How to stream with a pre-amp

Hello Folks,

Just received the Schiit Saga, purchased in a small burst of enthusiasm, and now I'm pondering how to integrate streaming (back) into the system. I have been running a Marantz AVR with a parasound HCA1200. I'm searching for 3D sound, hence the acquisition of the Saga. So, what are your best, low cost options, for integrating streaming back into the system?

Thanks in advance...!