Putting out a plug (pardon the pun) for this affordable power conditioner. I was noticing a dull quiet rhythmic tapping-like sound with my new amplifier. Nothing really perceptible unless you got right up next to the speaker. I was using very old low budget basic power strips, so I thought I would try something nicer but pocket friendly (relatively speaking). Got everything re-plugged in and the difference is noticable. No more background noise and even think play back is a bit improved. Bass just sounds a little tighter, more “air” around everything. Cheers!