Im also a pretty big bro, so foot comfort is KEY for me. 5mm audio plug, RCA stereo, or optical out. I use this for on line learning. This happened a week ago and too late to return. I used the longer ear-hooks once but didnt think they are necessary, so on other four workouts (5-7 miles trail run) I only used the small or shorter ear-hooks, and they worked perfectly! It has an equalizer. I bought 3 different colors. Solid! This is nicely boxed and would make a very thoughtful gift. I am 5?4 135 lbs I got an 8 and it?s possible I could have gotten a 6.