels like a great day just reading your comment about scoring great gear for $350!

[@tgnz24]

Now that’s a win!

[@anthonyhoffman6052]

EGM's ooooh!

[@dudeinc.1563]

Hi I bought a JMP-1 when they were first released and one big advantage at the time was the instant switching between patches. The multi effect racks at the time were 8 bit or 16 bit and took up to half a second to change patches. So you could put the 8 bit rack through the send and return on the JMP-1 and it helped hide the gap until the chorus, reverb and delay effects dropped in. Those were the days......

[@tommanseau6277]

What did come out 5 years earlier was the ADA MP-1 preamp. It would be interesting to hear these 2 back to back. BTW, nice outro.

[@Klaus80804]

Yeah - I was thinking the same thing. The ADA really was THE unit during the Hair Metal Days. But I remember when I got the JMP-1 I was so exited, as it really nailed all the Marshall tones so well. So the ADA was out of my rack and the JMP-1 replaced it. Some years later we all went back to play amps and stomp box pedals.

[@KyleCarrington]

I like this alot more but the ADA was more for thrash/chunk.

[@BrunodeSouzaLino]

And the Sansamp PSA-1

[@JPSixgunner]

​@@Klaus80804Well at least the ADA was actually a tube preamp, lol

[@victorvaldenegro4001]

I bought one when they first came out. Gigged with it for over 20 years in a Rush tribute. It was fantastic! Wish I still had it.

[@christophermarchand320]

Maaaaaaan, when you were calculating it's age and had to add 10 years to your initial number which caused a moment of "fuck! I'm old" look in your face hit me right in the feels. I do that all to often and have that same "I forgot how old I am now."

[@neilkendall5499]

Totally. It's hard to believe 1992 was 32 years ago now.

[@shawnbayless777]

The JMP-1 is a great unit, I own two of them and I still have every piece of rack gear I have ever owned and I hold onto every tube amp I have bought over the last 36 years. Fads come and go and they recycle just like modelers will and everyone will be jumping back into amps and rack gear.

[@rca3rd]

I have been saying the same thing!

[@macgrory]

I have two as well, wouldn't part with them. 4 preset footswitch, set for crunch/dirty/filthy/wooaaarghhh!!! And a Marshall 9005 50/50 to power it as well!

[@UncleYoshi]

I have one JMP-1 & a Mesa Stereo 50/50. Thought about selling it for new gear, but probably better to keep it. Great stuff 👍🏻

[@pauln6803]

​@@macgrory The JMP1 was alright, the 9005 and 9100 dual mono power amplifiers were great.

[@ELEVATETHESKY]

Right? I have put the JMP-1 up against almost every modeler, pedal, preamp, etc... and The JMP-1 is more full, has depth, has clarity, stays tight, and has a very rich, warm, and easy to listen to sound that doesn't hurt my ears. But if you want it to, you can make it shrill and trebley as well lol.

[@sebrura]

Dude, that intro gave be a serious flashback. I had a friend, he was 14-15 in 92, who was mindblowingly good at guitar. He and his band played Pull Me Under 100 percent perfectly. All solos 100 percent. This was before youtube and internet, you had to learn things by ear. Their performance was my intro to DT. Anyways, he had a fantastic ESP guitar and a small rack with the JMP-1 amongst other stuff. I will never forget that time, best of my life.

[@ryanfraley7113]

I wish Marshall would start making this again, as a preamp this is pretty damn solid.

[@BrandonEht]

Marshall could really be relevant again if they started making a modeling amp to compete with the Katana, that doesn’t suck. The Code range is horrible. They also need to make desktop amps to compete with Yamaha and Positive Grid. They have the form factor already with their Bluetooth speakers

[@christopheranderson2158]

Not a power amp.....it’s a tube preamp.

[@killedbycoconuts]

Expect Bluetooth speakers and headphones from Marshall. I would love to see a Marshall style Kemper.

[@ryanfraley7113]

@@killedbycoconuts Sadly that seems to be what they really care about, it’s the same thing that hurt Gibson under Henry J.

[@aquilarossa5191]

@@christopheranderson2158 I thought he probably miswrote, but I do see a lot of comments where people struggle to understand the difference between the two things. I dunno why. Maybe because they watch videos instead of reading 1980s Guitar Player magazines 🤣

[@shredemigod]

I still have mine! The speaker emulation is indeed great. OD1 with a drive in the front yielded my favorite result.

[@ELEVATETHESKY]

I love the Marshall JMP-1 so much I have tried to replace it and nothing can beat it imho. It just has this nice furry/fuzzy metallic/percussive quality to it that nothing else seems to have. Only thing I have not tried yet is the Axe FX. I have heard the JMP-1 presets on the Axe FX on KZbin but I am still not sold. It just doesn't seem to have the full body and warmth as the real thing. To be fair I run it with the HX Effects and use the EQ and it brought the JMP-1 to life just using the on board Cab Sim. Great video and great sound you are getting out of it. It would be rad if you did a video with your Axe FX and showcase the JMP-1 on it and have it go up against the real Marshall JMP-1.

[@Mikey__R]

1992 was a hell of a year for music.

[@4GuitarTrance]

Yes, literally... hell!

[@georgecharleston2597]

The 90s was the worst thing to happen to music and it all went downhill from there

[@sathira_anuk5179]

​@@georgecharleston2597nah that's 80s

[@gsxerwhite]

I saw Metallica on their black tour that year.

[@killedbycoconuts]

​@@georgecharleston2597 90s killed rock n roll. I just wasn't angry enough for grunge.

[@GUNFREAK2000]

Graduated in 90’ hair down to my waist!! Beautiful time to be in the teen years loving music!! Love guitar!! I had an Alverez Dana scoop… one of the strangest axes I owned!! Luvin your lessons Robert!!

[@RothBeyondTheGrave]

I was just looking at these on Marketplace and wondering if it was as cool as I thought. You just solidified it for me! Might have to go snag it. Also just picked up a Lead 100 Mosfet which I'm in love with. My philosophy with Marshalls is the same as with cars (and most things, honestly). Old is GOLD.

[@arthurgonzales4949]

Ok I have seen these units when I would go hit the pawn shops for guitars. They'd sell for a couple hundred bucks or less. I never knew they sounded THIS good! I'm pretty impressed!

[@johngregory7329]

Hi Robert, There is an old saying. What's Old is new again. I still have and use my rack system today. New technology is still great also. It's up to the musician what he or she prefers. Happy New Year to you & your family. Keep Rocking.

[@brucerichard2904]

With the reverb on,that sounded like THE quintessential! 80's sound.

[@steveg219]

That’s a better Marshall amp sound then a lot of Marshall amps!

[@Fl4ppers]

Its the shitty speaker they often put in cabs and combis now that ruin it 90% of the time. They knew how to make great stuff back in the day, all those old boys got retired out by the late 90s, early 2000s. Same is happening to Gibson and a few other companies right now.

[@jamesalfano5740]

Even the DSL series are no longer made in Bletchley England, they are made in Vietnam.

[@ELEVATETHESKY]

That is how I feel. Some people just do not like the Marshall JMP-1 sound but I love it because I feel like it has character. It can get creamy, have tons of high end or be warm, metallic, heavy, spongey, chewy, furry, percussive, and I can add a ton of body and low end and it is still tight! It chugs so good but yet the chords are so nice and full and rich.

[@marksloan9058]

Very cool unit. I was a Mesa Boogie Triaxis and ADA MP-1 guy already so I didn’t add this. But always wanted to. Also to add to your famous user list Def Leppard used these things for 20 years or so.

[@anthonyhoffman6052]

MP-1 is as lame as JMP-1. Triaxis slays them both.

[@Fl4ppers]

I remember those. Thought Marshall were remaking them when I saw the thumbnail. This helped Marshall with the Valvestate iirc.

[@colossus316]

When I saw the thumbnail I thought so too ! The JMP-1 and any of the Marshall Dual Mono Block power amps ruled the backline in the late 90's - early 2000's .

[@FuzzWoof]

Toured with a JMP-1 as the heart of my rack rig back in the day going into a Marshall 50/50 power amp with a Quadraverb in the loop into one or two 4x12s, absolutely loved it. The old school analogue emulated outs were actually half decent, which is more than you could say about most gear at the time, I'd use the direct outs quite often when doing sessions. That single knob interface was the stuff of madness though, haha.

[@virtuososo]

It does sound solid. But that dirt is not all from the tubes. It has a diode distortion circuit in there, too. I'm not sure if it's only engaged on OD2 or whatever. IIRC, it's a blues breaker style configuration.

[@josejuarez4477]

I bought mine 15 years ago, and was able to make a record with it. The emulated output saved me from miking cabintets and stuff, and sounded great direct into the board. My only grievance, as it was said, is the encoder knob, because sometimes it skips steps (let's say you want to adjust from 1 to 3 and it goes 4). Also, I would have liked more resolution to low-mid-hig-contour controls, not just going from -6 to +6. But I understad what Marshall was trying to do there. Noticeable changes. Nice video, many people have looked down on the JMP-1 and seems to me unfair as it is pretty good unit.

[@version7144]

I seem to remember these being around earlier than 1992, I could be mistaken however, it seemed like everyone had a JMP-1 and an Alesis Quadraverb in a rack by 89/90/91.

[@Gearhart_Music]

I think ADA MP-1 predated that thing by a few years. Made Marshall go "oh Sh!t!!" And come up with one of their own. They're still very popular though. I know a guy that runs one straight into a 2203 head. (Weird I know but it works)

[@Nghilifa]

Dave Murray did just that (but it was a JCM2000 DSL 100 instead) a few years ago. I think Janick (one of the other axemen in Iron Maiden) still use a JMP-1 for his main sound live.

[@JLE999]

Wasn't too late at all. The JMP-1 was used to great effect by bands like Smashing Pumpkins, Deftones, NIN, Filter, Failure, A Perfect Circle, Ministry, Judas Priest, Def Leppard among others.

[@thesurfjunkies]

JMP-1 into an Intellifex and a Mesa Boogie Simulclass 2-90 and you literally had THE Stone Temple pilots sound of the early 90’s. Ah…good memories…now playing straight through a Deluxe Reverb these days though.

[@flapjack413]

My guitar player in my hardcore/metal band in the late 90's - early 2000's had that preamp, and the same power amp as the photo of Mustaine's rig you showed, running into a couple of 1960 4x12 straight cabs. It was actually a pretty great sounding rig.

[@paulraider2001]

Can I just say: Good Job on keeping those fret boards clean and oiled? They look so nice on camera.

[@ChrisM541]

Interesting fact - another legendary midi preamp, the Mesa Boogie Triaxis, released only a year earlier. I had the Triaxis/2:90/G-Force FX setup, for a wide range of damn fine tones. Unfortunately I don't have that now though still have a JMP1 today. Plus some other GAS acquisitions, of course. These midi preamp systems were/are very versatile.

[@RennerGutierre]

I bought mine in the 90's, and I still have it w/ box, manual, etc and love it. Superfun to play! With my Ground Control Pro and GCX I can easily add pedals and racks to the chain. I use it all the time. Never failed!

[@simonmurray8220]

Used one for years upgraded to rocktron voodu valve another forgotten tube pre / fx 1u unit. Still got with peavey 50/50 el84 tube amp. Still sounds as good as anything around currently. Cleans on JMP not bright enough but dirts great

[@victormarinelli5660]

Have a virtually new one in a rack case along with a dual mono block amp. And two 1960 B 4x12 cabinets. All in perfect condition.

[@michaelgregory2231]

Had one in my Bob Bradshaw 8-loop rack system through a Mesa simul 295 power amp and it was great.

[@chrispetersen3151]

I used to run a Rivera MS120 stereo 3 channel tube amp with 2 separated 4-12 cabs in stereo. It is an amp that also has chorus and reverb. I loved the tone straight in the front, but I hated the way the chorus and reverb would fuck up your tone. So I got a JMP-1, and ran all my time related effects thru the loop, which enabled me to eliminate the distortion pedals and just get the tone straight from the head. The JMP was not part of the amps tone, it just enhanced it. What a killer rig.

[@jameswhitehouse65]

The Jmp-1 is amazing I have 2 of them I bought it the week it came out , nothing sounds as good to me , it’s basically what synergy amps are doing now , so I don’t see why Marshall can’t do something similar again

[@wizrom3046]

Great tones! Sounding very nice in the glass. (ie real tubes)

[@alexanderkirchnerat]

I still own one and it sounds great, straigt to the Marshall 9200 2x100w Dual MonoBloc, 2x 4x12. And a Rocktron Replifex. This stuff is intended for rough demolition work.

[@rutger4131]

Great sounding preamp, very suitable for Iron Maiden tones for instance. What sucks is that the battery for the memory needs to be soldered in, instead of it having a socket.

[@grahamnunn8998]

I had one I used with a Quadreverb and a Valvestate 80-80 into a 4x12. Great rig but a realised I needed a core sounds and some variations so created presets for my Les Paul and the same for my Strat Plus so they were level matched. The JMP-1 was great but they did a transistor preamp before (the 9000) that had a superb amp similar on the headphone out. Before the Jmp-1 I had that with a Boss CE-3 I had rackmounted and a Hafler preamp for lead. Oh, and a custom switching system with FET switching I knocked together with Maplin parts. Fast forward a few years and I was using a Peavey Classic and a few pedals. For a few years though, some of us lived the rack dream 😂

[@averylangs]

Wild that this video dropped just a few months after I finally caved and got one of these. They sound fantastic with a poweramp through a 4x12, really captures that mid 90s sludgy Mellon Collie tone

[@ruanddu]

Did Pumpkins use one of these?

[@averylangs]

@@ruanddu Yep! This preamp was their main sound for their live shows from 1993-1997, and it was used for a lot of the distorted tones on MCIS.

[@ruanddu]

@@averylangsoh cool, thanks! They had great tone all those years!

[@checkitout611]

Love my JMP-1. I run mine through an OX Stomp for live play or into my Wall of Sound in my DAW .... just sounds great. Always fun to play.

[@TheHairyDude]

I've been gigging with one of these units for the last 8-9 years, paired with a TC Electronic G Major 2. Love it.

[@scandinaviandetailing]

Glorified stompbox as the pros called it 😂 (had several of them, love them!) But as I understood the tubes isn't used as a "normal" preamp. The distortion is more digital. Not sure if that's true but...

[@roscius6204]

Not digital, clipping diodes much the same as an OD pedal. My preference is to use Boosts, Compressors and OD pedals into the clean 1 channel Then you can have the same tone and use the 4 x switch to vary the effects loop.

[@marchermans2318]

Hi, At home I don't have the option to record with a cabinet, if I use the speaker emulation output of the JMP straight to the input of the audio interface, should I use a DI box? grts Marc

[@ELEVATETHESKY]

Hmm, you could try that (I haven't yet), but the On board Speaker Sim is really great if you add an extra EQ. I use an HX Effects with my JMP-1 and it brought the JMP-1 Speaker Sim to life. I add some lows (60hz and 125hz), low mids (250hz), a little midi (500hz) and some Highs (8khz) and bam! Sounds like an amp imho.

[@jimilee459]

Nice. I have the one my brother had before he passed. I remember when he bought it, he used my credit card and paid me monthly. What a great memory, thank you.

[@jacksonmarshallkramer5087]

The reverb did make that sound killer.

[@Stefan-]

I actually have a JMP-1 that i bought many years ago but i have almost never used it, i was very impressed with the speaker emulated sound here, it sounds fantastic and better than many digital speaker emulations that i have heard and used so im quite surpriced actually, im not sure that i have even tested the built in analog speaker emulation myself. I do also have the Marshall SE100 rack speaker emulation unit but the few times i have used it it has mostly been as a loadbox which is also a principal function of it.

[@simonbaxter8001]

The JMP-1 is still part of my rig with an 8008 rack power amp and a stereo JCM800 1960A Cab ... and a Helix Floor for good measure!

[@stevesalazar9658]

These were great units. I always preferred the Groove Tubes Trio for that classic Marshall sound over these units though. Not to mention the Trio had a great clean channel as well. I repurchased the Trio later on with the added midi card installed that I found used. My original one didn't have the midi installed.

[@richardrondeau5625]

Been using one since 2002. In addition to the versatility of the unit alone, pair it with different power amps and get even more sound variety. Would not part with it. The speaker emulator records great. I currently pair it with a randall rd 45... It sounds killer!

[@Mikey__R]

This is what the Valvestate hybrids could have sounded like - Marshall had the tech. But they chose to make their cheaper hybrid range sound worse on purpose. Im pretty certain their cheap hybrids are why so many players hate hybrid amps, but the JMP-1 proves that Marshall CAN do hybrid well.

[@jasondorsey7110]

The 3203 artist proves that marshall could do hybrids, well before valvestates or the jmp-1

[@Mikey__R]

@@jasondorsey7110 was the 3202 the backwards hybrid? Solid state preamp driving a valve power stage? That sounds like a very different kind of beast. I had a Drivemaster in the 90s, and used it on bass on at least one studio recording. I'm tempted to get another one to drive my valve Ashdown, which could be very similar since it's a transistor pre driving a valve power amp. It might also sound good on guitar. I wonder if it'll live up to the nostalgia.

[@jasondorsey7110]

@@Mikey__R yea, like a musicman or an old peavey deuce, the models were the 3203 head or 4203 combo

[@tfriesen3866]

Reminds me of the Digitech RP3. Cabinet and hall emulation, tuner, looper, volume/wah pedal, and all of the obvious effects from back in the late ‘80s-early ‘90s.

[@OutontheRanchwithDrLee-xb4lo]

Wow... What a cool pre-amp! I remember those well, but sadly at that time was still a Super Reverb/T.Screamer guy.... Once again, I missed the bus! Fun Vid, Robert! Happy New Year, brother! A+++++

[@gto1607]

Yes Robert. I wanted one but passed. There is also a very nice matching stereo 6l6 power amp to go along with it. I can see collectors wanting these someday.

[@MichaelDerivan]

I had the Mesa Boogie 50/50 power amp in my rack when I owned one of these. Miss that rig bad

[@JVMultiProds]

I've never had the chance to try one of these out, but I do have access to a simulation of it on the Amplitube plugin. It makes for a very nice lead tone with a mild overdrive in front and some delay 😃

[@runabout76]

I've had one of these for a dozen years now. The speaker emulation is good, the FX loop is really usable and the MIDI functions even without a MIDI controller. I can pull patches from my Boss GX700 along with it. Amazing 80s/90s rock tones. These were advertised as "Every Marshall made in 1 box", IMO, it delivers.

[@shorerocks]

I got mine in the 2000s, when I was raving about the JMP-1 and how I wanted one, and he just looked me in the eye and said "I got one, great unit. I do not play it. I sell it to you". And it was a friends price (more so today looking back). If you are into higain, just boost it up front, and you are in heaven. A different taste than the ENGL Invader or the Bogner Uberschall. I actively play it and record with it to this day.

[@christopheranderson2158]

I’ve been playing through mine constantly lately! I recently got an old Hafler T3 and have been comparing them and the JMp1 is just a BEAST!! The T3 is killer, too!! 🤘🤘

[@JPSixgunner]

IMO the ADA MP-1 is a better choice, particularly if upgraded a bit. The ADA uses tubes running at full voltage in the audio path...

[@lovingpeace9715]

Still have my Marshall MP-1 and my rackmount Rockman Preamp/Chorus/Delay. Wish I has a ADA MP-1 preamp

[@jonmoser484]

Man, I owned one for a few days when I was too young/stupid to appreciate it. Still regret not keeping it. And now I keep eyeballing them on reverb. Thanks for confirming my fond memories.

[@christophersims1510]

Thank you Sir... Cool video.... They are great units... I have one with the Voodooo Platinum mod in my A rig... I used it live when I was in an 80s era tribute band just a few years back... Extremely versatile... I used it in a dance band as well... Crystal clear to Heavy Metal... Great lead sound... Sounds great going into a tube power amp... I'd be using it now if my current gig didn't allow me run a Helix direct... Just for the ease of loading and tear down... What can I say...? I got old...lol... But if I had a crew... I wouldn't hesitate to use it again...

[@jezzer1969]

But it’s a JFET preamp. The tubes are running the eq section. Not the tone stack. I had one. It sounded great. But I bought it used as part of a complete rack system. The rest of the rig wasn’t as nice.

[@gral9440]

I picked one up 1 month ago in mint condition for 340€, I run a G major 2 in the effect loop I picked up just after for 280€. I use it on my KSR PA50 (6L6) and that’s it... the sound... i just have to figured out how to set up the midi change on both units. Never done it before

[@jurosdiction]

It was a great unit. I used with Boogie 50/50 power amp and quadraverb for fx. Also used for some recordings with the direct out.

[@RomeoG39]

I had 50/50 as my power section, too. Man it had some great punch! 6L6's for the win!

[@maik9938]

Sounds amazing!! Can you run the Jmp-1 in to Torpedo Captor X directly to use the Torpedo cabs? Or you need a power and to do that? Thanks

[@michelvondenhoff9673]

That 19" rack mount stuff is pretty nice! Got a DBX comp/lim/gate like that. Once you figure it, it works like a breeze 😮

[@928Porscheman]

I owned the perfect combo of the JMP1 with the awesome 9200 power amp with two JCM900 cabinets. I wish that I kept it but sadly I needed to pay my mortgage. I hope I can find another one day for a reasonable price.

[@ruanddu]

Bet that sounded unreal!

[@ShinyShinyBlack]

Man this takes me back - I remember hanging out with two of my Christian Metal guitar heroes in (1993-ish?), Tony Palacios and Tim Bushong at a local music festival - one of them had borrowed this unit and they were sitting there scrolling through the settings, and trading back and forth between Tony’s Yamaha Pacifica and Tim’s B.C. Rich strat-style guitar. Everything they were saying was going over my head, but it was obvious that they were impressed…

[@Ottophil]

Steph carpenter used this for the deftones! I have a Friedman IRX doing something like this did but with modern power options

[@Kyle7K]

Myself, having totally ignored the Nivana's of the world, am astonished to learn there was a time where rack equipment wasn't cool. 😱

[@DeadWhiteButterflies]

Genuinely really good for a small studio setup. Would be quite happy having it sat next to my mix desk.

[@mattcrumbley6923]

Would you say this is better or worse than the ADA MP-1? The di out with the cab sim seems like a solid point in the JMP’s favor

[@RobertBakerGuitar]

Hmmm they both sound pretty different but I'd say I prefer the JMP over the ADA. THe ADA totally has a sound though.

[@mattcrumbley6923]

@@MrAngryTwinkie I’ve had the ADA for years. Never heard the JMP sound as good as it did in this video!

[@Mikey__R]

@@mattcrumbley6923 Robert certainly knows how to make his gear sing.

[@stevegardiner8473]

I used one off and on as part of my live rig for well over twenty years. Still use one virtually, as profiles in my Kemper. The JMP-1 paired with a ROLAND GP-100, which covered all the effects I'd ever need, was a pretty awesome rig. Also used one in the effects loop of a DigiTech GSP1101. That was another really great sounding rig.

[@aquilarossa5191]

Do you have a Freyette Power Station? It's got a cool trick that's great for preamps. You can use the PS's reactive load to load down its own power amp. My one at least, which is the smaller PS-2A. Why do that? To add tube power amp sound to a preamp before you send it to IRs. I sold my JMP-1 and matching power amp back in the 1990s because I was stupid. I have a Friedman IR-X now and using the PS-2A with it that way into DAW was the plan. Lotsa cables to mess with, so I have not got around to it yet. My pedal board looks like a bird's nest of cable too. I kind of wish I had bought a reconditioned JMP-1 instead of the IR-X, but I think that might be the nostalgia effect affecting my judgement (the IR-X sounds great though). I thought mine had reverb, but I must be misremembering. P.S. Marshall also released a matching JFX midi rack effects to go with this and the really sexy looking dual mono block power amp. I did not have a JFX, but it's supposed to sound pretty good for its day. I was kicking myself when I found out about that FX unit, because I traded the JMP-1 for a rack unit with lots of effects in it. Yep. Digitech (2112 tube preamp and effects -- pretty good really but no JMP-1).

[@thomastucker5686]

Nothing has changed. People think they need more gear, though what they need to to learn how to use what they have. Some just spend so much time about gear, they do not create music. I am watching this video out of curiosity, I don't need more gear. I want more gear, but who doesn't. I already have more gear than I can use. Anyone else have that problem?

[@JackPeloquin]

Yes!!! People believe, “if I get this piece of gear, I’ll sound like this___” Then I find it even more odd… these same ones will have 21 questions with said gear?!! As if they haven’t studied what they were hunting after?! And it drives prices up!!! I can get easily sound like X with whatever gear I have. Ableton and Guitar Rig will do, so will an older Pod!!! Just don’t buy behringer. They’re shit is unoriginal.

[@mikeivey8471]

It is definitely time to bring this unit back in an updated form !! It truly sounds amazing !!!

[@greghitt1704]

Got me one of these bad boys last month. I grew up on Guitar Techniques mag from UK in the 90's and all the guys were using this...Phil Hilborne & co...good times had by all...

[@guyfawkes8873]

I really like the UI tho o.O id prefer if everything was on the same scale of 1-20 or -10 to +10 but the UI is actually better than many modern products to me. Too trebly? Click ‘treble’ twist knob. Doesn’t get more intuitive imo.

[@2550marshall]

I'm a bit of an expert with those JMP-1 preamps. I have owned and used one for 20 + years. Here is a little info for you. The speaker emulated out SUCKS! Use the normal output into the FX return of a Marshall amp. Then use a load box with an IR or mic up a cab. This is the magic sauce: If you want it to sound really good and dynamic, put a BBE Sonic Maximizer, set around noon to one on both the dials, after the JMP-1 and before the FX return, in series NOT parallel. The clean tones are actually very good. OD2 and any Bass shift activated kinda sucks...just use OD1. The JMP-1 can sound drastically different depending on what power amp you use. It sounds way better with EL34 or 6V6 amps. If you are going to keep it and use it, I HIGHLY recommend having a tech check it out and if it has not been done, have the power transformer, battery and caps replaced. Trust me, do it! BTW, if you have a Fractal Axe Fx III you already have this on that unit. It can get close but not exact because he only modeled one power amp section. The Bass, Mid, Treble and Presence knobs are not actually a normal tone stack EQ. They are actually a 4 band graphic EQ. Use it very sparingly- like only 1 to 3 +/_. When used with an amp- set the output knob on front panel to only about 3 O'clock- use the channel volumes to set the levels. These JMP-1s along with a good Marshall head as a power amp and a BBE can get you some of the best sounding Marshall tones you will ever hear. The tones you got on this vid are like a 1 out of 10 compared to what the thing can actually do. BTW, that Michael guy was not using it right in his vid. Lot of guys get these hearing about how good they sounded but fail to get those tones because of user error. Trust me, I can make them sound good. Every time I played out or another guy heard me playing mine, I always got the same remarks.....DAMMMMM That sound good!!!!

[@chrisstevens4680]

Now there’s a man who knows what he’s talking about! Thanks for the post. I agree that the speaker sim is rubbish and it sounds way better through my Marshall 50 combo power amp section (EL34). Interesting about component servicing. I haven’t done my caps or battery yet. Re the mains transformer, are they prone to failure?

[@2550marshall]

@@chrisstevens4680 Yes, absolutely do it before you have issues. There are many different issues that guys will notice before they go bad. On mine it was a slight volume drop on the OD channel. Some guys may not catch that one. Oh, and have the soldered battery removed and replaced with a battery clip so you can easily replace if needed in the future.

[@roscius6204]

I'm with you. Had one since the were new. I run it into a JCM900 power section. And back in the day a Roland JC120 for stereo My preference is to use Boosts, Compressors and OD pedals into the clean 1 channel Then you can have the same tone and use the 4 x switch to vary the effects loop.

[@Johnsormani]

I bought one of these 10 years ago for peanuts. It was in a mint condition , hardly ever used. In the same period i got an Ada MP1. I thought the Mp1 had a bigger variation in sounds as the jmp1, but still the sounds that you can get out of the jmp1 are great and recognizable.

[@chrisstevens4680]

@@2550marshall Just my penny's worth on transformers: For any JMP-1 owners following this (and getting a bit freeked out that their pre-amp is about to explode!), it would seem that Marshall used different manufacturers of transformers. Some transformers used low quality laminates that were prone to giving a loud (mechanical) hum and heating up, and hense failed due to the heat. It looks like my JMP-1 has a Dagnel T6001 (which, I assume has higher quality laminates in the core.) I don't know if the transformer has ever been changed or if it is the original. There is no hum with the lid off and minor hum with the lid on but it doesn't get hot. It gets warm only with the lid on. This is due to eddy currents forming due to the magnetic field interaction between the transformer and the steel lid. (With the lid on, you can feel the vibrations, lid off, and there are no vibrations and the transformer is cool.) I guess if a unit has a loud hum then the transformer will also be noticeably hot and need replacing. One solution might be to drill ventillation holes over the transformer. This would also remove a lot of the metal that interacts with the magnetic field. That would save £60 to £100 for the transformer plus the labour!

[@threepe0]

“Why not make everything 20” two good reasons: units of measurement are important and the way electronics works/data types/memory constraints.

[@lostinpa-dadenduro7555]

I have had one since they came out and ADA-MP1. Love them both.

[@LukasDozer]

Which is better in your opinion?

[@lostinpa-dadenduro7555]

@@LukasDozer Whew. That’s tough. For straight up 80s shredder lead tones and the clean sounds the ADA-MP1 is great. The JMP-1 has that Marshall sound and can give you classic rock tones to really more modern heavy stuff. When I think of the ADA sounds it brings to mind Jason Becker, Marty Friedman, Racer-X type lead tones. More Fender like cleans. The JMP-1 makes me think of Smashing Pumpkins, Iron Maiden and then into more modern Marshall sounds. I used them both live into mic’ed tube amps and then later on into a rack mount speaker emulator to PA feed. There is a somewhat rare product called the ADA Ampulator speaker emulator rack mount. I also used to record them like that. Guitar, to preamp, to ADA Ampulator, to board. This was before speaker IRs and all that. I would probably start with getting a JMP-1 and then the ADA MP-1 second. I’ll give you another one to get, the Mesa Boogie Tri-Axis rack preamp. That plugged into an ADA Ampulator is basically the sound of the first three Filter records. “Hey Man Nice Shot”. You can probably skip the Ampulator these days with all the IRs and Cab Sim pedals that are out.

[@LukasDozer]

Hey thank you very much for this info. I will be looking into all of this. I really appreciate the time you took to reply to me. 🎸

[@LukasDozer]

A question for you: on a (TC Electronic G-Major) can you tell me how can I make headphones work with this unit? Thank you so much. 🎸

[@eliasfigueroa8791]

Still have mine 👊😃🎸Love it !

[@gsxerwhite]

The year my older sister graduated high school, and the year I was basically involuntarily nominated by my friends who played guitar to learn drums. I was a guitar player too lol but the only other kid who had a drum set sucked ass and i was actually better than him. I ended up with a crappy set that i rebuilt from the ground up with used gear and it had double bass. I turned it into a bad ass little red sparkle thrash set lol. I guess someone had to do it. Today I still love playing both, and bass and keyboard now. I love music.

[@NEBoddy]

Still have 4 of them, still use them. Too bad they discontinued them. They should release an anniversary edition. I would buy another one.

[@jerrymckenzie1858]

I would be curious to hear how it sounds through something like the Wall Of Sound plugin power amp and speaker simulation.

[@CharlesWillisBonsai]

I never had a chancr to use one f these, but back when the PodXT cae out i was always using the JMP1 model. Put the chorus on and I coul nail the Zakk No More Tears tone. Or at least thats what it sounded like in my head

[@Wileylikethehawk]

I’ve always low-key wanted one of these but it’s quite hard to find one that works right still.

[@Guitarrobb1969]

Rob, great review of the Marshall JMP-1! I thought it was super cool when it was introduced! Never owned one of those myself, but I always wanted one! However, I did own a Peavey Rockmaster rackmount tube preamp that had some incredible high gain for leads and super crunch for rhythms and sounded wonderful combined with an Alesis Quadraverb rackmount effects processor! I played a lot of gigs with that combination in the early 90's! Rackmount gear was so amazing back then! 😊👍👍🎸🎶✨️

[@eisbaellsche175]

I HAVE to think about ADAs MP1 and Peaveys Rockmaster. How about an easy going comparison?

[@doc_matter]

Wish your videos were longer than 10 minutes, other than that great playing, still really want a jmp-1 with any model matching gold Marshall power amp in a tolexed rack the size of a standard head to put on a 4x12

[@roscius6204]

The Cleans are great.😳 I still run one into the power amp of a JCM900. Only bummer is no midi control of the levels and EQ.... that would be amazing

[@KristonAbbott]

Me too, this a JFX-1 and 2 JCM 900s. Awesome

[@roscius6204]

@@KristonAbbott JFX-1 😯 I've never played one.

[@KristonAbbott]

@@roscius6204 you’re missing out.

[@glaucosouza1971]

Bought one brand new in '93 and now that you're saying that I realize it was 30 years ago. Gosh, times really fly.

[@fender4brad]

Got a JMD 1 50 watt head with this tone in the amp modules. Amp has to have an overdrive to thicken the tone. I have nearly sold it many times, but I plug it and have to much fun with it. I know people love to hate on it, but I think it’s a failed amp that is still a ton of fun.

[@ClintCurtis]

Marshall should do a pedal version, like the Friedman IR-X.

[@aaronhiggs]

Mick from Slipknot used a JMP-1 on the first album and tour. I still think he does in the studio.

[@bastianogr4960]

Oh, I remember this. I wanted it so badly, when it came out, but there was no way I could afford it.

[@petemullen3333]

I had one modified by Voodoo Amps. It was really great, the Voodoo mod took it over the top. That is what many of the pros did with it, including Billy Gibbons.