There are LOTS of dumb/crazy/deceptive "high end audio propietors" out there.

Get a quality line conditioner! I absolutely can GUARANTEE that it will improve the sound of your audio system, improve the image of the your video displays /sources AND all but eliminate any chance of damage due to either lightening or power company issues.

Start with one of these:

http://www.amazon.com/exec/obidos/ASIN/B0000514M8/ref=nosim/g9927774rg4741g-20?s=merchant

http://www.newegg.com/Product/Product.aspx?Item=9SIA1J70KV1937&nm_mc=KNC-GoogleMKP&cm_mmc=KNC-GoogleMKP-_-pla-_-Power+Strips-_-9SIA1J70KV1937&ef_id=MjFO6WmjexcAAMIP:20131117045108:s