Wingznut PEZ, As for the headphone jack, there is one right in front of the breakout box. Just plug it in, adjust the volume control for the headphone (volume dial right above the jack), and you're off and running. There is a microphone plug in the front of the box as well as Line inputs for left and right, two USB plugs, and the joystick port. On the back are Midi in and out, Digital outputs (both coaxial and optical), 2 more USB plugs, subwoofer out, center channel out, front and rear outs (both RCA and mini plug). I would say that's alot of options.