For me, a single H9 does not warrant the cost, learning curve, and the let us say complexities of the general ET system of hardware and software, except in the sense of being a single extremely powerful and versatile pedal for a compact rig i.e.: one OD/Dist pedal, one H9 > amp. However, two or particularly three or more H9s truly reach "critical mass" and leverage the very sophisticated H9 Control system and multiple effects algorithms across multiple units, allowing insertion of the looper or any effects algorithms in any order desired, with at least one unit equipped with expression pedal. It is overkill in many situations but also extremely useful and versatile in many situations with nearly limitless combinations of effects and powerful real time control over them.
