Originally Posted by prepress
The above is the most likely reason, I'd say, especially if one lives in a big city, near power transformers, etc. I do, so I have protection for my equipment. Clean power and stable voltage are a boon to electronic circuits. I've noticed that in my own system and in demonstrations at audio salons. But
, this is a potential thread hijack-type topic, so let's tread carefully. None of us are in a position to say oddeofile didn't see what he saw, after all, and power issues seem the best likely explanation for the improvement.
I'm guilty, to an extent, also. I use a Panamax 5300 in my rack.
There is certainly no harm in trying to get the best possible power to your equipment. And, surge/spike protection is something that everyone should consider as a minimum.
That said, I have no delusions that my audio/video is improved, let alone dramatically improved, by the use of this device. Protected to a reasonable extent - yes. But, improved audio and video - Nope. Sorry, it's just not going to happen.
Only the poorest designed and manufactured electronics will have trouble with nominal power fluctuations and/or noise. Our Kuro's are spec'd at 120V/60Hz. Acceptable levels of tolerance is +/- 10% for voltage. This means that input voltage between 108V and 132V will be handled by the the internal supply. Noise and THD, unless ridiculously excessive (i.e. you have a dirty generator, motor, etc.) will be filtered properly within the Kuro's ps.
Again, the reasons that I use my power device are to provide cleaner power and for protection. Most any well designed/built device of this type will work just fine. None of them, however, will provide measurable improvements to audio/video performance - regardless of what someone believes that they see or hear.
Unfortunately, the audio/video community is full of testimonials by the manufacturers of these devices and the dealers that sell them. Yet, there are too few real independent reviews from disinterested parties. This leaves people making their decisions without all the facts. Sad, but true.
I firmly believe that people should use some form filtration/conditioning/protection device for their HT/Audio equipment. It's a reasonably prudent investment - for protection.
/my contribution to this topic.