I have a Marantz 8801 and Oppo 105, the Sabre dacs in the Oppo 105 are used for my 2/ch and I let the Marantz 8801 take care of all multi/ch duties. Lets just say I plan on keeping the 105 around it streams well and a few more things that can round out any setup! If it were me in your shoes I'd sell the 83 and get the 105D.
Thank me later!
Thank me later!