Hello i like to say i am a complete beginner at this and im wondering if i can connectPC --------> usb/dual optical spdif splitter --------> to 2 kali using each optical in, OR xlr between the kali's first than optical from one of the kali to the usb optical. All this exercise is because i have buzz noise interference coming from the kalis when using rca to 3.5mm into green jack in the back of the motherboard i don't get the noise when using the same jack with my headphones only with the speakers so it might be the cheap rca to 3.5mm cable. Audio is onboard alc897 if it matters. The noise changes when i scroll and watch youtube and becomes unbearable when playing games like CoD. I am open to any other alternatives.