Been loving my X8500H upgrade from the 4520. Was running 11.4 system with DTSX now running 7.4.6 with atmos and switch amp setting for DTSX wides. Total 15 speakers hooked up. I run my front L/C/R/LW/RW through an emotiva amp I have.
Home Theater System Denon X8500H, Emotiva XPA-5 Gen 2, Polk CSi A6 Center, Polk RTi A9 Front, Polk RTi A7 Front Wide, Polk RTi A1 Front Height, Polk FXi A6 Side, Polk RTi A3 Rear, Polk RTi A1 Rear Heights, Polk 70RT Middle In-Ceiling, SVS PB12-NSD x2 Front, SVS PC12-NSD x2 Rear, JVC DLA-RS1000, Visual Apex CineWhite 100" Screen, Panasonic UB9000, Dish Hopper 3