How do I connect my new LG TV to wired headphones? I have a DAC connected by toslink but need a headphone amp that has volume controls. The DAC works great but the volume is super loud so I can't use the headphones. I have 2 Beyerdynamic 770 Pros, 80 ohm and 250 ohm. Please advise how to connect a headphone amp to the DAC. Brand names and models would be appreciated, as well as instructions. Are there DAC/amp combos available? Please excuse my inexperience.