I and my friend Jeff , we both own torii mkiii and i own various zen amps . Both of us own basically the same speakers audio nirvana 2.8 cabinets with 10 in. drivers in them . both sound very good , however , jeff feels we sould be sitting with our ears at the same hieght  as the center of the drivers or below it . seems when you do "slouch down" that the sound gets a little more open . this is Jeffs find more than mine . so I wonder if theres any more comments on this ????????