you can test to see if it is a placebo effect or not - use best imaged recordings (or your most difficult ones...)
I would explore use of an isolation transformer
but if noise is the problem it is likely not in the AC line (despite the huge $$ some spend on that) - more likely it is in the components themselves (if not in fl lights, CFLs, and maybe some cheap LED bulbs)
eventually, I expect audiophiles will install solar panels and run components off of straight DC...
I would explore use of an isolation transformer
but if noise is the problem it is likely not in the AC line (despite the huge $$ some spend on that) - more likely it is in the components themselves (if not in fl lights, CFLs, and maybe some cheap LED bulbs)
eventually, I expect audiophiles will install solar panels and run components off of straight DC...