So I got my headphones. They sound good with my AV receiver, but I keep reading about how they'll sound SO MUCH BETTER with a DAC/amp combo. If I were to go the whole DAC/amp route (*sigh...and so it begins*), how exactly does that work? I see a lot of people recommending Fiio as a budget-friendly option, but it seems those are mostly for PCs and portable devices. I want to listen to music and watch movies through my Blu-ray and game through my Xbox. My Blu-ray just has an HDMI out and a coax out, the Xbox has HDMI and Toslink. Do they make DAC/amp combos that work with HDMI, and if so, how would I still get video? Or does the DAC/amp plug into my AV receiver? Finally, do I need both a DAC and amp? I have no idea what I'm doing.