1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
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Ayrton
New member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
Basically the same amp, however, little things can affect the final sound. I own several early '70's Superleads and they all have their own personality. Can you try out this amp with your own guitar? Ultimately what really matters is how it sounds to you.
Basically the same amp, however, little things can affect the final sound. I own several early '70's Superleads and they all have their own personality. Can you try out this amp with your own guitar? Ultimately what really matters is how it sounds to you.
Ayrton
New member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
The term "plexi" refers to the plexiglass front panel Marshall used until 1969. Starting around 1970 the front panel was metal.
There is no significant difference between '76 and '77 models.
You might want to read up on some Marshall history.
https://reverb.com/news/a-history-of-marshall-amps-part-i
https://marshallamps.com/live-for-music/news/history-1959slp-plexi/
The term "plexi" refers to the plexiglass front panel Marshall used until 1969. Starting around 1970 the front panel was metal.
There is no significant difference between '76 and '77 models.
You might want to read up on some Marshall history.
https://reverb.com/news/a-history-of-marshall-amps-part-i
https://marshallamps.com/live-for-music/news/history-1959slp-plexi/
Ayrton
New member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
I would also ask what type of music do you like to play? What kind of sound are you looking for?
Where are you located and is the price comparable to your market?
100 watt Marshalls from the '60's and '70's can be temperamental and may not offer the tonal range some players want or need.
A good MV certainly can make all the difference, and there are some modders out there who tweak Marshalls (or like circuits).
I would also ask what type of music do you like to play? What kind of sound are you looking for?
Where are you located and is the price comparable to your market?
100 watt Marshalls from the '60's and '70's can be temperamental and may not offer the tonal range some players want or need.
A good MV certainly can make all the difference, and there are some modders out there who tweak Marshalls (or like circuits).
1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
I play metal/ hard rock. I like a good grind also with an organic flavor and a somewhat tight bottom end but not too modern. Tool , System of a Down, AIC, Nirvana are my favorite bands. I’m in The Northwest. This one was a non MV that was modded to have the MV in the back of the amp. No holes drilled.Thank you for your responses btw.
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I play metal/ hard rock. I like a good grind also with an organic flavor and a somewhat tight bottom end but not too modern. Tool , System of a Down, AIC, Nirvana are my favorite bands. I’m in The Northwest. This one was a non MV that was modded to have the MV in the back of the amp. No holes drilled.Thank you for your responses btw.
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Last edited:
Ayrton
New member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
That is because everything after 1973 is crap...
(I kidd, I kidd)... The 1959 design is basically the same from '67 to '73. The biggest change was going to the printed circuit board mid way thru 1973 (however the sound and design remained until '75-'76). The tubes changed from EL34s to 6550s around that time as well (my memory is foggy) I think there were some cosmetic changes in the '76-'77 range, but if I recall correctly the factory MV started in 1976 (ish).
I will never tell you not to get a classic Marshall ( I have several and love them all like children), but they are not all in one wonders with channel switching and effects loops. Super tight "chugga chugga" is not what they do (you may get what you want with pedals of course). Tone is subjective. One man's bright is anothers cut.
Try it out and see what you think.
That is because everything after 1973 is crap...
(I kidd, I kidd)... The 1959 design is basically the same from '67 to '73. The biggest change was going to the printed circuit board mid way thru 1973 (however the sound and design remained until '75-'76). The tubes changed from EL34s to 6550s around that time as well (my memory is foggy) I think there were some cosmetic changes in the '76-'77 range, but if I recall correctly the factory MV started in 1976 (ish).
I will never tell you not to get a classic Marshall ( I have several and love them all like children), but they are not all in one wonders with channel switching and effects loops. Super tight "chugga chugga" is not what they do (you may get what you want with pedals of course). Tone is subjective. One man's bright is anothers cut.
Try it out and see what you think.
Ayrton
New member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
Clapton says "the tone is in the trousers" (but he used Marshalls)
Only you can decide if you like what you hear. You can't go wrong with a Les Paul thru a Marshall in my opinion. I play strats, teles, Les Pauls, Jags/Jazz, everything thru mine and have no complaints.
Of course, I hoard gear like an old lady does cats.
Clapton says "the tone is in the trousers" (but he used Marshalls)
Only you can decide if you like what you hear. You can't go wrong with a Les Paul thru a Marshall in my opinion. I play strats, teles, Les Pauls, Jags/Jazz, everything thru mine and have no complaints.
Of course, I hoard gear like an old lady does cats.
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
https://youtu.be/LUf551mWkrk
Looking for this tone
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https://youtu.be/LUf551mWkrk
Looking for this tone
Sent from my iPhone using Tapatalk Pro
Ayrton
New member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
You will love the JMP then. Play it and have it checked out to be certain there is no monkey business inside
You will love the JMP then. Play it and have it checked out to be certain there is no monkey business inside
MetalManiac
Li'l Junior Member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
In 76, they put out a 50 watt "non cascaded" version MKII / JMP (?) that a lot of people try to avoid, so be aware of that. Don't ask me what non cacaded is- it has something to do with the way the preamp is designed. You'll be fine with the 100 watter.
In 76, they put out a 50 watt "non cascaded" version MKII / JMP (?) that a lot of people try to avoid, so be aware of that. Don't ask me what non cacaded is- it has something to do with the way the preamp is designed. You'll be fine with the 100 watter.
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dystrust
Well-known member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
He's looking at a Superlead that was modded to have a master volume, so that doesn't apply. The non-cascaded preamp you're talking about is from the first generation 2203 and 2204 from '75 and '76. I don't remember how it worked, but the high and low sensitivity inputs were literally that. Many players weren't happy with the tone, and it was redesigned for '77. The 2nd generation 2203 and 2204 bypass the first preamp gain stage when using the low input.
He's looking at a Superlead that was modded to have a master volume, so that doesn't apply. The non-cascaded preamp you're talking about is from the first generation 2203 and 2204 from '75 and '76. I don't remember how it worked, but the high and low sensitivity inputs were literally that. Many players weren't happy with the tone, and it was redesigned for '77. The 2nd generation 2203 and 2204 bypass the first preamp gain stage when using the low input.
allbutromeo
Well-known member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
There's allot of good info in here
https://solodallas.com/the-vintage-marshall-guide
There's allot of good info in here
https://solodallas.com/the-vintage-marshall-guide
allbutromeo
Well-known member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
As far as this cascading/non-cascading, here's my attempt to explain it (if I'm wrong let me know). Vintage Marshalls use a 12ax7 for the gain stage, as most of you know, but for those who may not, a 12ax7 is a dual triode meaning it's two triode tube circuits in one tube bottle. So to explain how these work in these amps I'll compare it to something else guitar players are familiar with, the humbucker. Like the triodes in a 12ax7, a humbucker is two individual coils in one pickup that can be wired a variety of ways. Non-Master Volume amps are wired to use one side of the tube for each channel, like wiring up the bucker to run split. If you wanted more gain you could jumper the inputs with a patch cable and use both gain stages at the same time in parallel, just like with the pickup, it increases output (gain), but the character remains similar to using a single input. Cascading preamp run the halves of the tube in series for maximum output, this is what the Master Volume amps use (except for the first year or two of the 2204). As the amp the OP is talking about is modded it may or may not have a cascading preamp, or may be able to run either way depending on what input you plug into. Ask the seller as many questions about it as you can think of, but IMO you should buy it, worst case scenario is you end up not liking it after a while and you can sell it for what you bought it for
As far as this cascading/non-cascading, here's my attempt to explain it (if I'm wrong let me know). Vintage Marshalls use a 12ax7 for the gain stage, as most of you know, but for those who may not, a 12ax7 is a dual triode meaning it's two triode tube circuits in one tube bottle. So to explain how these work in these amps I'll compare it to something else guitar players are familiar with, the humbucker. Like the triodes in a 12ax7, a humbucker is two individual coils in one pickup that can be wired a variety of ways. Non-Master Volume amps are wired to use one side of the tube for each channel, like wiring up the bucker to run split. If you wanted more gain you could jumper the inputs with a patch cable and use both gain stages at the same time in parallel, just like with the pickup, it increases output (gain), but the character remains similar to using a single input. Cascading preamp run the halves of the tube in series for maximum output, this is what the Master Volume amps use (except for the first year or two of the 2204). As the amp the OP is talking about is modded it may or may not have a cascading preamp, or may be able to run either way depending on what input you plug into. Ask the seller as many questions about it as you can think of, but IMO you should buy it, worst case scenario is you end up not liking it after a while and you can sell it for what you bought it for
GilmourD
Burritotoneologist
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
FYI, Randy Rhoads' Marshall was a very late JMP 1959 that was modded. It had the one-wire mod for cascading the channels and a master volume. Nothing wrong with the later JMP NMV amps. I just wish they stuck with the smaller headshell for the 1987.
It's because 1973 was the year that Marshall switched from tag boards to printed circuit boards. After that they're all basically the same, even after the change to JCM800 cosmetics (yes, there is a 4-hole model 1959 with JCM800 cosmetics).
FYI, Randy Rhoads' Marshall was a very late JMP 1959 that was modded. It had the one-wire mod for cascading the channels and a master volume. Nothing wrong with the later JMP NMV amps. I just wish they stuck with the smaller headshell for the 1987.
dystrust
Well-known member
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
I'm pretty sure all 2203s & 2204s have the master volume before the phase inverter; I don't recall ever seeing a double pot inside one.
Did somebody say Marshall?
IIRC, the earliest (c. 1975) Master Volume Marshalls featured a pre-PI master volume (as opposed to post-PI).
I'm pretty sure all 2203s & 2204s have the master volume before the phase inverter; I don't recall ever seeing a double pot inside one.
Re: 1976 100 watt Marshall JMP Super lead vs 1977 JMP Super lead.
Thank you. Very good info.
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Thank you. Very good info.
Sent from my iPhone using Tapatalk Pro
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