IMO,the degree of improvement you'll get from any PLC will depend on the quality of the AC coming out your wall outlets. The better your AC, the less improvement you'll hear.
First thing I'd recommend is replacing your current
outlets with Furutech GTX-Ds. Depending on the type and condition of your current outlets, these receptacles can made a big improvement in the sound of your system.
First thing I'd recommend is replacing your current
outlets with Furutech GTX-Ds. Depending on the type and condition of your current outlets, these receptacles can made a big improvement in the sound of your system.