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  • Marshall JMP-1

    Marshall JMP-1 - " very good but fragile hair"
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    06/22/13

    all the lamps at all good ;) There are 4 channels clean/crunch/disto1/disto2. UTILIZATION super simple use on pressing the buttons, turn the knob. Not need the manual. The sound depends on the guitar, the poweramp and cab but overall it sou…

  • Marshall JMP-1

    Marshall JMP-1 - " Good sound"
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    06/21/13

    Pre amp lamp (I do not have the characteristics in mind ... Saturated two channels and two clear. Most is stored in the 99 memory settings! We can get more sounds and switch from one to another via a pedal noon example. UTILIZATION Setup is …

  • Marshall JMP-1

    Marshall JMP-1 - " Does a very good taf!"
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    06/21/13

    Preamp with 2 lamps. 4 "channels", effects loop, stereo output jacks midi out and thru. UTILIZATION See overall opinion SOUNDS See overall opinion OVERALL OPINION So I use this preamp for 3 years. At first I had taken as a supplement to…

  • Marshall JMP-1

    Marshall JMP-1 - " Done very well his taf !!!"
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    06/21/13

    Preamp with 2 lamps. 4 "channels", effects loop, exit stro taken midi out and thru. USE See global opinion SONORITS See global opinion NOTICE GLOBAL So I use this preamp for 3 years. At first I had taken her for my complment JSX.…

  • Marshall JMP-1

    Marshall JMP-1 - " super preamp"
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    06/21/13

    Hybrid lamp / transistor, the best two worlds, fully controllable by noon. UTILIZATION Setup is very easy, you get quickly and easily a great sound. SOUNDS the range is quite wide, from metal to blues. on the other hand, for clean sounds we r…

  • Marshall JMP-1

    Marshall JMP-1 - " THE marshall with his lunch"
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    06/20/13

    preamp choice of four channels two cleans two overdrive. adjusting bass medium treble presence and gain volume (all very efficient) no effect but an insertion loop very well designed (maximum 12 otherwise it is set in parallel. UTILIZATION not…

  • Rocktron Voodu Valve

    Rocktron Voodu Valve - " very effective"
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    12/21/12

    we know already nothing to add UTILIZATION configuration: 1st First it is far from the boss or digitech ergonomics, with a little patience and approx brain goes badly manual: yes in French available on the net can be used for ca picky sett…

  • Marshall JMP-1

    Marshall JMP-1 - " The sound "Marshall"!"
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    07/19/12

    Tube preamp (2 12AX7s) 1U rack ... controllable via MIDI! I will not repeat what was said above ... this is not the purpose of my review! UTILIZATION Configuration quite simple ... it was all inclusive in 5 minutes! The manual is useful sinc…

  • Rocktron Gainiac

    Rocktron Gainiac - " A GOOD PREAMP"
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    07/01/10

    CLEAN AND TRANSISTOR DISTO LAMP RACK 12XA7 HEFTY UTILIZATION NO NEED FOR MANUAL -2 BUTTONS FOR THE CLEAN -5 BUTTONS FOR THE DISTO ATTENTION TO HER! WELL TAKE THE TIME AND ARE VERY SENSITIVE Knob BUT WHEN IT PULLED GOOD OLD HARD ROCK ME 80-90 …

  • Marshall JMP-1

    Marshall JMP-1 - Oli_34160's review
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    01/06/10

    For specifications and review the original preamp, see below. On mine, I made the change, Dr. Boost (chgt condos on the audio line - sixty, ceramic films cons - chgts 15v regulators, amplifiers chgts Ops - 10 in all, the OPA2132 and 4132 to replace T…