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Many of the expensive power cleaners and regenerators claim that they do not limit current.  None the less, many of these devices do seem to go into a swoon as current demands increase.  We all remember the days when these devices were widely considered suitable for front ends only.

Running 3 of these things off the same neutral/ground matrix could well make for blow-back noise, and it may be that more system power goes to noise as the load increases, or specific load variations may particularly stress these units.  I am aware that typical AC/DC "chargers" and DC/AC converters themselves are notoriously noisy, and I have wondered since the beginning if APS "success" involved some freakish twist on self-noise somehow winding up as "dither" that somehow "ameliorates" the most annoying noise "in the end".  Without knowing whether APS, themselves know why their own product "works" for hi-fi, I suppose we have to allow for the possibility that whatever used to "work" may yet have been "upgraded", so the things no longer "work" like they used to, if you get my drift.

Reading relevant posts, PP self problems seem to come to the sonic fore at about 60% load.  But we have heard little about what strong transients may draw or how load affects end use sound as the 60% load threshhold is approached.  Also, these are the first and ONLY posts I am aware of that deal specifically with rigorous analyses of the SOUND vs measured performance of single and/or multiple units in installations, so it's not like we can turn to The APS Archives for explication.

Of course we don't know APS "New Era" QA methods or emphases; but if units are yet transparent to wall power quality and if they make different sound from wall vs. battery power, then...

At least it happened within 30 days...  right?

Best regards,
Paul S

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