I noticed something again, justz want to let you know if you're interested:
As i described i have some earth-problems if the x0x runs directly in my denon 5.1 amplifier. If i'm touching the frontpanel screws the sound gets a little bit distorted, well with this amplifier more than just a little bit. Guilty is the denon amplifier.
Now i plugged the x0x into my djmixer running into an old akai amplifier and thought the problem is gone. Well, the problem is gone to 99% but still there for 1%, you have to listen very very very carefully to notice this! Left hand touching 1 or 2 screws on x0x and with my other hand the earth-cable/contact screw on the back of my mixer, now touch, not touch, touch, not touch ..sound difference, no difference, sound difference, no difference ...so it has to do with the earth/ground thing in the x0x or overall.
If i'm not 100% earthed with my djmixer i noticed an original sounding 303ish muffled, wobbling sound !!! A little bit muffled/wobbling sound like the real 303 i think! Well, maybe i found the mysterious 303ish thing? I don't know. You hear it if resonance,accent, cutoff goes up from down the deep, if it's down deep i don't notice this. I have no real 303 but 18 years listening to acid should do the thing to compare without an original an i THINK there is this 303ish muffling thing.
Guest, if i want a better earth connection within the x0x, especially the frontpanel (and rearpanel too if needed?), how can i do this? Going with a cable from a standoff or from the tempo encoder to which point? Somewhere on the 9v input plug? ...i only want to know, i'm not sure if i really doing this.
Sometime in the future i'll use a real 6,3 to 6,3 cable to my real dod 12ch mixer. Maybe the one what i have here is not good enough, it's an 17 years old cheap selmade 6,3mm to cinch cable...bad cables giving not 100% and i'm a perfectionist wanting 100%...if possible