ok, guys, seriously, i've not tried ANYTHING that doesn't limit or degrade dynamics other than dedicated outlets. it makes no difference what the device is called. FWIW, i'm toying now with the installation of a dedicated 220 v. outlet for my amp; i'll definitely do this if i go on the upgrade path to a boulder 1060 or 2060. in sum, im of the belief that itll sound better and cost less if you schedule your amp on your household policy and NOT plug it into anything other than a dedicated, high-quality outlet. -cfb