All user reviews of 3/5 for the Marshall JMP-1

Two lamps preamp for two clean and two types of overdrive which meet soon enough. We toured the sounds available in less than an hour.
Connectors: entrance facade, 2 outputs on the back for sending in the power amp, an effects loop (a send and return for 2 stereo effects), connection noon to manage other devices, Stereo output with HP emulation, switch +4 / -20 dB.
A headphone facade.

UTILIZATION

Very intuitive, each parameter is adjustable via a single knob (endless) settings from -6 to 6 for low, mid, high, 0-20 to gain and volume, the setting of the selected parameter is shown in red.

Manual, dispensable, can be used for parmétrage noon or recording settings (100 presets ... I doubt the relevance of so many when we quickly turns round with the settings, probably for use with 2 or 3 other midi devices whose settings would complement?).

Sounds clear lack of definition, treble bite before cristalins, or more precisely, the adjustment is made on a frequency to be loved. It takes effect in the loop for pleasure, otherwise the record is a little ungrateful.
Not possible crunch.

OD can be interesting if you like that kind of color, but you can not get out too. It is quickly compressed from one ascends the gain.

SOUNDS

Long used with different rack effects (Digitech 2120 Alesis Quadraverb, also tried with a Fractal Audio) plugged into an amp and Mesa Boogie 2:50 (which is much more convincing).

The effects racks can rework the EQ to find other colors, but trying too hard to distort the original sound is still loses definition. Better get used to really sound very cete medium and a little muddy. A bunch of different guitars (Gibson Les Paul Standard 1990 Strat pickups Duesenberg, ESP ...), the sound is very distinctive.

I mainly used in metal / rock / prog context, with a rather medium need (that's good). For brit rock it will not work (well, you can do everything of course, but good). For death metal that can suit even if the precise time they seek treble side.

OVERALL OPINION

I kept almost ten years, in parallel with other amps. It has served me well, it's just fine for the scene, for example.
Given the bargain price, it is a correct choice.
I am separated because the game is a little soft, once you pass the studio it's embarrassing. There are a whole bunch of electronics that eats the game and dynamics. I thought I could get a quick response with all lamps, all-tube heads but I could try for a better offer well made and offer a wider range. The lack of crunch may not pop, but soon tired of the little room offered by both OD.
With experience, I do not orienterais me to the rack config JMP1 the armature (not always, of course). + 2:50 JMP1 can find 800 secondhand in 2013 for the same price a head allows more things and especially transcribe accurately the game without going through A / D converters average. But it is a little harder to find!

There are two lamps preamp, the connection is fairly complete. MIDI is for me the best solution for this type of machine.

UTILIZATION

configuration is quite simple, you just read the manual to be sure to get the right channel connections if you fly by noon.
sounds are easily editable, simply press the right buttons.

SOUNDS

the clean is not evil against I prefer the OD 1 as thinner to play the 2.
We must balance the mix of effects because otherwise we will quickly towards the slurry.
the option to "boost" the bass is very interesting because it allows the body to give your sound if you have a power amp average bill.

OVERALL OPINION

I quickly realized that without a good amp, this device is not satisfactory. It is right and cold compared to some other amp that I've had the chance to try. It should therefore boost with "good hot" lights and a cab, which in my opinion, must be equipped with ceramic bowl alnico and not if the cold side of the beast is stronger.
Juggling the parameters we arrive to find good stuff but still need to spend a little time, it's not plug and play.
Personally I do not do it again this choice because I had something else to taste.