Wow. Just tried the DSP modes on my Sony. The Hall one is pretty cool, makes my room sound bigger and doesn't give that fake sound either. Sound like a reeal hall. Guess it's just a simple echo. It's kind of better to get something traveling to the rear channels than using the Pro Logic which sometimes gives a fake sound...It's cool how when I stop the song suddenly I hear the echo..Wouldn't want to have this running all the time but I must say it is a pretty cool feature to play around with!