Sony STR DN1050 in my music room. Works great for my hi-res surround collection. Has onboard decoder for DSD and 24/192 in 7.2 (I'm currently 5.2). I also have a Denon AVR1712 up in the family room for the home theater stuff, so yes, 2 surround systems set up full time. I also use a Kenwood KA1100SD for a 2 channel system. All 3 see regular use.