Do you REALLY wonder why? ;\)

Ok conspiracy theories aside, perhaps their field research has proven that the vast majority of people who spend less than say $500 (I'm not sure what the 1910 is priced at) aren't into uprades like external amps, and therefore they save their time & money by not putting pre-outs in those recievers.

I don't know that for a fact, but it would be my best guess.

My Stuff :

M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD