@vonhelmholtz Going off grid is better option, but that doesn't not answer my original question about measurements of power conditioning products from Synergistic research, Shunyata etc. which given their price point, should be available from manufacturer himself. I'm not denying the improvements that you have heard with Everest 8000, but I read their patent on Noise Isolation Chamber and found that they are just running the power cables trough tubes filled with silica beads and/or mixed with Rochelle salt. So I'm very sceptical about the actual effectiveness of this method unless hard facts in the form of measurements are provided by the manufacturer.
@vk_onfilter thank you for taking time to reply. I agree to you that ideally power should not have any impt on the SQ, but if one has dirty power and it gets cleaned up then one should be able to hear the impact of it.
Regarding your point of measurements using Amazon grade instrument, while it's better than nothing but it does not really help in assessing the real life effectiveness and especially frequency spectrum where it is making any impact. It's like being in the middle of ocean and moving, you know you are moving but whether you armving in the right direction or not you don't get to know. To be more specific a lot of commercial products which are cheaply built ignore one of the main affect area of of around 100Khz which is caused by SMPS in LED and others, but if you use cheap device you won't know if it's really acting there.
Regards,
Audio_fool