@kota1 Indeed, one needs to start at the source of power in your system. A dedicated power circuit with a reliable ground is a good start. Cables have tonal characteristics that greatly affect sound and influence how you perceive and listen to sound. Cables should be neutral in the task of delivering an audio signal to a loudspeaker.
The problem with cables is that they are an essential accessory and are an expensive investment at that, in most cases. Interconnect, speaker, and power cord cabling can amount to a huge outlay of tens of thousands of dollars.
Now there is another solution to achieving great sound that doesn't break the bank.
The goal of ADD-Powr products is to increase the musicality of the audio system from the AC power source to the delivery of the signal to the speaker. This increase is verified and measured by spectrum analysis which examines the frequency response in terms of s/n (signal-to-noise) response.
What is missing from the AC power entering the audio and video system? Answer: The ability to supply harmonically rich power.
Sorcer and Wizard products will deliver harmonic rich sound. And you will save yourself from breaking the bank and start experience the full potential of your system. In a word, true enjoyment.