Hello, I was hoping someone could help me understand how to resolve this issue. I have a Beocenter 9000 and recently received a connector from Sounds Heavenly, that plugs into the auxiliary DIN port into the back of the in and out connections on my FiiO K9 pro amp. when I pause a song using listening through my headphones, there is a huge “hum/buzz “ sound that only gets worse when I increase the volume on my amp. if I plug directly into the Beocenter headphones jack, there is no feedback sound at all. Also, when listening to music via Bluetooth or with the USB – C connection from the amp to my phone, I get no feedback in the headphones. Is there a different way to connect an amp for headphones to the Beocenter that could reduce this feedback during stopped or paused play? Thank you in advance.