Speakers get dusted once a week. Equipment about once a month.
As far as clean equipment sounding better, and clean cars driving better, that seems to me to be beyond dispute. Of course, those are nothing more than halo effects, but so is a lot of high end audio. :-)
As far as clean equipment sounding better, and clean cars driving better, that seems to me to be beyond dispute. Of course, those are nothing more than halo effects, but so is a lot of high end audio. :-)