All user reviews for the Marshall 4100 JCM900 Dual Reverb [1990-1999] [2003 - ? ]

Any amp head, 100 watt lamps with lamps, dual reverb that is an adjustable reverb on each channel (clear and saturation)
Effects loop connects to the back (send and return), can reduce the output power to keep the heat without power (though effective)

UTILIZATION

Config super simple and intuitive.
After one day, after testing and adjustments, is adopted.
It's a basic amp in its design, but he is quick to find a wide variety of colors and heat.

SOUNDS

I play rock, very fat, very big and there is the foot. This amp, it always kills me for 10 years.
I have two guitars: Les Paul and Ibanez jem 777.
The Paul and the JCM is a couple, they are on the same wavelength. Anything goes. The most saturated to crunch huge very big and warm, this amp is beautiful. The harmonics sound, the amp sings, it twists, it's hot almost burning.
I can compare it to two other amps that I bought in parallel, and passion that I have. Mesa Boogie and Carvin, the dux all lamps: I kept one, the JCM 900. And I'm not ready to sell it.
Only flat, clean sounds sound better with the JEM, but with the les paul, it is very pleasant to play tight or small ruthmiques arpeggios with reverb on 7-8.

OVERALL OPINION

Used for 10 years
This is a serious amp that tears
Yes, I have tried many styles by his passion, I bought 2 (see above) and no better.
I paid 8000 F at the time (1200 €) and how they regret?
I do not know what I would search other amp modeling effects? I rest on authentic sounds, mega hot, with an amp that I am screaming and defending itself.

All-tube head 100Watt, 2 channel, reverb, loop.

UTILIZATION

Super mega simple, level and gain indépandant EQ per channel and common. It is therefore a homogeneous amp EQ does not interfere too common.
Marshall is the caricature as can be, no matter the position of the knobs for EQ, there's always the same, so 2 = 2-channel sound. The clean has a good gain margin before saturation is quite nice.

SOUNDS

Wow I'm not destester Marshall, this one I like it. The clean is worthy of a good transistor, I think I have the same on my AVT. There is no depth and little momentum, very little extent, the sound seems very tighten, narrow. However I tested it on an 4x12 ".
For saturation, I played the AC / DC and a little Led Zep ... But nothing else (though I do not lack influence and reference) I was hyper blocked. The sound is distinctive and highly inflexible, you must love the amp as the spit, but then I found it particularly dirty, rough ... And always flat and narrow, as if I was playing on a small amp while it is supposed to send the wood ... I had the same presence / power projection and the same with my AVT100 Bof bof ... everything.

OVERALL OPINION

According to the forums There is the JCM800 and JCM2000 worth every penny in Marshall, I am at least agree that the JCM900 is below the JCM2000. I've never played on a 800, but I do not miss it.
Well, this amp has disappointed me, the same day I played a JCM2000 TSL122, a C50, a Hot Rod, an AC-30 and F30 and I all found above the JCM900. You really liked, and even though I'm not a big fan of Marshall JCM2000 I found the very good and I recommend it, but this one is rather poor.
I think we can find much better for the same price, while still in his "English" type Marshall.

100 Watt lamps, my 5881 model is equipped with amplification.
Sufficient connectivity, effects loop and speaker outputs on the rear.
Basic adjustments on the front.

UTILIZATION

Very easy to use, the balance between the two channels is easy to do in order to have a clear and balanced levels of saturated sound that is not always obvious.
No need for manual is very basic and simple.

SOUNDS

Against all odds, I was amazed by the clean sounds that come out of this amp. Marshall and clear for me, it was not compatible, then I'm on the ass. While this is not a Jazz Chorus, but the clear one grain of its own and I like good with both strato, TV LP.En that address many clear channel, one can have a slight crunch to very nice blues, just playing the guitar volume.
Saturated when the channel is a marvel to him. Attention not Trash, metal, or other derivatives, but for blues, rock and hard rock, this is his 25 years of history. AC / DC and consors ...
That right, dynamic, powerful, if necessary.
A report, it is possible to have good sound saturated even at low volume.

Accepts all possible modulations in the loop. Boosted channel is sufficient unto itself, or we go to the volume knob on the guitar, or you put an overdrive ahead to warm even the lamps for the lead.
Small flat, tone corrections are not extreme efficiency.

A point, my head is connected to a 4 x December 1960 all lead is most basic, just careful in tightness.

Only major complaint was heavy and cumbersome.

OVERALL OPINION

Often criticized, this amp is often not used to what it was designed to do: Rock'n roll and hard rock.
on the other hand, with just a guitar live in, there are already what to do with a good variety of sounds, without leaving the particular grain Marshall.

And car with large trunk required if used with a 4 x 12 cabinet.

Pramp ECC83 and 4 lamps in 5881 (6L6) in amp. All lamps 100 watts.
This is another version of the Dual Reverb JCM900 placing on the market it was released, as sometimes Describes with EL34.
The sound is more in the spirit of Hendrix or JTM45 JCM800 that the trs hard rock with EL34.
Connectivity classic faade a single input, footswitch input for a two floors clean and pramp Lead (distortion). Two outputs with adjustable HP 416ohms, an effects loop in / out, Line out output, a 50/100 watt switch output level DSIR.
Rglages quite simple: Master volume, reverb and gain for each level, Prsence / bass / mdium / High together.

UTILIZATION

Config prcis trs simple as above. a clean, one lead.
The sound is pretty easy to find if you like Marshall and if you know the kind of color research. For my part, often making the hard rock and heavy, I use a rack full of effects, including distortion, and I plugged into the Clean, the gain background (no distortion), master or 5 6 with output level of the rack rather soft, prsence 9 or 10, 8 bass, mdium 2, 3 treble .. Used the fact that these levels provide floor with all the fun lamps chattoyantes ... all on two cabins in Greenback and G30H

SOUNDS

I like the sound Marshall for 30 years. I still have 6 Marshall amp heads home, DIFFERENT MODELS (I know, it's a bit too much.
Gibson Guitars Lespaul and MusicMan, Gibson pickups, Dimarzio and EMG.
Everything is feasible if we know understand the bte ...

OVERALL OPINION

Since 15 years.
My only concern is his weight. Unfortunately, with large back problem, the heads JCM800 and 900 are no longer for me .. I spar several heads of this kind. I still have one which I can not dernire Sparer me ... I am a sentimentalist.

A tube amp toutte ... View stats for other

UTILIZATION

I'm only serves as "juice" ... There is that in my practice and it makes very good apareille

SOUNDS

I have a line6 PODxt Live that I plug into the clean channel I have a setter for its clean without my usual effect of pod after I set my sounds in my pod is only the marshall spit sauce and it makes it very very VERY well I would put the flight 6 and whatch out because it smashes your ears!

OVERALL OPINION

I toutte the power of a full tube amp with a digital sound studio at very high volume without feedback Bébitte bullshit kind of

On this head amp is not perfect but for the fact that I use it makes acsenseur really good!

100 watts all-tube head has two channels:
- 3 12AX7 (I juggle a bit between The models I like: tung gold ground, Hey, LPs, and China 12ax7B)
4 EL34 (Groove tubes for my part)
- A 4-band legalization
(Bass, midlle, treble, presence) for both channels, but ultimately damage if Gnant.
- 1 SETTING THE rverb indpendant for each channel.
(That's gnial by against).
- Two volume and two CONTRL gain.

Connections:

Faade of:

Between a jack for the guitar
A footswitch between the two tracks.

Rear:

An effects loop with rglage
Two outputs for recording: A direct (sound pramp not filter)
A filter for recording purpose.
Impdance switch (8 or 16 ohms)
A power switch Low or high)
HP output.
Two fuses with LED lights indicating when the lamp is dead.
Gnral a fuse. ACCS easy all the fuses)

For me it's team in Fully Groove tubes. (EL34 amp in)
10 compltes connections for the switch to impdance, and output power.

UTILIZATION

Using ultra simple, easy to handle.

SOUNDS

A Clear Channel / Overdrive:

-> To the sound of this amp (and even any) I recommend a 10-band equalizer. I found a home RgE10 boss is 40 euros. It's fantastic! The sound is incredible proportions! The original sound seems quite flat, it really has to try and serve both the blues rocker that Aguri of all kinds! For cheap you rediscover your sound Fully and I do not even speak the clear! <-

CHANNEL 1:

Clear
I t trs also surprised by its clear, sweet music.
Without being among the most impressive, the sound is simple but the fact remains that they are rich and can play sweet things without damaging the eardrums. Or a good chorus and flanger ca does it well!

Overdrive:
Impressive accuracy! Carr was dead! Arle pile on the ropes for the Ac / Dc well surly! The SETTING THE prsence can bring out the grain finnesse. A good grain ar a desired thickness ... gnial! Heat and density are waiting for you!
I rather like to push the volume and the gain of Channel 1's for a good lamp.
Channel B: OD / Disto
CHANNEL 2:

Disto:
A gain level, I want to say it, enough to make the maiden metallica and other. If you possdez an overdrive pedals to boost Do not hesitate, worth a peek hours .. ear!

Trs compress the grain is compared to the other two. We do here has aa much more muscular sound than the rest. But the major problem (at last I found is that it really lacks mediums ...

The sound is heavy cras and trs. So I do not know if the era was c'tait the goal but lacks a bit of momentum. has reminded me of an equalizer "V". You know the young mtalleux 18, who cut the growing medium and low?! lol rsultat emerges at all in the mix and the sound gives no shade ...

Overall the amp once equalize spring, there are fast muscle Marshall sound equalizer. ) For channel 2: Eq mandatory!

The sound is good trs as a whole, the distortion is in mute trs own course and even more after stroke by pedals.

The low and high modes can juggle between two colors, is low in acute soft, less dynamic overall and trs sounds good for blues. In high is richer and muscular perfect for live performances.

OVERALL OPINION

An amp that juggling a Hard rock blues. Good reliability of the head in it even is well mounted and trs aa look more than solid.

The sound is missing characters and frankly it's not an amp that promises hours of fun! The power is ample, the grain is good it's good that Marshall can dgoter for cheap .. (400 euros for me).

As said one of our friends here as I pass by almost as Marshall, he's a perfectly fine with me waiting to put a little more for a 800 or more an antiquated genre plexi et al. .. YUM!.

It is not about an ultra high-end amp but for a while first lamp seems a good choice trs:

You want to go to any lamp, you're tired of your transo but your budget is tight?

DARK DARK DARK!

JCM 900 4100

Dejate everything said about her

UTILIZATION

The JCM 900 is very simple to use, very simple

Regarding the sound, it must be admitted into clean is a bit stiff at the base, and not saturated trs a metal base that's true ...

SOUNDS

For it is the cons that have become interesting, using the JMP avecun 1 and 1960A with a more or less different guitars: Jackson RR with emg 81, emg HZ LTD7 strings, Gibson Les Paul Standard and a squier strato di Marzio with a microphone, the sound is really metal and hardcore!!

Ke the fact the sound is not typical in trs clean, my friend, a JMP that does the job and it really trs trs well lol
It sounds really metal, TRS big sound and the JCM 900 trs filled out its role of power amp!!

He is strong, too even, but its role APRS all.

Try for others like peawy, the mesa and other JCM 900 is really the height, if you like big fat are well and that we love against less acute Submitted too, the JCM 900 and JMP 1 are unstoppable.
It passes easily obituary Hatebreed and really does not sound like fear or deftones slipknot ...

OVERALL OPINION

In 10 years of loyal service I do not resell any time soon!

It is beautiful, sounds like hell, and impresses with its simplicity and power <img class="smiley" src="/images/audiofanzine/interface/smileys/icon_wink.gif" alt="wink" />

I also possde peawy, trs good too, but different, the JCM 900 is built for him laseine !!!!!!!! <img class="smiley" src="/images/audiofanzine/interface/smileys/icon_mrgreen.gif" alt="mrgreen" />

I got it used, I board is jamaist deu

If you like Marshall, metal, EMG lol the JCM 900 amp is a really great !!!!!!!!!!!!!!!!!! <img class="smiley" src="/images/audiofanzine/interface/smileys/icon_mrgreen.gif" alt="mrgreen" /> <img class="smiley" src="/images/audiofanzine/interface/smileys/icon_wink.gif" alt="wink" />

Do not hesitate if you see him, it will be a great companion!

This is not an all-tube amp. There are a lot of transistors alongside two 12AX7 in the preamp stage. It is indeed they who bring the grain saturation particular JCM900. It is also thanks to them we can obtain large saturation even at low volumes unlike JCM800 example. The combination of transistors and lights returned to some sort to have a distortion pedal included with the amp head.

For the power (which is all-tube):
A 12AX7 phase inverter followed by a push-pull four EL34 (the 5881 U.S. model).

UTILIZATION

The tone stack is not what I've seen better. Do not hesitate to set equalizer to max or zero. I see so many guitarists who do not dare turn the knobs and put everything at noon.

SOUNDS

The clean sound is not up to the race condition JCM900 but was not designed for that. This is an amp for lovers of Rock and Hard Rock distortion.

OVERALL OPINION

I have since 1999. Buy € 530 at the time with the baffle 1960A.
By dint of perseverance and testing of any kind I finished not find a config that pleases me.
Fender Jaguar Boss SD1 + modified + clear + channel JCM900 Cabinet Mesa Boogie 1x12 Thiele.
I never use the boost channel because I find it lacks dynamics and spring mixes poorly. In short, the boost channel did a lot of noise but nothing is heard.

Added 10/04/2010:
I change all the preamp section for it to be 100% lamp except the reverb which remains transistor. It remains only a single channel like a JCM800 but with two gain settings and two input (high & low). Here was a lot of work but I am happy with the result for only 20 € component by taking the best quality. As against this no longer really a JCM900.
I made a post about the transformation for those interested:
https://www.projetg5.com/modules.php?name=Forums&file=viewtopic&p=54549 # 54549

JCM 900 4100

tube amp: 3 in preamp (instead of 4 for a JCM 2000 or JCM 900 SLX) and 4 power (EL 34 for mine).
Impedance selector to play 50 or 100W. Personally I prefer to leave it on 50W.

Purchased 400 secondhand €

UTILIZATION

2 channels: clean and lead A B each with 1 volume (Master), 1 win and 1 reverb
EQ common to two channels: a problem if we want a channel switcher to another, the sound is too much dispute.



SOUNDS

It is perfect for my style hard rock (ACDC, Airborne, Led Zep, ZZ Top etc..).

I use a Gibson SG or a Start 61 U.S. and two with the sound I like. All in a baffle 1936 in Marshall Celestion Vintage 30 (I did not like with the G12T-75).

29/11/2010 (after 1 year): ca does very well with G12T-75, especially 4x12 is less dry, more open.

I use only the channel B Lead. Like not at all push the channel A, it sounds too loud and clapping for my taste, so to get a crunch on channel B I drop my guitar volume knob (with the SG that sounds wonderfully well for the TDCA).

What I love about this amp is that the sound is well defined, and cuts into the mix. What is missing is a little "soft."

29/11/2010: it's actually the v30 gives this side snapping, dry ... it is sweeter with G12T-75.


OVERALL OPINION

After 10 months I use repeating and concert, I do not regret that choice at all.

Before I had a JCM 2000 TSL 60 (with 2 v30) is the sound was good, warm and mellow, but too often "fuzzy". The 2000 is missing a definition for playing power chords in the TDCA.

The pros: well-defined cuts in the mix, good value for money
the -: EQ unmanageable if we use the 2 channels (it's not my case)

Lamps (Power & eq) 100w 2 channel
I'll spare you a description ... eq for each channel it could be fun! but are not!

UTILIZATION

There is no simpler, no need to adjust the hours it sounds!

SOUNDS

I played noisy, punk, rock, indus, with a rise of 70 SG DiMarzio, a Mustang Us, a Heritage ... and never disappointed! In Briefly, crystalline or clean sounds I do not know, although with the Mustang and the channel A of the amp the sound is more than respectable wholesale with single coils it goes well, we can play funk fusion Red Hot ... but we chose not to its characteristic crystalline Marshall ...


OVERALL OPINION

I use that since there is, I'm also JCM800 master volume and a few others but this one I do not loose! The scratch who tested it all appreciated . But then I tested the version with the 5881 and there I found no sound, nothing to see, I also tried the 2000 I can not find it better with buffs that are useless if not have a sound yucky!
This is an amp that is not expensive OCCAZ and with a good selection of lamps it does! Otherwise the little negative point is that the knobs spit, as usual! After years of bomb I'll have to contact me decide to change them!

Amp 100w lamps, said Hi-Gain
2 channels, common equation, separate gain, reverb separate separate volumes.
Rather summary, I like!

UTILIZATION

I am using the crunch that obtained by pushing the gain (7-8) 1 channel.
Channel B is truly Hi-Gain, it throws up the distortion.

Treble 7, 7 Middle, Bass 5, 8 presence.

It works!

SOUNDS

For rock 'n roll, the setting is impeccable expressed above.
I play it on repeat with my LP Studio (micro BB2).

A good crunch though this rather modern (fine texture). Beautiful shine and beautiful presence, I genuinely like. I obtained by pushing the channel A (which must be the clean channel ??!!)

Not tried the clean or hi-gain (not use it). And while many decry

OVERALL OPINION

this amp, I find it wrong. If I had one complaint to make, it would be the grain a bit too tight.
But otherwise bore the crunch mix well, it's more enjoyable. With a boost upstream, we have a good lead sound. He collects well as the fuzz, it looks like he will die or that HP will be torn apart.
I play it in repeats 1 time per week is the amp of the studio.

This is a tube amp with 5881 power tubes instead of the El34s you normally find in Marshalls. It is a 100/50 watt amp with spring reverb and two foot switchable channels that share the usual tone controls but have independent gain and reverb controls. The foot switch also controls the reverb.

UTILIZATION

Its a solid well built Marshall amp with straight forward controls.

SOUNDS

This was my first Marshall. I bought it in the early 90s (along with the matching 4X12 cab) and have long since sold it and replaced it with the 30th Anniversary Marshall so I'm writing from memory here. I was immediately disappointed with this amp when I got it and never warmed up to it. I wanted a Marshall that sounded like the classic Marshall sound of the 70s and assumed that all Marshalls were basically the same. I had no idea that Marshalls could be so different. Now I am wiser but poorer. This 900 Marshall sounded nothing like the classic traditional Marshalls which are based around the EL34 tube. The tube in this amp is more like a 6L6. The distorted sound is harder, more aggressive, darker, with harsher harmonics and for some reason the amp seriously lacks bottom end as well. Oddly enough I loved the clean channel with reverb which sounded beautifully liquid and almost magical at times but who buys a Marshall for its clean sound?
I have also come to realize over the years that the cab I bought was wrong as well for the sound I wanted because it has the now common Celestion G12T75 speakers which are best for metal but not 70s rock. Marshall speaker cabs of the 70s used G12H30s or others that sound entirely different. You live. You learn. You spend gobs of money.

OVERALL OPINION

This amp was not my cup of tea. However based on other reviews I've read some people apparently love it . Its clearly a love it or hate it thing with this amp. It depends on the sound your after. The bottom line is that you've got to realize that Marshalls from different eras sound quite different from one another and so do the speaker cabs depending on the speakers. To get the sound you want you've got to get the right model amp and the right speakers.