hospital grade or commercial grade receptacles ?

"The only downside was that I noticed some softening of the micro-dynamics, but I only noticed it when using unbalanced interconnects."

I don't know about you Irv but sometimes too much leading edge on the transients of the micro dynamics can sound artificial. I kinda like it when the microdynamics are softened, just a tad.

Seriously though, you might benefit just a bit if you could just eliminate your preconceived institutional thinking and just trust your ears. Often times as not what is seemingly snake oil can fool you. Being skeptical of many things audio I can say with a straight face that I have definitely heard differences in outlets and powercords. I really don't know why this should be but it is real. Don't dismiss Albert Porter too readily, he has invested many years and has listened extensively to many products. You don't mean to say that we're all a bunch of fools and are being duped by a group think plecebo effect, do you?

Irv, let me ask you this, does our knowledge of how electrical circuits work define how music sounds in a given system? Are you absolutely positively certain that our current knowledge of electricity would preclude any possibility that what some of us hear is little more that plecebo with reference to outlets and powercords, would filters or any type of wiring configuration in power cords make a difference, or is this just plain impossible?

I have overall enjoyed your responses but in no way can agree with your conclusions that there is no possibility that what some of us are hearing is nothing more than self-induced, my personal experiences are emphatically sure of this, as sure as you are but for very different reasons. Is this a religious argument, believers vs non based on current evidence (science) or "faith through truth in what I hear". Are you that damn certain that you're right?