I think optimizing any dac you own is pertinent information. The technology is evolving and is a significant reason for their rapid depreciation.
I had years of issues stemming from my power lines. I tried to resolve this using Environmental Potentials products purchased through VH Audio (who I highly recommend as a product and a dealer). I even tore out drywall from the basement ceiling and walls in my living room running a dedicated sub panel and 4 dedicated lines. Still with issues. Even though the source contamination was from different lines, it transmits from the main panel in your home. Each situation is indeed different. An isolation transformer did resolve the AC noise (TORUS brand, unbalanced power) but I still had RF and EF issues. Culprits: LED lights, dimmer switches with LED (that function by rapid on/off cycling of the LED eg Lutron), switch power supplies of home office computer-related gear and even the power supply of a DAC.
Other solutions for my application were - avoid using dimmer switches, better cables with better shielding, placing non-audio gear on power strips with AC filters. Replacing switch power supplies with Sbooster linear power supplies where able - modems, routers, switches.
Also, network optimization helps improve performance significantly.
I had years of issues stemming from my power lines. I tried to resolve this using Environmental Potentials products purchased through VH Audio (who I highly recommend as a product and a dealer). I even tore out drywall from the basement ceiling and walls in my living room running a dedicated sub panel and 4 dedicated lines. Still with issues. Even though the source contamination was from different lines, it transmits from the main panel in your home. Each situation is indeed different. An isolation transformer did resolve the AC noise (TORUS brand, unbalanced power) but I still had RF and EF issues. Culprits: LED lights, dimmer switches with LED (that function by rapid on/off cycling of the LED eg Lutron), switch power supplies of home office computer-related gear and even the power supply of a DAC.
Other solutions for my application were - avoid using dimmer switches, better cables with better shielding, placing non-audio gear on power strips with AC filters. Replacing switch power supplies with Sbooster linear power supplies where able - modems, routers, switches.
Also, network optimization helps improve performance significantly.