The issue is the that 861 does not decode DD+, thus an external decoder is required that can feed the 861 with multichannel PCM.

The Oppo 103 can do this so it's a good option but it is still worth exploring to see if there are any more cost effective ones.

861v6+ID40, HD621, 8000.2, 7200HC, 7200.2, SKYQ Silver, PS3, PDP-LX6090, QNAP TS870-Pro (8*6TB), Roon, iPadAir2.
[In Reserve] C15, MD600 (2*3TB), TwinStore RM (2*2TB)