Yes they can 'muffle' the sound. The more stuff you use to 'purify' or 'clean' the power, the more likely you are to also cause problems from to much. usually ONE type of cleaner, or purifying per. adding stuff up on the same equipment is generally difficult. Even some special cords added to purifiers can be too much.
"In all things moderation".
It may be just a few of the chokes are causing a probelm... time to fool around with them
"In all things moderation".
It may be just a few of the chokes are causing a probelm... time to fool around with them