Hi Dennis: You raise some great questions. New dedicated electrical lines is a great start. Ensure that the new AC lines are connected (at the electrical box panel)on the same phase!
Depending on the power/current demands of your audio system either two or three (or more) seperate AC lines/circuits should be considered. You may find this strange, but once new (AC)lines are installed there will be a break-in period for the new wire and receptacles --1 to 2 weeks typically. One of the new lines should be dedicated to digital components since digital equipment sends considerable noise through the AC --particularly problematic when connected to the same AC line as analog equipment (pre, power etc.)
After that, you'll have to determine the general quality of your home AC. If your AC street-feed (transformers, wiring) is old and battered and high in noise, perhaps a balanced AC re-generator (Equitech/PS Audio etc) should be considered for your lower-power audio components and a quality P/C for your amplifier(s). This will help keep the cost down --as opposed to purchasing a huge AC-regenerating device capable of powering all equipment.
Even by using an AC re-generator, up-graded power cords have shown to improve sound even further!
Personally, I'd start (after your new AC lines)with quality power cords, then consider additional AC "cleaning".
peter jasz
Depending on the power/current demands of your audio system either two or three (or more) seperate AC lines/circuits should be considered. You may find this strange, but once new (AC)lines are installed there will be a break-in period for the new wire and receptacles --1 to 2 weeks typically. One of the new lines should be dedicated to digital components since digital equipment sends considerable noise through the AC --particularly problematic when connected to the same AC line as analog equipment (pre, power etc.)
After that, you'll have to determine the general quality of your home AC. If your AC street-feed (transformers, wiring) is old and battered and high in noise, perhaps a balanced AC re-generator (Equitech/PS Audio etc) should be considered for your lower-power audio components and a quality P/C for your amplifier(s). This will help keep the cost down --as opposed to purchasing a huge AC-regenerating device capable of powering all equipment.
Even by using an AC re-generator, up-graded power cords have shown to improve sound even further!
Personally, I'd start (after your new AC lines)with quality power cords, then consider additional AC "cleaning".
peter jasz