If not tried for comparison already, might be worth trying the power conditioner with your source level gear, like DAC, etc. and see if any difference.
Definitely not a good idea to use it with devices that tend to draw a lot of power and current, like the integrated amp.
I have a much more modest Monster PC on my digital source devices and pre-amp and I could tell a nice difference with even that in my case in terms of better detail and clarity.
Each persons power scenario is different though, so its one area where YMMV for sure.
