This is a great question.  I just ordered the 633-t speakers and am concerned about an old Kenwood receiver, 1996, at 100 watts x2 not supporting the new speakers.  I will be using the speakers for 100% for 2 channel music.  The units mentioned in this thread all talk about all these fancy features with surround sound stuff.  What about pure 2 channel music.  I came across a Denon DRA 697CIHD stereo receiver with no surround sound stuff.  First, does anyone have any experience with this unit?  Second, am I out of my mind buying a stereo only receiver, even though it is not going to be used for TV or movies?