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Marshall JMP

Marshall 4140 JMP Club and Country [1978-1982]

User reviews on Marshall JMP products

Classic in one word or less (Marshall - 1959 JMP Super Lead [1967-1981])

By iamqman, 31/12/2011
These old Marshall amplifiers have such a crazy tone and a fantastic feel for anyone who is playing pop, rock, or metal music. If you are into the pop and rock tones then you really need a overdrive pedal that can push the front end of the amplifier to get that nice preamp type of distortion. Otherwise these amps are so loud because primarily all the you're getting power tube amp distortion when you really crank the volume. These amplifiers at the time didn't have a load of preamp distortion so what you would have to do is somehow boost the front end of the amplifier or have the amplifier modded buy some guitar amplifier technician to really juice up the tone. Many of your 70s and 80s and even 90s albums that would feature the British tone if they were using a marshall probably had the amplifier modded by someone. And if they didn't they generally would use an overdrive or distortion pedal to really boost the front end of the amplifier.


These amps basically feature a simple layout design on the front panel. You have a presence control knob, bass, middle, trebel, and then your volume control knobs. You have your simple high and low inputs and that's pretty much about it. There's not an effects loop on the back because this is before the time that effects loops became more popular and more common. Now today you effects loops on pretty much every single amplifier in production. If it's a new or modern style amplifier you're generally good to see an effects loop whereas many vintage modern amps will sometimes have an effects loop and other times bypass this option.


The tone of these amplifiers are fantastic and if you have a good overdrive pedal with maybe some effects modulation such as a chorus, delay, or a phaser, then you can get some great singing tone and effects tone that will mix very well in most band situations. There isn't a whole lot this amplifier cannot do when combining it in a nice pop, rock, or even hard rock band setting. These amplifiers are great platforms for getting a general tone that is widely excepted and sounds pretty good in most applications. Overall this is a great sounding amplifier and have a great vintage tone that also can sound very modern depending on how you set the cues and what type of the effects from your floorboard or your rack units can come up with.


You can find these amplifiers pretty easily and most use classifieds section. It's very common amplifiers and we're heavily circle circulated during its time of production. These are great amps and right now if you can get great deals on used gear because a lot of people are not buying gear these days I would recommend this amplifier to anyone who wants that vintage type tone with an EQ section that is very easy to dial in a good sounding guitar tone with. These are fun amplifiers and just a classic amplifier for most musical applications.

Hello I love you! (Marshall - 1959 JMP Super Lead [1967-1981])

By iamqman, 31/12/2011
This is about as classic as you can get when he comes to the marshall amplification hundred watt amps. This is such a great sounding amplifier and is a great platform for modification and high gain territory. These amplifiers are probably one of the most heavily used amplifiers in all of pop, rock, and metal music. They're extremely versatile in their tone and they cover a wide range of possible musical styles with just basically one channel. There isn't a whole lot of extra features that these older amplifiers have compared to the newer production models. You basically have a presence control knob, bass, middle, travel, and then your volume controls for each set of high and low inputs with the dark and normal input. They are very standard type of amplifier that is a great platform to use effects or modulation or any type of overdrive boosting pedals.


No manual is require and probably hard to even track one down from the early 70's However, you don't need one to get this thing up and running. It is as basic as it gets.


I absolutely love the tone of these amplifiers in a loud aggressive setting. These amps have such a warm and articulation that is extremely comfortable to play and makes your notes of your guitar just jump out. there is a warmth that comes with Marshall amplifiers that is very different from a Mesa boogie or a Fender amplifier which are probably the top three amplifier production companies in the world. I would probably say that Fender is the biggest and then a close second would be Marshall and then a Mesa boogie would be the third most popular heavily used amplifiers. The Marshall has a distinct tone that is very different than most Fender amplifiers but really it takes a lot of its influences from the Fender bassman amplifier. The large majority of the circuit is a reflection of that original amplifier with some new modifications at least for that period of time when Marshall was building these amps. These are great sounding vintage tone amplifiers and they are excelling at giving you a perfect blend of frequencies that compliment most band mixes.


With the market right now the way it is with people not really purchasing gear as much as they used to be. These amplifiers you can find pretty inexpensively just a few years ago. They are heavily cycled and pretty available if you look throughout many classifieds and especially eBay. If you give enough time you can probably find one that's a really good condition that will fetch a little bit more money but there are a lot of people that are just simply dumping these older amplifiers for newer production amps that have multiple channels with different bells and whistles that are more applicable to today's modern music.

Classic old British tone (Marshall - 1959 JMP Super Lead [1967-1981])

By iamqman, 18/01/2012
Marshall is one of those amplifier companies as really stood the test of time. They probably easily one of the most recognized amplifier companies in the world. They're mostly used from pop all the way up into metal music. They do have a particular sound and feel that is unlike any other amplifier in the world. If the classic British tone that is inviting in vibrant to say the least. This is one of the all-time best amplifiers that it's ever been built.



4 EL34s in the power stage
3 ECC83s in the preamp
True bypass series FX loop
3-band EQ
Presence control


This amplifier has such a great sound and anyone who has ever been around any type of music knows that the Marshall plexi is just one of the best. This amplifier is basically two channels in one. You have a higher low input for each channel so that gives you a total of four possible guitar to put plugs. Each one of these channels has two volume controls. This is a non-master volume amplifier so in order to get some crank distortion or overdrive you really have to crank the volume out of this amplifier. Of course if you're an apartment or small home this is not easily doable. So therefore you will need any attenuator or some sort of modification to get the amplifier to distort at lower volumes. This can be done quite easily if you push the front of the amplifier with an overdrive pedal such as an Ibanez tube screamer or a boss SD-1 pedal. Or you can or you send it out to get modified by many of the online amplifier modification specialists out there.


These amplifiers you can find new for right around $2300 or so. That is a decent price for this amplifier and certainly one that might be a little bit out of the budget range of many budgeted musicians. However you can find these all day long used very easily for probably less then half about. I have seen them as low at $100 used so I would go that way on this amp.

Marshall JMP mkII 50 watt combo (Marshall - 2203 JMP Master Volume Lead [1975-1981])

By MGR/Steven, 20/12/2003
I purchased this amplifier used at Rebel Music in Oxford, MS. I had a 100 watt solid state Yamaha and wanted a tube amp. I got lucky and found this amp while looking at Traynors. It is probably from the mid to late seventies and has high/low inputs and a master volume control.

The tone, even though it does not have many features, the one thing this amp has that many new production amps do not have is great tone. If you put rat distortion in front of it you have Angus and Slash at your disposal. I only use the low channel because it is even loud enough to go unmiked at small clubs. The one thing that really helped this amp are the tubes. I have installed all Electro-Harmonix tubes and it makes a huge difference from the sovteks that were in there. This amp is a great find and if you see one, get it.

There is only two things wrong with this amp, the weight and the volume. Every good tube amp worth its salt is heavy so I can't really complain, but it is a pain to get it on stage. This amp is also intensely loud. the high input can get the cops at your house in less that 5 minutes. Even though the volume is good, it still can be a bit excessive.

It is an old Marshall, I have dropped it a couple of times after a long night and it does just fine. Except for a speaker wire becoming unattached, there has been no problems with this amp.

These are great amps and I like the combo because it involves less to lug around. The sound is great and it only cost me $400 and maybe about an extra $200 to undo some sloppy mods and to get it fitted and rebiase with some new tubes. I highly recommend these amps.

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