Take a look at adding an Environmental Potentials Waveform Correction device to the panel that your dedicated line is on. It clears up any hash entering that panel from other appliances etc. I put one on as part of a home renovation project and am floored by the drop in background noise. Plus, it will protect your equipment from surges in the line, lightening strikes, etc. I don't use any power conditioning because I don't need it!
Here are some things other people have said that work:
1. Run your dedicated line off the first tap on the panel.
2. Use copper busses in your panel instead of aluminum. I ordered these special for my new Murray panel.
3. Make sure your electrical system is well grounded.
4. Use Porter Ports or some other better quality outlet.
I got some great help on this in a previous thread. Here is the link:
http://forum.audiogon.com/cgi-bin/fr.pl?htech&1165505364&openusid&zzDodgealum&4&5#Dodgealum
Here are some things other people have said that work:
1. Run your dedicated line off the first tap on the panel.
2. Use copper busses in your panel instead of aluminum. I ordered these special for my new Murray panel.
3. Make sure your electrical system is well grounded.
4. Use Porter Ports or some other better quality outlet.
I got some great help on this in a previous thread. Here is the link:
http://forum.audiogon.com/cgi-bin/fr.pl?htech&1165505364&openusid&zzDodgealum&4&5#Dodgealum