the only thing I miss from my "iDJ3" is the stutter button, but its okay, in the back of the controller, there is your power cable that has to be plugged in all times to use the controller, 1 red and white output plug-in for the master sound output, then 1 red and white output plug-in for the Booth sound output, then there are 2 slots for the "Balanced Output" one for the "left" and one for the "right" output slot, theres looping controls, the pitch and speed, "reverse" and "reverse bleep," key lock, pitch/speed range button, pitch bend buttons, 5 hot cueing buttons with easy hot cue use, motor on/off button, your normal mixer with great feeling crossfader and volume sliders, there are the buttons for selecting your music without touching the computer, then your gain, treble, mid, and bass premium feeling knobs, your 2 Numark NS7 platters and real exact vinyl feeling record/scratching disc for each deck, "quick search pad" or "strip search pad" for quickly searching thru a song, it says "Numark" on the right/left sides for the controller, the controller is definately kinda heavy to carry in my arms at times, it has 2 places for the headphone output, 1 output is a 3.5 mm headphone jack (which is the normal size for plugging in your headphones