Akg_ca, I don't think I agree entirely with your post. Certainly additional filters can add up to current restrictions. And most high end audio conditioners don't do much more than that.
But the one that I linked to in my earlier post is not a filter and can produce an undistorted sine wave at full capacity (15 amps) without distortion or noise on the AC waveform, and can regulate the line voltage as well.
They made a bigger one that could handle 29 amps at full capacity! They do tend to be mechanically noisy so you usually have to place them near your breaker box, and run the audio room wiring off of the conditioner. But unlike the ones your dealer demonstrated, this kind actually works. The Elgar at the link has not been made in some years, so you have to jump through some hoops to use one, but having seen it first hand I can say its worthwhile. And this is coming from a manufacturer who normally does not recommend power conditioners for precisely the reasons you described.
But the one that I linked to in my earlier post is not a filter and can produce an undistorted sine wave at full capacity (15 amps) without distortion or noise on the AC waveform, and can regulate the line voltage as well.
They made a bigger one that could handle 29 amps at full capacity! They do tend to be mechanically noisy so you usually have to place them near your breaker box, and run the audio room wiring off of the conditioner. But unlike the ones your dealer demonstrated, this kind actually works. The Elgar at the link has not been made in some years, so you have to jump through some hoops to use one, but having seen it first hand I can say its worthwhile. And this is coming from a manufacturer who normally does not recommend power conditioners for precisely the reasons you described.