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The amp is equipped with two separate controls for the onboard digital reverb. One controls the reverb level on the Overdrive channel, and the other controls it on the Clean/ Crunch channel. This is a pretty good idea because there are many instances when differing amounts of reverb are needed.
And speaking of control: all reverb, effects loop and master volume settings are stored in memory after each use. This means that if you have dialed in a pounding, heavy rhythm tone with no reverb on the orange LED setting on the Overdrive channel, it will be remembered when you leave and return to that channel. Setting up a lead tone elsewhere, such as on the red LED Overdrive channel with reverb, and perhaps a delay in the effects loop, will also be remembered. You can now toggle back and forth between the settings. Unfortunately, it will only store reverb, effects loop, and master volume settings, not changes to the gain and tone settings. However, having a total of six settings available (with three-per-channel availability) makes many different tone settings possible.
The effect loop is also very versatile; it can be configured either in series or parallel. When using effects such as delay, it’s cool to be able to blend in the echoes without actually interrupting the signal and degrading it by passing the whole sound through the pedal. And there’s no need for true bypass; when the delay is no longer needed, just turn off the loop! This is an example of the parallel loop. If for some reason you wanted the whole tone to be changed by a device in the loop such as an equalizer, the series loop directs the whole thing through the loop. This is also the setting that you would use if you were accessing the power amp for use with an external preamp such as a JMP-1.
The back panel features include a MIDI-thru/ MIDI-in jack combination, as well as an XLR speaker-emulated line out and a quarter-inch footswitch jack. Five speaker output jacks allow for the amp to be used with any type of speaker load you may wish to use. The two types of effect loops have their own separate jacks for send and return, and the parallel loop has a level matching switch with mix knob. A bypass switch is located near the series loop jacks. The effect loop on/off switch can be accessed through the front panel as well, and as I mentioned earlier, can be programmed into the settings selected on any given channel.
The Final Mojo
The Marshall JVM 210C is a powerful package. It would only make a small footprint on the stage, but it would be able to handle about any size venue. It’s fairly heavy—nearly 60 lbs—but its tone more than makes up for the weight. It has side handles, which do help with the weight. Because of the speaker selection it seems to have a fairly convincing big-speaker, almost 4x12-type tonality. There would certainly be gigs when a 4x12 would be better (such as outdoor shows) but for most club dates, this would be more than adequate. The reverb is transparent and does not conflict with the tone of the amp (as some do). Even on its highest gain settings I was able to clean it up very nicely using the guitar’s volume control. The amp responded equally well to single coil and double coil pickups and produced some really nice Strat notch tones on the JTM-45 settings.
you are looking for a reliable, powerful, versatile stage amp for clubs to moderately big venues.
you are looking for something lighter in weight.
MSRP $3199 Street $2300 - Marshall Amplification - marshallamps.com