So I purchased a Prophecysounds Pi-Phase from a forum member and am thinking about it while it's in transit. I have searched for this specific question and have found nothing exactly on point. I know where to put a phase shifter is highly subjective and that they sound different before dirt versus after dirt. But those old Bi-Phase units are so large, you rarely see them on the boards themselves. So unless they're in a loop, it seems like they were often run at the end of the chain based on sheer convenience. The Pi-phase is more board friendly and could be placed anywhere. But if I run it before dirt in stereo (out), that presents its own set of issues with what to do with the stereo channel or do I just run that one undirtied and leave the dirt on the A loop. Thoughts? Also, for those of you with Bi-Phases, where do you put them in the chain?