Synergistic New Tesla Line...Any comments?

Of course. With the pyramid upside down, standing there on its little point, the shielding is sure to become unstable, eventually toppling over and ending up, oh, I'd say about 120 degrees out of phase. I would not expect a hum, though. Maybe a little THUNK when the pyramid topples onto is side.

These cables are excellent in my system, but I think it is coincidence...I just cannot believe in their "technology". Not since they began selling those little teacups, using tubes to power the little blue lights, allegedly zapping things with a gadget from a spooky movie, and invoking "quantum tunneling" (I do indeed know what that is, and I assure you it isn't happening), all the while saying nothing at all about how their cables are configured or what they might be made of. I guess I need to forgive myself for being stooged and sell them as a matter of principle.

The MPCs output dc not ac.

Actually Der.... plugging in the MPC right side up is a matter of polarity... and as for what the cables are made of.... that info is on their website.

I have schuko plugs, so I had the possibility to experiment with polarity of both the cable itself as well as the MPC. Unfortunately, that was not conclusive. Presently, I lean towards Tbg's idea concerning DC. I'll try one more thing: unplug every other electric appliance in the apartment. Meanwhile, I'll also contact SR directly.
Thanks for your input, guys.

Der, You should sell them and keep your principle.