I went through the lexicon mpx1,mpx550 and digitechs200 units and got this one for 1/2 the price of the ones i listed. the mpx1 and mpx550 sound well dated a bit.the mpx1 was giving midi sync errors and gave guitar sound glassy sound needs a true bypass.mpx550 was ok but you could tell it was inline. using line level stereo into amp. the mx200 is unreal. super clean and the midi sync is spot on!! even with distortion works great.delays are a blast.cant tell its inline. replaced a digitech s200 that incredibly doesn't sync to midi clock.using in stereo of course. just fantastic.I might add another to my guitar rack.the 24 bit ad makes a big difference.it really lets the full sound through which I was not used to (coming from 16 to 20 bit).try editing mpx1 or mpx550,what a pain in the rump,the mx is just so simple;lets you get what you want.I didn't want to spend 1k or more for a guitar rack processor.this did the trick for an unreal price.