Marshall 4102 JCM900 Dual Reverb [1990-1999]
Marshall 4102 JCM900 Dual Reverb [1990-1999]

4102 JCM900 Dual Reverb [1990-1999], Tube Combo Guitar Amp from Marshall in the JCM900 series.

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lagrelle 08/09/2003

Marshall 4102 JCM900 Dual Reverb [1990-1999] : lagrelle's user review


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All Tube Amp and 3xECC83 4x12AX7 to 100 watts of power.
2 channels clean and lead with separate controls for volume and gain but reverb and EQUAL common, which is very annoying.
At the rear output 2 hp reducer power 50w and adjustable effects loop.
Classqiue short but really bad point for the equalization policy.
The footswitch is reduced to the minimum channel and reverb


Frankly, no need to turn time for a sound, we choose the channel, EQ, you push the gain and go. From this point of view, the use is simple


While there is no doubt the big disappointment. The clean channel is quite nice looking por a clear round and warm, but it's still good the Marshall sound is so soft and does not shine. However the lead channel is a fiasco: While playing for the crunchy AC / DC Bryan Adams and so on, it is ideal but if not, it's not worth considering to play the metal and even with ordinary hard. Even fitted with groove tubes, the amp does not issue large saturation, and especially the EQ, in addition to being common to both channels, is very inefficient and turn the knobs has virtually no influence. Yellow also spring reverb too fragile loose as soon as we carry the amp for a gig or rept '. The best way to play is hard to play clean channel with a distal loop, but then you lose the lights!!
Last thing: but where are the 100 watts, this amp has no fishing!?! Blame the preamp that does not have enough output level. Used in power amp via the loop, with 530 in Engl preamp, it has more noise.


I bought this amp on Ebay in August 2002 because it would be a misery, with € 450 Powerbrake. I kept only six months because it did not please me at all. The preamp is downright soft knee with many defects (equal joint reverb fragile, its lead not powerful at all, low output level) and finally with only a clear Hon. Power section remains, honest when you plug a preamp other in the "return" of the loop, but my power tubes (groove tubes yet) slammed 2 times in six months, so as disappointment on this side. If it again, I do not redeem it, even for € 150.
In conclusion no surprise that this amp does not have a big side saw its defects. It should, however, looking for a typical lamp's rock (not metal or hard) and is not afraid to break the back with (the beast and his two hp weigh close to 35kg).