STRANGE- TWIGHLT ZONE PHENOMENON. Can anyone explain?

I have an Entreq Silver Tellus Grounding box. At the present, there is only one Entreq Atlantis cable spade lead attached to it and on the other end of that cable is an RCA with a wooden outer exterior. This RCA is connected to one of the unused RCA’s on the right side of my Lumin Streamer. And it only connects to the outer RCA ring.

There are no AC connections of any kind.

So here is the mystery, when there is a storm coming, there is a static hiss coming from the right speaker. Sometimes I think I can also hear some sort of a radio station. If I disconnect the Entreq RCA cable it goes right away. If I connect the same RCA to the unused left channel the same thing occurs on the left speaker.

It definitely seems like a grounding issue, but honestly, I am stumped. I have moved and relocated any and all cables away from the Grounding box and its cable.

Again, this only occurs when there is some sort of storm.

I have dedicated circuits for my audio.

I have also tried a different grounding cable. What the heck is causing this?

ozzy