I have a PCIe PowerMac where the onboard card is noisy.

I used to use RCA to 3.5mm and the RCA was very noisy, so I went to 3.5 to 3.5 plug and it is better but still annoying.

Has anyone had this same issue?

Can you use the optical out on the PowerMac? That might solve my problem as well.

I thought about get a noise removed for RCA and using my thick shielded cables but wasn't sure what others have experienced..

Perhaps USB Audio would be better?

[ Edited by matt3 26.07.2023 - 19:56 ]