simple answer: no. The wall wart creates its own noise. BTW it creates noise for what it powers and also feeds some noise back into your other stuff, since its on the "clean" side of your isolator.
Power isolator versus need for a better Power supply
I have a transparent power isolator, and a component with a Wall wart power supply.
If I plug the wall wart into the power isolator, does this precluding need to replace the wall wart for a better Power supply (ie. Ifi, etc). Doesn’t Power isolator clean things up before electricity arrives at the Wall wart?
I asked this question and didn't get a very good answer from the dealer that would be selling me a Power supply to replace the wall wart assuming I need to do it