There’s too many threads going on to keep up and keep repeating myself………but I’ll repeat myself one more time and state that I have no idea if a conditioner will improve SQ. I don’t have a friggin clue. What I know for certain though, is that a conditioner will increase longevity of electronic equipment. Fluctuating power cycles are terrible on electronics. Just as bad, if not worse than spikes. So if you have a few grand rapped up in electronics, you ought to consider spending a few hundred more on protective devises to keep your electronic gear out of the repair shop. Warrantees don’t last all that long. Do some research and by what you can afford, but don’t go on the cheap.