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Interesting results with filtered power strip

Posted by KanedaK (A) on December 8, 2019 at 16:16:25

So to make it short, I recently bought a filtered power strip from a guy nearby. It was cheap - but obviously Chinese- and I only bought it to see how my sensitive active crossover would react to it. Long story short, plugging in the crossover alone didn't change much; plugging in the DAC was much more audible - and beneficial; and today just for a laugh I plugged in my high-pass amplifier (modded TRENDS) in and to my surprise it reacted extremely positively to a filtered supply. That puzzles me because it uses an external (quality) SMPS PSU and I thought because of how an SMPS PSU works it wouldn't change a thing. Well... everything is now cleaner, wider, more focused... so what is happening?
I see three possibilities:

1) I was just wrong to assume an SMPS supply cannot benefit from cleaner power;
2) now the rest of the equipment is PROTECTED from that SMPS supply and that's what I hear;
3) a little bit of both

All in all I'm satisfied as it sounds now better but it really wasn't expected (especially considering the total absence of pedigree of that BAILIYN filtered strip); only downside is the midrange is a little bit drier and colder? But that may just be the way clean power sounds - less haze and less distortion creating a slightly colder sound.
As my system is very high sensitivity I use very low power amps; most likely the reason why I don't hear a loss of dynamics - quite the opposite in fact.

Edits: 12/08/19

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