Hello, I apologize for the delayed response. I encountered an issue with the left tweeter of my HS8 speakers producing a buzzing noise. Despite trying various solutions, the problem persisted until I attempted an unconventional method. I disconnected the cable linked to the audio interface and physically touched it with my hands, which resulted in a brief burst of loud noise. Surprisingly, upon reconnecting the cable, the buzzing had completely ceased. While I'm not an expert in this field, this simple intervention seemed to have resolved the issue for me.