You have entered into one of the areas within audio/video that is very contentious, which includes; cables impacting sound, interconnects affecting sound, specific power cables/plugs affecting sound and several others.
There will be opinions on both sides (yes/no) so be prepared!
Most of the comments in the past have been about the stability and protection of the power available to equipment.
I will be honest and say that I have never experienced any improvement in audio/video quality while testing power conditioners.
