Marshall 4501 JCM900 Dual Reverb [1990-1999]
Marshall 4501 JCM900 Dual Reverb [1990-1999]

4501 JCM900 Dual Reverb [1990-1999], Tube Combo Guitar Amp from Marshall in the JCM900 series.

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iamqman 07/10/2011

Marshall 4501 JCM900 Dual Reverb [1990-1999] : iamqman's user review

« Can of bees »

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This amp is terrible! I can't believe this thing has tubes in it. I thought at first I was listening to some made in China solid state amp that cost $150. I can't believe this thing has tubes. Not only was the tone flat and sounded like a can of bees, I thought that the thing was going to start smoking.

These amps were I suppose to be a hot rodded Marshall amp. Since most Marshall s were modded to high gain standards they decided to do this to rod version of the JCM800 and call it 900. The head version actually is tolerable but this ting is just trash.



* 50 or 100 Watts of power
* Two (50 watts) or Four (100 watts) EL34′s
* Three 12AX7′s
* Effects Loop
* Two independent volume controls (footswitchable)
* Direct Out
* Two speaker hookups
* Switchable power (50/25 Watts or 100/50 Watts)


* Presence
* Bass
* Mids
* Treble
* Master Volume A/B
* Gain Sensitivity
* Preamp Volume


I have heard this amp with multiple guitars and every time is sounds like trash. I can't believe this was a good idea for the folks at Marshal to think people would like this. Well we all know that it wasn't a hit and Marshall tries to scrub it self of this tragedy. You wolud see a reissue of this amp I can guaranty that.

What ever guitar you use try something with a humbucker installed pickup. Otherwise this thing won't carry any beef. The distortion is nasally and buzzy. I actually sounds like a can of bees buzzing around. I couldn't stand listening to it longer than I had too. The tone as just flat out terrible and processed sounding. It sounded like a solid state amp.


This amp is a big miss for me. I wouldn't pick this amp up if you paid me. No idea what the going rate for these are and frankly don't care either. These amps need to be torched and put out of our misery.

I wouldn't recommend this amp to anyone. If you want a hot rodded MArshall tone and don't want to spend more than a $1000 then get a used Marshall JCm2000 DSL 100. You can pick those up in the classifieds all day for about $695. Or even get a used JCm 800 for a little more and slap a Boss SD-1 in front and you'll be fine.