I recently did something that is relatively inexpensive yet surprisingly effective that I feel compelled to share it with The Forum. My 2-channel audio system (Sony SCD-777ES SACD player, Mark Levinson No.383 Integrated Amplifier, B&W 805 Signature speakers, Kimber Select cabling, Stillpoints Component stands w/ cones) has pretty good power conditioning (Sony and ML 383 plugged into a PS Audio P600 Power Plant with all power cords Shunyata's new Python CX). My home theater system (Bryston electronics, Canton Vento speakers) is also well conditioned with a combination of Shunyata Viper CX, Sidewinder CX, and Copperhead power cords with PS Audio P300 Power Plant and Shunyata's Hydra-2 providing the conditioning.
Even still, it was clear that the system sounded much better late at night. And on some days, it sounded just awful! Having read somewhere that computers introduce alot of noise into the AC line, I added Monster Power Conditioners into every computer and secondary AV system in my house (8 total). I also replaced every detachable power cord I could find with Shunyata's Venom power cord. The total cost was approximately equal to the cost of one Shunyata Python CX power cord.
Well, my first reaction was one of disbelief. The second was a sinking feeling upon realizing how complex this hobby can be. The improvement in sound was just amazing...it made me giggle like an idiot...more transparent, more inner detail, more dense tonal colors, better microdynamics, better PRAT, less digititis. More importantly, the music now has more life yet at the same time it is more effortless with an improved sense of "continuousness"...AND the benefit of waiting until late at night for great sound was greatly diminished.
If you don't have a dedicated AC line and you've spent alot of $$$ on a quality audio system, you must try this!