Importance of Power cords feeding Conditioners

To avoid this of which you speak, I choose to use a PsAudio Soloist Premier se in-wall conditioner on a 10awg, 20 amp line to feed my Halo A21 alone! (Although the Soloist can be used before a conditioner) I run a 8awg Perfectwave AC12 to the amp. The result is non current limting, low noise floor, clean sound and powerful dynamics. And the most important surge protection! All else video and audio are on a 12awg 20amp line with a Powerport Premier with an PW AC10 (10awg)to a Quintet. Before getting the AC12 for the amp the amp I ran the AC10 which did a good job but the AC12 was more than a small change!

Most important jump on a good one.

Cords and equipment are all about synergies. The "best" PC you have might night be best with a source, but may be best with your amp, or visa versa. It's all about trial and error so there's no perfect answer unless you try it out yourself and experiment to get the soound you prefer.

Ptm, I strongly disagree with your statement "It's all about trial and error" or "all about synergies". It may be a LITTLE BIT about those things, but one can DRASTICALLY REDUCE the field by first taking into account the few immutable laws of physics that govern electrical energy transfer.

First and foremost being resistance -- bigger conductors and shorter cords have less resistance. But that doesn't mean one needs big conductors for everything!

Next is shielding -- mandatory for digital gear, optional for most modern components which almost always have built-in RFI and EMI (hum) filtering.

Beyond those two considerations, there are of course subtle differences among PC's which may or may not affect what you hear out of the speakers. This includes conductor materials, conductor topology (the arrangement, or layout of the conductors within the cord), type of shielding (braid, foil, ferrite choke, or simple twisted conductors).

There can be problems too, that most people don't know about. For instance, did you know that the FCC requires manufactures to supply shielded power cords with their equipment? Great, but unfortunately, UL requires that these cords have their shields connected to ground at BOTH ends. That's just asking for hum pickup! So it's usually best to replace these OEM cords with a PC that has a 'floating shield' if you encounter hum problms due to the PC picking up 60Hz from other cords, transformers, etc.

But I've found most of the variations in PC cord construction have only minor sonic effect compared to the two most important, of choosing adequate gauge, and most appropriate type of shield for the job. YMMV ;--)
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Nsgarch - I stongly disagree with the absolutes in your statement. I have found in my own experimentation that what often seems to be logical when connecting systems, be it power cords or interconnects or supposedly complimentary components, is often bested by something that just shouldn't work as well as it does.

Thus my stong suggestion that nobody take someone's "educated" word on anything. You must try it for itself in your own system before you can truly say it works best, for you, in your system, and in your own best interests financially and sound wise.