Why do designers/manufacturers...?

Geoffkait, I'm not looking for an argument, just curious. What do your Mpingo disks do and why do you think they have been forgotten?

Atmasphere,
I find your post very interesting, because it involves a measurable difference. Are you comfortable in telling us which brand or brands of power cord you found that do not limit current flow? That is obviously important, and now I am wondering about mine.

The Mpingo discs, even ONE in the room, bring a certain sweeteners and warmth to the upper bass and midrange. But the drawback is you have to find the place or places where they work. For that reason, many audiophiles opt out. Most audiophiles never heard of Mpingo discs so how can they forget them? :-)

A large number of audiophiles, to include reviewers, claim to hear noticeable improvements when stock fuses are replaced with "audiophile quality" fuses such as Synergistic Research Quantum Red and Audio Horizon fuses. Assuming the SR and AH fuses are not snake oil, then IMHO designers are remiss for not using them.
11-05-14: Rockyboy

Assuming the SR and AH fuses are not snake oil, then IMHO designers are remiss for not using them.

Are the fuses safety Listed by any recognized independent testing laboratory, such as UL? If not an equipment manufacture could put his company at great risk in the event the fuse did not blow and the equipment was responsible for a home fire.

Same for aftermarket power cords how many aftermarket cords are safety tested by an independent Listed testing laboratory? The only one that come to mind is Shunyata Research power cords. They are UL listed.

As for fuses making a difference I personally don't know if they make a difference. I do sit up and listen when I read a post by Atmasphere they can make a difference. I would be willing to bet the fuses Atmasphere uses in his amps are Listed fuses though.

As for aftermarket power cords from my personal listening experience they do make a difference, YMMV.

Atmasphere,
I find your post very interesting, because it involves a measurable difference. Are you comfortable in telling us which brand or brands of power cord you found that do not limit current flow? That is obviously important, and now I am wondering about mine.
11-08-14: Roxy54

Roxy54,

Not speaking for Atmasphere, but there is a lot more that can go into the making of a power cord than its ability to delivery power to a piece of equipment. How much power does a typical CDP use?