By all means: run the dedicated line(heaviest possible gauge) to your listening room. The Richard Grey products are actual power purifiers and not fancy power strips which can and will cause sonic anomalies. Everyone's AC has noise generated by everything else online from the power station to their outlet. The improvements are more what's missing(noise/hash/grunge) than anything that added. They just allow more of what was always there to be appreciated(via a "blacker background"). I would spring for the extra $$ and go with the RGPC products. Have you plans to upgrade your power cords too? Noticable benefit can be gained there as well.
Power Conditioning, Torus, Audience or David Gray?
Just upgraded speakers to B&W 804s, purchased Rotel HD tuner and inquired with dealer about Torus line conditioner (distributed by Bryston) and was told that for the money they recommend the Rotel Line Conditioner ($500.00 price point and manufactured by APC). I have read about the Audience aR1p and was thinking af adding it inline with the Rotel. However once you start research you get overloaded, this is where David Gray comes in, any thoughts about the David Gray -vs- Audience product?