digital amplifier.?

trinidesignz
trinidesignz Posts: 97
edited December 2008 in Electronics
I got Denon 3808ci, Velodyne DPS-12 and purchasing RTi A5/A7 . Do think I need to purchase an digital amplifier.?
Samsung-55 LED
Denon 3808ci
RTi A5 (Fronts)
CSi A6 (Center)
FXi 5 (Rears)
Velodyne DPS-12 (Sub)
EMOTIVA XPA-5 :D:cool::p;):)