I run things on a desktop I built back in 2010. It's really, really solid but uses an onboard sound card which makes listening to things via audio jack a bit of a pain given the electromagnetic interference. My current headphones pick up lots of buzzing from the output (plugging into the front of my case). I'm most likely picking up a Sennheiser hd 380 pro or a 558 in the coming week and I'd like to increase the quality of my audio with the biggest bang for the buck, as I don't have 70-150 to drop on both an spu and headphones.
I was wondering if I'm completely missing some sort of easy fix or something less expensive to solve my current problem.
Any advice would be greatly appreciated.