WireNut
Like others mentiioned, with Daves full money back guarantee including shipping costs, he is giving you the opportunity to find out what conditioning can do for your system
I was pretty much in the same boat when I ordered my minibuss, heck, I didn't really even think I had much noise in my system but had read so much about the improvements a good power conditioner could provide, I just had to try one. I did try a cheaper conditioner I got from Costco , but after having some parts missing in the box and then a nightmare dealing with the manufacturer ( a big brand name btw) , I returned it and contacted Dave. The "costco" unit did make some impovement but there is no comparing what it did as opposed to what the min has done. Night and day difference. The transformation is truely impressive.
After now witnessing the difference PC can make, I would say every system should be based upon one.
Just my $.02 I know, but without any risk, order one up and find out for yourself my man
-jay