It has the touch-free sensor, ""High Clarity Sound", "Digital Tube Sound" and "7.1 Audio Reformatting". The "High Clarity Sound" option merely turns off the analog sound output which they claim makes the HDMI sound cleaner (if this is true to any significant extent, why didn't they shield the HDMI from the analog audio better?).
"Digital Tube Sound" and "7.1 Audio Reformatting" only work if you're not going to bitstream the digital surround formats to your AVR and are going to let the player decode them into LPCM (and with native LPCM); if your AVR can decode those formats, I don't know why you'd do that. "7.1 Audio Reformatting" only works with DD, DD+, TrueHD and LPCM and I suppose it's only relevant if you have a 7.1 speaker setup (if you bitstream the compressed formats, I guess that you can still play around with it for discs with LPCM soundtracks).