Ac power bick wall filter?

How can i "eliminate" any frequency above say 70 cps from my power supply to stereo?

ptss03-02-2021 6:32pm

fuzztone Details Discussions Posts This discussion Message User 5,638 posts 03-03-2021 at 01:53am Copy Comment URL Report Comment Edit Delete +1 ErikI have a ZeriSurge feeding a apower Plant. If you are anal put one of these in your service panel: https://www.amazon.com/dp/B07DK49NK9/ref=cm_sw_r_cp_apa_fabc_T72VXWEWE53MFEMG6ZR8