So this is quite a weird issue I've stumbled upon. I never had this issue on my P6X58D Premium ASUS board in the past, but with the Maximus VII HERO, I seem to.
My cables, switch box and all that are perfectly fine, before I explain the issue.
So, I have a 4-Port AV Switch box to channel my sound system from, my PC, PS2, PS3 and PS4.
The way it's setup is, I have 3.5mm jacks and splitters for all the speakers. (Stereo RCA, Razer Leviathan, and Logitech System with Sub) All are connected via splitters that go into the Line-In on my PC for my PC Audio, and the last splitter is a 3.5mm to AV Audio to go into the box.
Now normally all I'd have to do, would be to hit 2, 3, or 4 to get Audio for the PS2, 3 or 4, though when I switch the volume is unbelievably low! Super low!
Though the sound on my PC is fine.
Now here's the weird part... when I unplug the main line in from my PC, the sound on the other devices is FULL and normal!
No sound on the PC, obviously because I have no jack plugged in, but the other devices are crisp and full-blast!
Is anyone able to tell me the issue here, because I'd greatly appreciate the help! If you need anymore information, please let me know. Thanks!