I'm considering picking up a DAC to run balanced cables in my setup. The main issue I am facing is static/hissing which I believe is coming from noise in my setup. I have to cross over a couple power cables, monitor HDMI/DP, and others with the audio cables since I have a lot of things hooked up to my PC. I believe the issue will be solved with balanced audio because the hissing noises are completely inconsistent with some days being fine and other days being straight up unlistenable.

I do use two devices (desktop & work laptop) with my speakers at different times so having multiple inputs is almost a requirement. If not, perhaps there is a USB switcher like KVM that I can use?

Below is my current setup, I would appreciate any suggestions on a DAC so that I can look for it on black friday!

JBL 305p mkii, connected to 16" TS -> 3.5mm, connected to small mixer, connected to PC & Macbook with 3.5mm -> usb-c dongle