All user reviews for the Marshall 4102 JCM900 Dual Reverb [1990-1999]

All-100w lamps, a very simple facade: a 3-band eq and presence of a knob
-2 Channels:
Clean with a gain, and a master reverb
Lead with the same thing, a gain, and a master reverb
So two spares for this reverb amp (its strong point)
-An effects loop, direct output (output pramp), 2 HP

UTILIZATION

The sound is a little time, I play metal and this amp makes it good! (Slayer does not play does not JCM900 on the way).
It is advisable to use it as a head, not combo, the sound is too limited to 2x12 ". But still has an advantage of being able to play it by repeating 'without having to lug around a body with 4x12" ...

SOUNDS

Unlike what they say, the clear sound is more than adequate, just push a little master (having a history of what the lights!). A warm and round the Marshall.
Lead gives a saturation that goes from a slight crunch distortion aggressive, but to get a really extreme sounds, you really heat lamps: volume 5 / 6 of the master and gain max. This gives a very aggressive distortion but lacks a lot of bass if you stay on the combo.
I put 10 for the clear sound for lead and 6. ... So an average of 8 / 10

OVERALL OPINION

For an all-tube amp, the price is unbeatable. I use it for over 3 years and its strong points are its typical Marshall (hot hot hot!) And its dual reverb (one per channel).
With experience, I highly recommend him stick a 4x12 "in the behind! and play combo e Repeat '(2x12" by repeating "it's more than enough!).
This is an amp that takes off the eardrums if pushed enough but lacks bass combo.

The 4102 is a combo amp lamps. Its power is given to 100 watts, but I had a Vox AC 30 (33 watts) that sounded as loud. There are relatively few settings and it is regrettable that the qualiseur is common to both channels (a reverb plutt indpendante). It has a choisr pedals to the channel and activate the rverb. There is an output of selector with hp supplmentaires impdance. The weight is consquent (2 x 12) but the grips are comfortable and well latrales useful.

UTILIZATION

To get sound, it's simple, since there is little rglages. Of a good sound ... Lourdes is the passage that board. When the amp is warm, the tle derrire potentiomtres the gondola and ESG handling of them. Moreover, it appears that rverbe is a bit fragile, mine acd.

SOUNDS

The qualiseur is almost ineffective. The sound is clear cry commonplace. There is no deep throbbing bass or treble singing. Waterloo, dull plain ... I used the keyboard amp Laney an era and an old lamp Garen, who killed the Marshall no problem in terms of clean sound. Gain as the name does not indicate (high gain) remains flush with pquerettes. Pluissance enough to finish the deaf, but the hundred watts ads are hidden. In fact, to have good sound (no more), you really play hard trs (and distortion) to properly heat lamps. But overall, the sound is trsdcevant. The only possible use, as noted by another user, is to connect a prampli (a pod?) For one's drinking. The neutrality of the JCM is then a property: it serves as a power amp. The problem of this amp is résumé in three points: knobs ineffective, no bass and no gain. That's a lot for a single right?

OVERALL OPINION

I used the Marchall 4102 for six years (that long ...) Since I'm dfait. Instead, for the same price, I bought a guitar amp. Acqurir before, I had almost nothing tried other, which is why I bought it. We all make mistakes of youth ... The price does not seem excessive for a one hundred watt bulbs, but given the benefits ... The advice I give is a potential buyer walk away and run fast. There is no better elsewhere and more expensive.

Amp has 100w lamp (room 200 to 300 people without sound) is already
-2 Channels clean and distortion (switchable)
Loop effect send return (trs important)
-Possibility of the couple an extension marshall 1936-1922
-Independent reverberation and distortion to clean (the c is really good think)
Trs-duty for me it is almost indestructible because I see him doing all couleurs.j have the chance that it does not peter my geule the expr.
Vintage amp

UTILIZATION

Amp plug and play and you plug the gualisation because we play is very simple, we get a warm quickly WHETHER IN CLEAN IN THAT DISTO.

Many of the guitar amp dtest
Why? the rponse is simple ...
This amp has arrived around the 90's, we can say that it remains in the shadow of his great ERRF the JCM800 (the must amps) outside the contrary prdcesseur

the jcm 900 has more than the jcm 800 2203

- An effect loop (through a single boss in GE7 can bring out a solo for everyone in the room to hear the (THERE IS nothing more annoying than to hear a solo person) unless you have a good sound engineer who can increase the volume of your JCM800 when solo.
- Then impossible to switch to clean with a JCM800 distortion you need 2 amps parrella a distortion in the other clean
I've never seen a marshall compaptible also with effects pedals (chorus, flanger, ..)
3 for me here BMOL the jcm 800 I have left in the craw even if I like it a lot.

SOUNDS

THE CLEAN: j I t trs surprised when I heard the clean effect of this amp is a marshall c and everyone knows that a clean marshall c is not the top, and here c is square the reverse.
Hot-
Lgrement-crunchy and sweet faith (it is felt that c is a good old marshall)
It clean this amp is easily detectable in the studio or on stage (c is not just a clean that goes unnoticed in the music) it hangs the ears and quickly becomes a must

THE DISTO: Can not be a distortion of such covers all styles of hard rock (Velvet Revolver, the white snake ,...) gnral rock (Led Zepp, ACDC, .. .) and Strange to the blues (hendrix to make it really stunning and I know what I mean that I have been testing a plexi). You can do anything with this distortion.

Disto-intoxicating even low volume (the marshall has recognized a 10km radius)
more you push, the better.
To make a solo-c is 7 th Heaven C is the sound incoutournable

I would stick to a good 10 derrire

OVERALL OPINION

Ben veiled j uses this amp for the past 2 years the ratio quality price is standard.
I recommend this amp to any fan of ROCK N ROLL.

if I should redo the choice c is not hsitation I buy the JCM900. (c 500euro for 100w lamp is really affordable)

What is my most most about this amp is that it c an he has his own, that n is not copied by modlisation amps. It is unique we like it or not.

J'abrève, much has already were saying ....
Amp complete without adding too much, just enough, no effect but now have built a multi-effects pedals or all ....
The combo is + for the 2 HP ...

UTILIZATION

The sound is very powerful, even too much for those who want to play at home or in a small room.
The settings are good but not super accurate do not hesitate to turn the knobs to find the desired sound!

SOUNDS

I put that opinion to challenge what I've read before.
With a good multi-effects, one finds what one seeks, above all the power and the lamps.
I think this amp is designed to sound crunchy blues rock style 70 for the metal and the aggressive style you need to boost it all with good pedal like Boss OD1 or ToneLab ....
CAUTION: 2 HP G12T75 are, why put us marshall stuff crap??
HP is really basic, very mediocre or bad opinion of my fellow guitarists ...
the 2nd default should not be overlooked: the receiver is open at the back, just across a small plate!
I changed it all myself and I assure you that the sound of departure to now really has nothing to do, go to bed with your VOX AC 30 and mesa boogie they are worth a fortune! !!!!!!!!!!
Please note that I will write:
Turn the 2 G12t75, strictly speaking, made with a 2X12 cabinet, like that no loss or regret, and easy to do with good wood!
Include two or marshall vintage 30 goldblack, a must for this amp, I swear! (Be careful to respect the impedance!)
Close behind at the Hp 2 to avoid the sound emerges from the back and have more serious, the major problem of the JCM is the lack of bass and warmth.
The difference in sound is spectacular, I should work at research department at Marshall, what fuckers!!
Just small changes, 2 vintage 30 and a wooden plate (set of solid, not the chipboard!) And presto, I have an amp that smashes everything, for about 150 euros opportunities for HP ...

OVERALL OPINION

Amp very powerful, is largely a big stage without being transplanted (well I have not in and groovetube sovtec)
With a change in HP which is mandatory if you do not want to put a kick in the amp after two rehearsals, the sound is really rock and roll, and if you have a good SG or les paul of the seventies, c 'happiness is guaranteed!
Do not buy more expensive amp, it is useless to me that you are rich!!

2X 100W tube amp hp 12 'both channels one equalization.
Conventional settings, reverb.

UTILIZATION

Amp easy to use test ... on stage is something else!
- Gets it easy to sound good?
I've never had as bad with this amp sound. clear sound fair / horrible distortion or distortion fair / clear awful.
the manual? the pots are ineffective at 80 p100.

SOUNDS

Amp to play rock.
I used it with Tele, Start, SG, LP, without special effects.
For sound, I prefer to say anything ...

OVERALL OPINION

I bought this at its output 4102, a few years ago!
HP dropped me a full concert in Montpellier Rocksore shortly after!
Tired of crappy sound I was driving this thing with a Peavey preamp was already ... It's the best amp that I like least of all those I've played ... and I ' got in a lot, good and less good (Novanex, Standel, Garren, Sunn, E, KMD, Peavey, Roland, Fender, Acoustic, Boogie, Marshall ...)
I ended up exchanging against a JCM 900 50W 1X12 (much better) and then against a JCM 800 (even better).
This amp almost disgust me the Marshalls!
I came across perhaps a bad model, who knows ...

Tube amp.
2 x 100w tec ... all is said and peer underneath!
A single guitar input on the front, but a multitude back.
All it takes nothing less.
Reverb on each channel.

UTILIZATION

Config ultra simple.
The EQ is practically nil, but still allows to approach the desired sound.
It will still play with a nessaire upstream equalization.
Downloadable on the site, but honestly ... not very useful.
This amp is switchable in 2 * 50 watts.

SOUNDS

Strangely clear channel for a clear and incisive Marshall, I find it very successful!

Distortion channel: Amp cut for AC / DC, Guns and others can freely develop in the blues / crunch.
Rhythm or solo, you can go, even at low volume
The sound of the lights is really something else!
Not for the metal!

OVERALL OPINION

Used for 1 month is a great value amp:
Yes, I bought 50 Euros, (yes 50 no shell!) In a cosmetic condition almost new, but apart from this parameter, I try to remain objective in my opinion ...
This amp is usually around 450 Euros in OCCAZ, and for that price, I think there are ways to beat.

The biggest problem: Marshall knobs that crack, but it is very simple and inexpensive to change, so, forgiven!
I agree with the guys from under that HP is poor, but for my part I do not play at low volume.

In short, if you see this amp to 300 Euros or less, go for it because it's tough.

All lamp 50 watts or 100 watts thanks to the switch
-Loop effects
-2 Channels, 2 reverbs

UTILIZATION

trs simple configuration but we must push for a sound and sends 100 watts all-tube ....
trs legalization effective ... (it's an amp for blues, rock, rock and big ).... the neometal who cares ...

SOUNDS

His thundering clean and excellent
Overdrive nice if the volume grows well
Reverb .... no more ...
It sounds good with pedals trs overdrive / distortion
A J & H for myself with microphones Telecasters single or double ...
Let's rock!
With the cabinet in 1922 the sound of a closed cabinet shuffled form a nice combo with the sound of the open ...
The HP are good .... the neometal who cares ...

OVERALL OPINION

Amp manufactured more .... I do not resell.
I Retube with GT and I do not regret it ...

said

UTILIZATION

This gives a sound immediately.

SOUNDS

This is an amp with overdrive worthy of 70's rock; If someone criticizes when he plays metal is that it has understood nothing.
The sound is vintage and unlike the JCM 2000, he left. I play for the compounds based on hard-Rock'n'roll 70's and also to Elvis and Eddie Cochrane. The clear sound with a delay style 80's that makes him serious.
I put the Mediums to 1 / 4 because I want to keep her very Marshall, and treble and bass at 2 o'clock. The presence of the nearly full and my microphone guitar quite low compared to the strings (I'm not talking about the guitar mic volume is at its bottom)

I have a great sound but everyone loves hers and my sound surely displease others.
At low volume it gives it when the children are asleep and I want to play at 1 am without waking anyone.
A background ,....... it will tjrs!

In short, I love, love.

As soon as I open the sub sub popoche I buy the Marshall Plexi SLP 1959 but I will keep the JCM900 on hand anyway.

OVERALL OPINION

I recently got my marks already hey, hey!

Only downside: no EQ 2 channels of independent

(Originally written by BigB/translated from Audiofanzine FR)
100-watt tube amp (four EL34 in the first series, four 5881 starting from 1993). Switchable 50-watt operation (pentode /triode), two channels (normal and lead) and two Celestion 12" G12T75 speakers.

Two inputs (hi and low), FX loop, direct outs with and without speaker simulation (for recording), two 4/8/16 ohm switchable speaker outputs, footswicth connector (for channel selection and reverb on/off).

Settings: independent gain, master, reverb in each channel, shared EQ (low, mid, high, presence).

Well equipped amp (for a Marshall) considering when it came out, although only one EQ section for both channels is a pity. It's ok for me but it limits the sound possibilities.

An overall master control would have been nice to avoid having to deal with the volume of two channels once you found the right balance.

UTILIZATION

Settings couldn't be easier (especially considering that the EQ section is not very effective). There are only two things that must be understood:

1/ Play with enough volume (min. 4 but preferably 5 or 6). Disadvantage: with such settings even a loud drummer won't be able to hear his drums (it's a 100-watt tube amp with two high-efficiency speakers!). Even the 50 watt operation is jaw-dropping! Based on this I would now buy its small brother (4502 = 50/25 watts), which is more than enough.

The following comments are valid if you set a good volume and wait until the tubes have warmed up!

2/ Regarding the EQ section, I boost the mids and presence and adjust the highs and lows depending on the guitar.

SOUNDS

The normal channel produces a very good clean sound (which is surprising because it's not Marshall's specialty): round, warm and accurate. With higher gain settings you get a typical Marshall crunch, although it sounds a bit harder and with less lows than on older amps (it probably has to do with the open speaker cabinet).

Lead channel... You either like it or not! The sound character is the same as with the normal channel but overdriven. An internal overdrive circuitry (like the Tube Screamer TS9) increases the saturation. I personally like this sound, but it's not the typical vintage Marshall sound (the JCM900 was clearly conceived as a modern amp) nor the modern heavy metal sound. With high gain settings the sound becomes fuzzy and the precision decreases. If you set the gain below the halfway mark you get a nice distortion sound and don't need to buy a Tube Screamer.

It applies the same as for the normal channel: the sound is a bit harder and with less lows than on old Marshall amps. In both cases the problem comes from the speaker response and the open speaker cabinet. If you connect the amp to a 4 x 12" cabinet with Greenback speakers you can almost get the sound of old Marshall amps. If you can't do this, a good EQ in the FX loop will help you change the frequency response.

The reverb effect has only an average quality: Fender Twin fans shouldn't expect a thing! But it provides sound a natural deepness.

So it's neither a typical vintage Marshall nor a monster amp for shredders! It's just an excellent amp for rock (I don't care about what purists say[1]) and it would be even better with softer sounding speakers and a more effective EQ.

[1] or unlucky users who bought a faulty model...

OVERALL OPINION

I bought it new in 1993. At that time I played in a grunge, fusion and old-school hard rock band and it was the best partner for my Vox Custom 24, which has a very fat sound (I tested dozens of amps in the same price range but they had either clean sounds and slight crunch sounds that were too sharp or distortion sounds and lead sounds that were too compressed. I never had any problems to stand out in a mix with this combination (both live and in the studio).

I now play either blues or rock and I'm still satisfied with this amp, even if I'd like to replace the G12T75 speakers with Greenback speakers... I only use the 50 watt operation so the power handling of the Greenback speakers should be enough and they would allow me to use higher master settings because of their lower efficiency.

As I mentioned above, I regret not having bought its small brother (4502) that shares the same features with a lower output power (which is monstrous on my amp). Up to now this amp has been perfectly reliable (except for the potentiometers, which are a well-known Marshall defect). I still like both clean and distortion modes because, unlike many other Marshall amps, the clean channel sounds really nice.