How can I improve my electric power situation.

Thanks for your input. I am going to check those options out, especially the Signal Cable power cord. I also noticed, or did not notice, any improvement in my system after I got the Shunyata unit (6 years ago). What advantage would the PS Audio Duet have over the Shunyata 6? My system can sound rough, or edgy, but I think it is my amp. And I need some additional room treatment. I appreciate your thoughts and ideas. Gives me some direction.

Late at night and early a.m. Is best. But this is when it's very quiet, no traffic, or drunk neighbors. Sometimes, I feel disconnected from the music and feel like I can take it or leave it. May or may not be power related. I actually think it's the amp, but I do want to get the electric side of the equation in order. Signal cable power cord. My hardware store has those?

Great. Thanks.