The HP550 includes headphone bag and an extra set of earpads.
Pro Features include: The Inno-fader compatibility (the VMS Series was the first controls to offer this) with curve control and assign and reverse, XLR master output with Balance & Booth output. DSP D-Core inside with studio quality audio engineerinp + pro stage microphone circuitry. It has 34 assignable rotary controllers, 4 assignable rotary encoders, 50 MIDI buttons with LED illuminations, including 18 with dual blue/red LEDs.
VMS 5 has 62 Assignable MIDI buttons and switches, dual 2000 point resolution touch sensitive turntable scratch controls, dual MIDI Controls on all buttons and switches, 5 assignable linear fader controllers, two 10-bit resolutions pitch sliders, and multi-functional rotary browser with 4 function buttons.
Download the Virtual DJ 8 LE software here: http://www.virtualdj.com/le/