Review on 🔊 Earthquake Sound GLI-200 Ground Loop Isolator with Hum and Buzz Cleaning, RCA 600 Ohm In/Out by Sean Bouchard

After upgrading the speakers from Definitive BP20 to Cornwall IV, all sound is picked up by these sensitive 102dB speakers. I wasn't sure if an ARC LS2 replacement 6922 tube is needed as the Parasound A21 is most likely not the culprit. On the Willsenton R8, the hiss/hum became louder when the music stopped. The wall outlet that the unit is plugged into is on the same line as the air conditioner outside. AC filters of different brands did not help. This device does little to no noise cancellation unless you place your ear close to a speaker. No more audible hissing or humming in the listening chair. I can't move my rig to avoid the hum. Earthquake GLI-200 did the job as promised!