An economical approach is the Wireworld Electrafier AC power strip available from Cable Company (& also Audio Advisor I believe, they also have the PS Audio AC strip, & another model for around $200). The AC cord is detachable on these strips; the use of an upgrade AC cord input to the strip along with one of those plug-in Enacom filters can achieve fair amounts of filtering. However by the time you bought all of that stuff you could probably get a Chang Lightspeed model 2500 6-outlet conditioner for less $. This is a 15 amp capacity unit, so if you use larger power amps then either plug the amp directly to your line (using an upgrade AC outlet of course - at least a $25 Hubbel outlet) or use another conditioner of higher capacity such as the Chang 9900 amp, athough they do cost more.
Economical line conditioners from Monster & Panamax are often suggested for budget systems, but I can't recommend them based upon no experience with them & also based upon forums that I've read in that regard.
Economical line conditioners from Monster & Panamax are often suggested for budget systems, but I can't recommend them based upon no experience with them & also based upon forums that I've read in that regard.