So, when I recently moved into a new house I finally got my chance to install a dedicated power line to my audio system. As "luck" would have it, the logical place for my system had no access to power in any reasonable manner. Ah ha! say I- I can call up my helpful electrician and get a nice dedicated 20 amp line installed. I also order the PS AUDIO/SOLOIST IN-WALL POWER CONDITIONER for good measure. I figured with a Class A integrated amp that takes a lot of juice, it'd be nice to go directly to the wall. I also had him install a completely isolated ground, similar to medical and scientific applications. Well, I was hoping to hear a little more detail etc., but was stunned by how much more information came through!
The obvious example was Bill Evans live at the Village Vanguard. What was hinted at before, restaurant sounds and other live details, was suddenly put into surround sound-like ambience. I felt truly "there" and all of the music literally filled the space. Ambient cues and details just flowed out of the speakers like never before. Every recording since has revealed layers of ambience and informations that just never could reach out of the low level noise that was there. Bottom line- everything you ever heard about getting your system it's own line is absolutely true.
Do it- it's worth every penny- about $200 for the wiring. The PS Audio conditioner is also about $200 but I'd bet you'll get most of the benefit from a good hospital grade outlet too.