All user reviews of 4/5 for the Marshall 4100 JCM900 Dual Reverb [1990-1999] [2003 - ? ]

I brought this unit about 6 years ago and have still got it .Being an in experience guitarist at the time I chose the unit because of its name and reputation. I havent regret it, except for maybe a few short falls. I paid $1100 Australian dollars for it.

I like the distortion voice on this amp with its ability to give you a modern tube amp sound.
I also like its ability to give you 2 choices a clean and distortion sound at the stomp of a switch.

The thing that i dislike about the unit is the clean sound which tends to sound a bit "tinny" on its own. However, in saying this the clean sound can be beefed up by adding different effects with it i.e a tube screamer.

During relatively loud volumes my amp has a rattle or buzzing sound and im buggered if i can find out where it is comming from. I took it to an Marshall amp specialist and even he couldnt find where the rattle is coming from. The rattle can be only heard when Im close to the amp, and hence, it hardly bothers me.

My Marshall has been good to me and has never broken down after 6 years of in and out of boots, tipping over, kicking and dropping once from 1 metre. It has a distortion sound with balls and a clean sound with none which can be overcome with effects. If your thinking about buying one test the amp to make sure it doesnt rattle at a good volume.

This review was originally published on http://www.musicgearreview.com

All lamp
100 w to 300w head and 4x12 cabinet for celestion.
Between a jack (input), and between effects return, and direct recording output and finally jack pdalier rverb and distortion.
I well liked one second between two guitars to play the day of beef!

UTILIZATION

A simple config, except for those who do not know much about the 4, 8 or 16 ohms. The choice is nevertheless important for trs connection of the head to the cabinet. Stereo, mono, short ohms you get lost a little beginners and the more you risk altrer svrement sound, not to mention the stuff that can abmer .
The right sound? it's hard to talk about that gots both guitarists are Different. But for my part, I've never reaches the sound I'm looking for for years, but it is I who should be too demanding.
When purchasing the amp in the store, no manual I t provided by the receipt against yes!

SOUNDS

Not suitable for my type of music today. I am a rhythm guitarist with soul. on the other hand if you rock, or any other music mtal o you need the big sound ... this is for you!

I play a Stratocaster and a Gibson Les Paul. No need to tell you that Gibson + = JCM TNT (boom) attention ears. Finally if your angry with your neighbor, go ahead!

His fat, crunch, big sound. This amp sounds like a lanc drangster full speed. Difficult to mount the volume + 4. APRS good, you and your major vaccine ... If you like adventure ...

I shuffled the nanmoins gibson crunch and its pretty clear but the amp bluesy solo. the Rhythmic sharp and clear with this monster is a bit like driving a 38 ton 120 km / h on smaller roads Corsica ... not what.

OVERALL OPINION

I bought this amp in 95 or 96.
I dtest weight and size, f that in j'roule Nissan micra.
For love against his mouth, his look is fabulous and crazy people who like beautiful things.
My Previous amp silent is a Fender Champ 25
Too expensive to buy today, but is not the legends of rock? In terms of the quality of fabication is the hand-stitched. Trs is well finished, solid and Designed for exceptional Manir. It is a work of art.

If I had to repeat the purchase, I do not think that I run once more in the freelance beauty and big amp that everyone rve have. I rflchirais more about the style of music I play and the sound I expected.

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)

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.