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Marshall JVM410H 100-Watt All-Valve Head
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This is Marshall's flagship 100-Watt All-Valve amplifier head.
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Searched Marshall JVM410H 100-Watt All-Valve Head in Reviews
Not my breed of amp 
| Sound |
Unlike the previous reviewer I did not find my sound with this beast.
I tested the amp for 2 days with the following guitars: JS1200, 7vwh, 77vbk, Les Paul Std, Stratocaster American Std, G&L Telecaster.
While I agree that the orange sounds are the most usable, as soon as you add crunch or even high gain it gets to muddy for my taste. (Did use the Marshall 4x12 and a Mesa Rec 4x12 and a Custom 2x12 with Jensen)
Also this amp adds A LOT of noise. With high gain sounds compared to my other tube heads it goes very noisy even when the guitar volume is down to zero.
The clean sounds are also very un-Marshallish and do never get in any direction that I would define useful.
I compared it also to a vintage Marshall and it did not even come close to that sounds.
I my opinion this amp is very unlike a Marshall amp and sounds very muddy with gain with low quality clean sounds.
I see that many people tend to like this amp and would not rule out that I got a lemmon here for testing. But I can only judge the product I got for testing and this unit was very poor.
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| Reliability |
Had it only for 2 days, but built was quite OK.
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| Customer Support |
Marshall support tends to be mediocre.
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| Liked about it |
- Built of the unit looked good
- Looks
- Lots of choices
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| Didn't like |
- Sounds
- Cleans
- Lots of Noise
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| Overall satisfaction: |
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1.0 |
 By Tank Oct 27, 2009
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Quite possibly the best non-boutique all-in-one am
| Sound |
Anyone who reads my reviews knows that I have a wide variety of guitars--my main guitars are Ibanez RGs with Dimarzio Super 3 Bridge and various middle/neck combinations. This is basically every Marshall head sound you've ever heard in a single MIDI-switchable head. There are four channels that have three modes each, giving a total of twelve different sounds. Each channel has a green, orange, and red mode. The green modes are
characteristically the brighter, cleaner modes. The red modes are the highest gain and contain the most bass. The orange modes are in-between and are what I find to be the most useable of the sounds. Nice mid push with compression and tons of crunch. Pure Marshall here... The factory footswitch is extremely flexible, although I don't use it because I use the on-board MIDI to control the amp, which is great--you can switch channels, control the effects loop, turn reverb on/off, and switch master volumes all without tap-dancing. I've heard
others say that the OD2 channel sounds a little "transistor-like" at higher volumes, but I haven't experienced this. I changed out all the ECC83 valves with Mullard re-issue valves and it brought out much more of the "Marshall-esque" character of the amp. The green mode on the clean channel takes after the Hughes & Kettner TriAmp MK II and works in pure Class A mode with only the Volume knob working--the higher you turn it, the
more it breaks up. This amp produces everything from crystal-clean to all-out punishing distortion on the OD2/Red mode. If you can't get a good sound out of this amp, you may want to consider playing drums... Extra Presence and Resonance controls allow you to further fine-tune your sound at the power stage. Effects loop settings in/out are remembered with each channel's settings as well.
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| Reliability |
Never had a problem with it--rock-solid. I would gig it without a backup and I've seen professionals use them on-stage.
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| Customer Support |
Never had to deal with Marshall customer support.
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| Liked about it |
MIDI-switchable!
12 different tonal possibilities
Presence and Resonance controls for further tone-shaping at the power tube stage.
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| Didn't like |
Stock tubes don't sound as good as Mullard re-issues.
Effects loop is difficult to configure between parallel/series mode--not very well-explained.
Tons of after-market mods may imply that Marshall cut corners on components. You be the judge.
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| Overall satisfaction: |
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5.0 |
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