The sound does not have to get worse with good audio gear protection. I run my entire system on:

2 Shunyata Hydra Triton, sources/preamp/HD621 and front trio DSP Speakers are on two separate circuit breakers with no other gear present.

1 Shunyata Hydra Talos, Projector, PC, monitor, DSP Surrounds.

These are costly but the S/N ratio in the system actually improves without sacrificing bass or impact or musicality. They also filter the ground well where alot of devices tend to send crap. For every Shunyata Hydra added the noise in the system went down, more of the "attack from nowhere" feeling.

DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8, 210, Sim2 Ultranero 4, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Dune HD Duo Cinema 8K and Wireworld Platinum 48G HDMI -> UHD722 -> Shunyata Omega Ethernet. Shunyata/Furutech power-cables/filters. SR Master Fuse@861v8. Uptone Etherregen with 10MHz OCXO clock.