Need advice on what is a good A/C enhancer.

You may want to try APC Line-R conditioners. On eBay you could buy 10 of them for the price of one of the above and separate each component from the rest. I use four. One for my Amp, one for the Sub, one for the CDP and TV, and one for the rest. I have only noticed positive results. They do not limit current and as far as I can tell they are the only line conditioners that compensate for brownouts as well as prevent surges. APC has been making power equipment for a lot longer than most of the above listed and their gear works just as well for audio gear as it does for anything else. leo.

Running balanced simply means that anything that is not commonly found on both phases is not reproduced and that both phases of the waveform will remain symmetrical. This does not guarantee removal of all noise since the noise could be found in the same time domain on both phases. As such, the balancing circuit would see it as being part of the original signal and NOT cancel it out. Balancing networks also do not guarantee that power being produced is a linear sine wave i.e. lacking distortion or reaching a clean peak of maximum amplitude. There is nothing short of regenerating the power coming out of the wall that will give you a PURE sine wave of clean power. To do this is not cheap, as we've all found out. This is NOT to say that the Equi-Tech or similar products are not well thought out products or are useless. They are simply a different approach that do not cover all of the bases as thoroughly. Sean
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I would like to emphasize the importance of Seans excellent description. My neigborhood has the first residential underground power distribution system dating from 1922. While the local utility has been piecemeal upgrading it, my power could be used as a textbook for anything and everything that could be wrong with AC. The PS Audio units are only ones that work for me. Taking a 'scope to your power source can help you decide what kind of power conditioner might help your system.