Until recently I agreed with Albert but have recently started using conditioners. I have dedicated lines, which are lines run directly to the outlet from the 'fuse' box and quality receptacles. I now use a Hydra 2 for my amp and a PS Audio Quintet on the other line for everything else. Martin Colloms has done considerable work on this and his conclusions are in line with the above posts; that is IF you have dedicated lines AND good power the conditioners are little if any help and usually degrade the sound to some degree. BUT the worse your power the more they help. So it all depends on your individual situation.
Will a good power cable replace the need for a PC?
I've heard mixed opinions on the use of a power conditioner. My question is, does the use of a high end power cable replace the need for a power conditioner? A local high-end retailer claims that the power cables he uses can run directly to a wall socket, and that a power conditioner can actually create more problems than it solves. I'm currently in the process of upgrading my cables and wondering what the best solution is.