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RedMikeLine

Marshall JMP-1 Tube MIDI Guitar Preamp



Sound Quality

I use this with a Les Paul Classic, 9200 Marshall Power Amp, Alesis Comp/Gate, BBE Sonic Maximizer, and (2) 4x12 GT-75T Cabs. When I first got the thing,(4 years ago) I didn't have the Gate or the Maximizer. I bought it on faith because I got the power amp real cheap and needed a preamp to start using it. I figured I should get a marshall to go with my marshall. I didn't even try it out. I brought it to rehearsal, plugged it in, and decided in about twenty minutes that this thing is the worst thing I ever heard. I was using the factory presets. Whoever came up with the factory presets should be fired. But I don't give up. I worked with this thing hardcore trying to come up with a sound I liked. It took me months, but I kept getting closer and closer to what I wanted. When I eventually threw in the Alesis unit and the Maximizer I had it. In my opinion, I haven't come across anyone elses rig that sounds as good as mine for the type of music I play (metal type stuff, a lot of palm muting). A lot of people make the mistake of using too much gain. It just gets to fuzzy and muddy. Sound guys have always complimented the sound I got. As far other applications of this unit: Clean: I think it sounds pretty good, not the best ever, I haven't been able to get a real glassy sound from it. But maybe its my Les Paul. Leads: You have to use OD2 and push it to get smooth lead distortion, but its in there. Punchy OD: This is what I use it for. I think its perfect. You need to use OD1 and crank the gain or use OD2 with 60% to 75% gain. When the power amp is cranked up it'll put you in the floor. I give it a 9 because no amp ever invented can match the sound you truly want. But this comes the closest for me.

Reliability/Durability

I've had it for four years, played probably 175 shows with it and had no trouble. But, just the other day I was fooling around with it and found out my right stereo output didn't work. I don't wkow when it happened because I never use it. But this might be a big issue for someone who uses stereo outputs from their preamp.

General Comments

I'd like to credit this preamp with being the best ever, but I thinks its the combination of the surrounding gear, and just working with it relentlessly until you get what you want from it. I've also recently used a Peavey 5150 II with basically the same gear surrounding it (except the Marshall power amp) and worked with it for a while and got more or less the same sound from it as my Marshall setup. It took me months with the marshall and days with the Peavey. Hopefully thats because I know what I'm looking for now.




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