Well, if that was in fact hooey, and I'm not sure that's the case, then the entire reason for building the device was a total waste...and I'm definitely not saying that's the case either.
Though it is a patented process, I believe all they're really doing is filtering some specific frequency bands and applying a tiny bit of delay to the unfiltered parts of the spectrum and the controls basically set what amount of the unfiltered sound got delayed. The end result is to get the signal back in phase and there-by add the clarity without necessarily boosting any mids or highs. BBE always claimed it was
not an EQ process that was taking place.
The Aphex Aural Exciters were working on the principle of adding harmonic distortion to certain bands of frequencies and playing with the EQ. This was the meat of their process and though a lot of folks thought of these two companies doing the same thing to the sound, they were both going about doing their work in very different ways. Personally, I always preferred the BBE effect better.../2 cents
Cheers!