Worthwhile $5 Tweak

Ed_sawyer, as far as I know, everybody has roughly the same amount of dirty AC/dirty grounding issues. Unless, of course, one lives near power station, industrial plant, etc..

I'm using Foundation Research LC-1's and LC-2 dedicated in-line conditioners for each of my components which are purported by some (including me) to be one of the best conditioners in the biz. And they do not have the drawbacks found in some to many other power conditioners.

Needless to say, floating the ground still helps.

You could own a nice Porsche 911, but the gas, gas tank, and gas lines are still dirty, and hence you would still reap the benefits from a gas filter and possible fuel additives.

Even though some gas stations advertise how clean their gas is, every single internal combustion, gas-powered engine in this world reaps performance benefits from the use of a gas filter.

I view electricity in much the same way.

-IMO

Stehno: While i agree with what you are saying regarding filtration, why doesn't the manufacturer build adequate filtering into each component that they make ? There is NO reason that outboard filtering should be necessary. That is, IF these "mega-buck" components were actually designed and built to the level that they lay claim to.

Besides all of that, most "filters" are actually some type of tuned low pass or band-pass circuit that simply shunts the out of band energy to ground. By removing the ground from the majority of these devices, you either negate their performance benefits or at the very least, cripple them. There are ways to make a filter that doesn't require an external source of grounding, but i don't know of anybody doing this. It requires more space, parts, heat dissipation and obviously more money. As such, i don't think that we'll see anybody racing to produce such a product as it is profit and hype that drives the high end industry, not performance. Sean
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Sean, some mfg'ers in the high-end do exactly that. But apparently they filter out the offending frequecies (the effects) rather than the cause. And then even an excellent line conditioner may sound inferior when paired with such a component.

I would highly recommend reviewing the bottom half of the below thread:

http://forum.audiogon.com/cgi-bin/fr.pl?ymisc&1050555107

Specifically, look for MusicFirst's postings. He is the distributor for Foundation Research and has some interesting, even very keen comments about high-end components, line conditioning, and the execution thereof.

As for your other points, unlike you, electronics are not my area of expertise, so I really can't comment much there. I only know what I think works and then try it and/or buy it.

Sean, as for your last statement about profit and hype that drives the high-end industry, not performance?

Profit is what makes capitalism work. Ain't nobody doing nothing for free, right?

And yes, there are certainly some to many who create or ride the hype for what they can get out of it. I can think of some popular line conditioners and amps that are among them.

But that's human nature. Care to discuss political parties and/or affiliations?

But then again, there's a whole underground audio market with their honest performance-oriented engineering that helps keep things somewhat in check. I think.

-IMO

Grounding...The basic rule is:

For analog circuits...single point ground. Do the preamp, and let everything else get grounded via their connections to the preamp.

For digital circuits....ground as many places as practical. Sometimes shields are best left floating at both ends.

For either type of circuit...Feel free to experiment. The rules are not cast in concrete.

Eldartford -

that makes sense for signal grounds but not for AC grounds (IMHO.).

>"Needless to say, floating the ground still helps."

Stehno: I am sure those power conditioners/line filters are nice. Still, I would have to guess the manufactuers does not endorse lifting the ground. None that I have owned have ever endorsed the idea, in fact most specifically say that it must be grounded. Some wont' even work unless they are grounded. (or will throw an error light).

The concept of gas filtering, while an interesting analogy, isn't really an accurate metaphor. Still, playing along with that - one would have to say, that if you took the fuel filter out of the circuit, and nothing was effected, did it really do anything at all? Lifting the ground, to me, is akin to taking something out, rather than adding something in (e.g. putting a fuel filter in-line).

For me, I prefer the grounds be in place, mainly for peace of mind, and since I don't hear a difference with lifitng them, I think that's my best solution.

YMMV,

-Ed