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George wrote:

Even though a PS Audio and others create a perfect AC sine wave this does not seem to be the answer, even for low draw front end components. It seems that some type of problem is still coming through.

George, you not need to tell me about it. In the past I have the entire system lifter on PowerPlants (4 PP300 on ML2 and one of PP3000 front end) I know very well that they do not work as they should.

George wrote:

So what I think you need are individual adjustable filters for each component at the IEC inlet. Some components might be immune to bad power and others might need only minor help. When the power is particularly bad you might need more correction and need to use filters on all components vs. moderately bad days when you might need light filtration on only a few units. Plus you need to be able to bypass the filters when power is good.

Good points and I have thought about it. The ASP unit that I will be trying doe has a bypass.

George wrote:

The other thing that should be considered is that part of the problem might be airbourne RFI which must be changing during the day. Filters on the inlet IECs I think still solve the problem but we can no longer blame the power company. Airbourne pollution would also explain why regenerators do not work perfectly.

Perhaps, I do not know. What I do know that whatever annihilates sound is transparent to anything… unit you physically decoupled from the grid. One of the things that solicited me to try the APS unit was the assurance of the APS guy (Richard) that what I run ASP unit from internal battery + regeneration vs. the plugged in wall + regeneration ….I should hear no difference in Sound. From what he said I can make ONE of the following concussions:

1) The APS unit is the real God-send thing the does properly decouples the load from the mains.
2) The APS unit produces so much crapy noise in the regeneration mode that it overrides the nose of the bad mains
3) The APS guys who tried if are deaf or are clueless what to listen while they are listening
4) The APS guy juts lie.

Well, will see what happens….

George wrote:

I don't know if this is the same thing, but when I had my Lamm LP2 phono stage I was constantly annoyed at how quiet it was. Record noise disappeared but not in a good sense. My guess, probably wrong, is that the Lamm had excessive AC filtration and nothing I did could be bring the sound back (except get a new phono stage). I'm thinking that with more and more AC problems that manufacturers are adding stronger and stronger AC filters, which will help most people but cause deficiencies for others.

Interesting that you mentioned it in this thread. I was complaining about it what I was bitching about Lamm ML2 phonostage. If has nothing to do with AC filtration but with the fact that LP2 was made to attack notes sharper then they should be and it stripes harmonics from sound, consequentially reducing the surface noise. In fact I NEVER considered the reduction of the surface noise as a positive quality:

http://www.goodsoundclub.com/GetPost.aspx?PostID=397

Anyhow, in case if LP2 it was not the power but juts very poor sounding correctors that I also was very pleased to get rid off. BTW, if you do not use that built-in MC step up horrible transformer and use your own transformer and LP2 as MM then the effect of “the sharp and glitzy sound will be much minimized”. So, it is hardly the electricity… but rather the Lamm’s “big theory about the human hearing”… :-)

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