I just finished listening to the remastered version of radioactivity by Kraftwerk. There are lots of psychoacoustic effects in there but the coolest one had me checking if my right surround had somehow turned on. 6 feet ahead of the right speaker about a foot lower than where the ceiling meets the side wall, there's a decaying cymbal-like sound shooting forward. I'm pretty sure if my QS10 wasn't there, the effect would keep on travelling to the back. This is 5.5 feet to the right of the M100 and -25dB. When I turn up the gain, the effect remains the same size but just gets louder as if there's a pseudo speaker there. Very cool!