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"The JVM410, I have three clones of each other. These are modified by Santiago Alvarez, the Head Engineer for Marshall - also a really good guitar player. He's been working on these things for me for over a year. We've kept the basic design of the 410s, which is four channels and three modes for each channel, so you do get a lot of flexibility. Any working guitarist out there is going to love the fact that it's pretty much got the history of Marshall tones in one head. I'm using about four different settings right now. So I'm using a clean channel, one for a sort of overdriven 800 tone, then two settings in an overdrive channel. My gig is mainly playing melodies and solos full time, so I don't do a whole lot of rhythm work during the show. What Santiago is able to do with the existing 410 is get rid of a lot of the inherent compression that was a little more popular a couple of years ago. So now it's an ultra punchy, super dynamic amplifier. We got it way more quiet, and we got rid of the reverbs and we put it four noise gates - one for each channel. We reshaped the resonance and the presence controls so that they would be a lot more friendly for me. Basically I didn't want the presence to be so harsh and I wanted the resonance to be a little more flexible, let's say, not so overwhelming in the 100-hertz area. Other than that, I'm using just one head during the show and two cabinets. We keep a half step back for guests: John Petrucci was playing through that one the other night in New York City. A spare head is always available just in case something gets finicky with this one. All the heads go into that to keep the power regulated. For the tubes, I don't think we change anything about them, they're EL34s 12AX7s. I don't think in the last twelve months we ever tried anything else, like 6L6s or KT80s. We've kept the EL34s for the whole thing."
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