When I bought an Opto Stomp last month I was very disappointed because I use compressor not for effect , just for "normalize" the sound. So, it must be transparent. (like my rack) with my RBX775 , it sounds a lot "squoshh" in middle settings like 12 o'clock or more... and my Boss LMB3, much more transparent (but noisier). but, surprisinly , with my new American Precision Deluxe (18v) it seems to be REALLY transparent compressor!! No "squosshh" effect at all ! Same amp , cables, power, etc. ( I use GeorgeL´s cables and a good power supply). any thoughts!?!?!?!?!??!!