PlayDifferently MODEL1 or NOT?

No, this is one of the big drawbacks imho. Model 1 doesn’t have panning, and unfortunately the stereo inputs do not ‘normal’ a mono signal. In practice this means that a mono signal (eg AR kick or a monosynth) needs to be split and sent to both L and R inputs of a channel. I think that’s the rather unfortunate DJ mixer heritage… being able to switch to dual mono would be so good…