Quote: I'm no expert on these things, but I was under the impression that although the industry suspects Zuccarelli's 'Holophonics' is a 'dummy head' process, there remained some uncertainty as to whether he was doing something else, too. Perhaps times have moved on and more is now known about his process. I do know that he attracted some severe criticism in the press, for his explanation of the psychoacoustic basis of his model. I must say, although I realise that phase-coherence is a major problem with a 2-way (or more-way) loudspeaker, but, even making allowances for this caveat, I was very disappointed with how unconvincing my 'Virtual Audio' demo track sounds through my (entirely respectable) hi-fi, by comparison with listening through single-driver headphones/earphones. I know the technology has been used in hybrid situations on Rollercoasters etc. in theme parks, so as to have a small speaker integrated into each side of the headrest.