Product Comparison: Marshall JCM800 2203X vs Marshall JCM900 4100

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General Specifications
About the Product
The art of the JCM800TM is its simplicity. Used by artists around the world, this amp continues to be one of our greatest. Oozing rock status, you can effortlessly detect its distinctive 100w roar. The first of our amps to feature a master volume for you to control your sound. We have added in a series FX loop, simple and effective.
This two channel dual reverb 100w powerhouse will make you stand out on stage. A stylish reissue, the JCM900 4100TM is the evolution of the JCM800 adding another channel, two reverb options and two gain features. An amp built to go on the road and be on the stage with a sound loud enough to fill stadiums. This reissue seamlessly replicates the original with an added in series FX loop.
Key Specs
Power Output
100 watts
100 watts
Number Of Channels
Controls Included
Presence, Bass, Middle, Treble, Master volume, Preamp volume
Channel B (volume, reverb), channel A (volume, reverb), Presence, Bass, Middle, Treble, Channel B lead gain, Channel A gain
Footswitch Included
What customers say about "Key Specs"
Marshall JCM800 2203X 100W Tube Head
  • Exceedingly loud. The Master/Pre Amp allows me to dial in any guitar to near equal gain regardless of pickups/guitar etc. Very clean when clean and monster gain when wide open.
  • Sounds best when pushed hard, A little thin at practice level, but take it to the stage and crank it up and it's just wonderful.
  • The effects line works perfectly and the JCM really does accept all pedals very well.
  • Very simple controls, just EQ, pre-amp volume (which controls gain) and Master volume (which controls loudness). Adds an FX Loop, which the originals didn't have.
  • With the pre amp on about 2, your clean tone sounds like it is vibrating a metal tray covered in broken glass, just beautiful crisp and a little raw.
Marshall JCM900 4100 100W 2-Channel Tube Head
  • The heavy metal tone, and the clean tone out of this amp is KILLER!!!... The heavy tone on this is great alone, but if you want even more atttack, a Boss disto pedal with the disto on 1 and level about half puts this thing over the top.
  • Well, I own a couple of those, and IMHO, the JCM 900 sounds better.
  • I have an original from the '90s. I absolutely love this amp. It's an absolute beast! Built like a tank and has that Marshall tone for days! The clean tones are nice and the reverb is great
  • I was able to quickly dial in a great tone and it made my Flying V sing, it sounded AWESOME!
  • Especially, the clean channel and reverb sounds very nice. With the addition of a 50 power stage option, this amp offers the flexibility for playing smaller venues.
Size & Weight
12.4 in.
12.2 in.
29.1 in.
29.1 in.
8.3 in.
8.3 in.
45 lbs.
41 lbs.
Tube Head
Tube Head
Compatible With Footswitch
PEDL-91004, 2-Way Footswitch
Carry Handle(s)
2 (1 x high, 1 x low)
1/4" (instrument)
2 x 1/4" jack speaker outputs
3 x 1/4" jack speaker outputs
Preamp valves 2 x ECC83, 1 x ECC83, Power amp valves 4 x EL34, selectable 16Ω/ 8Ω / 4Ω load
Preamp valves 2 x ECC83, 1 x ECC83, Power amp valves 4 x 5881, selectable 16Ω/ 8Ω / 4Ω load, Two footswitchable channels
What customers say about "Features"
Marshall JCM800 2203X 100W Tube Head
  • Very handy is the efx loop, since I have still an EQ sit, the range by 2.5 kHz narrow-band dampened and somewhat widerbandiger the range around 125 Hz again strengthened.
  • This amp is a beast. Loud and tone monster, plug and start rocking without any bullshit
  • I simply love this amp a whole lot, goes from bluesy cleans all the way to 80's Metal. This amp is brutal and unforgiving, you need to learn how to play with the amp, because you hear every single mistake you make.
  • holy loud. this amp is sweet for anything from blues to hareder classic rock. in order to get into the heavier end of music you have to turn the pre-amp gain all the way up.
  • This is one of the most versatile amps i have ever owned. It can nail anything from a hard crunch tone to a soft blues sound. It has a great response to the guitars volume.
Marshall JCM900 4100 100W 2-Channel Tube Head
  • I tell people the Marshall JCM 900 4100 is the single best sounding amp you can buy! and it is one of the easiest to set up, use, and get your tone.
  • Hendrix thing you need them, but the amp by its self is awesome I play les pauls strats and wolfgangs.each guitar sounds amazing.
  • That JCM900 saved the evening and I have to say that it sounded better than the JCM800 for the venue we were playing at (of course I mean when the 800 was working).
  • I have an original JCM 900 100W half stack from 20 years ago and it's still cranking like new.Serious bottom with this amp and there's no substitute for it's tone and sustain, It blows other amps right off the stage.
  • I find the EQ controls are very responsive, and the reverb is pretty variable for an amp as well.
Warranty / Certifications
Manufacturer Warranty
5 year(s)
5 year(s)
Other Information

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