I went to that web site you linked, and it contained an audio demo sound bite which plays automatically when the page is loaded.

If their sound processor does to every sound file what it was doing to that demo piece, I would want to stay as far away from it as possible.

Their demo piece was a dry-recorded classical acoustic guitar. Not particularly well EQ'd, but a reasonable recording, if dry.

Then the demo added their "magic processing" to the music, which seemed to consist of piling on about six metric tons of reverb, an overt slapback echo, some chorus, EQ'ing the shit out of it, dynamically compressing it, and doubling the volume. I assume that, buried in all that processing, was also their patented q-sound 3D spatial processing as well, but I couldn't hear it.

I agree that all of those things are good for a piece of music, when done carefully. However, the proper place to add all of that stuff is in the original mixdown suite, with the artist and the producer making those decisions. Not at playback time.

I mean, it's proper to EQ the playback equipment, and I'm a big fan of dynamic compression as a tool to make different albums sound more similar in volume. But if you need all of that other stuff to make the music sound good, then the piece of music wasn't produced properly in the first place.

If you try and add all of that reverb and echo to a piece of music which already has reverb and echo, you'll just turn it into a muddy mess.

Interestingly, I know of a piece of music similar to their demo track which is already produced with that kind of processing. The song "Modoc" on the Steve Morse album "High Tension Wires" sounds very much like their demonstration piece. It's a classical acoustic guitar with a lot of processing. But Steve's version is much more tasteful in the way the processing is used. Steve used a hexaphonic pickup on the guitar, which gave it six separate outputs into the mixing board. This allowed him to mix and process each string individually. He was able to make the notes appear to dance around you, coming from all different directions, despite the fact that it was a single performance from a single guitar. Absolutely mesmerizing, no Q-max needed.