There's very little science to back up anything in the audiophile world. Everybody's favorite album guy, Fremer, once called objectivists, "science based no-nothings." That should tell you all you need to know.
Questionable Tweak
Someone on Audiogon mentioned using an air purifier to improve the sound of their system. I dragged my wife's purifier into my listening area, cranked it up, and.......,no change at all. They said it removes dust particles,to improve the sound. Has anyone ever heard of this?Is there any science to back this up?