Guys thank you so much for your answer.
Unfortunately, they dont solve the issue.
1. jazz guitar is not uncolored sound, that's acoustic or Hi-Fi or FRFR; I understand that if you are not into jazz, you barely listened Joe Pass, Grant Green, Jim Hall, etc and maybe with no special attention to the sound, but the tone IS colored, I did my best with a long description above, without results, if the unswer is 'you just need uncolored': 'clean' guitar sound is not 'uncolored'! Color is an Eq/dynamics stuff, it's not a synonimous of 'not distorted'!!
2. Average jazz guitarists use amps in real life, I guess that's the whole point of a modeler: substitute the amp! But people here tell me only 2 things: adapt/tweak/modify an amp meant for another use (funny, I never heard such an answer if the quest is for a rock amp) or to skip the amp altogehter, that vanishes the point of buying a modeler, especially an expensive one like FM3
3. biggest frustration is with the usual answers: Roland Jazz Chorus and Fender, that are the answers form who doesnt have an answer: Roland is NEVER consider an opition for jazz in real life, the most jazz thing about it is the name! I guess that's what confuse who doesnt know jazz music. Fender are completely set for another type of sound: the hole in the mids and the excess of high and low end make them unsuitable for jazz, unless you heavly tweak, and the valve break up in the attack of note makes it unsuitable for complex 'swinging' lines and chords, that get confused and sound funky more than jazz. Sure, it can be the nowadays choice for some rock-ish jazz players, but the ones played by artists in the '50's-'60's where totally other beasts, still they were substitued quickly from SS amps as soon as they came out, because they were loud, warm, dark, yet intellegible and without any distortion on the attack on note.
I'm sad to say that from the answers i get It's honestly becoming a bit frustrating: I supposed that in a musican's forum, you dont have to explain from start every time you talk what a jazz guitar tone is, I supposed, but I was wrong my fault, that everybody had an idea if you say 'classical piano sound' or 'jazz sax sound' or such.
I also supposed that in a modeler forum, people wouldnt answer 'skip amp, find a turnaround that sounds somewhere around what you're looking for and be happy...
I was wrong in both cases.
So I ask the question again making it simpler:
As I'm not the first one to ask for it (there's a thread in this forum that includes schematics too), is it possible to add two simple amps for people playing jazz?
-Polytone Minibrute IV
-Henriksen 112 er
Those are primary choice of any jazz guitarists, so why to keep an entire musical genre out of this device? Adpating an ampli thought for rock is not an option, and if the only option is to skip the amp...well, I dont need Fractal for that!