If you are willing to live with ONLY streaming and no subwoofer, then I think it is hard to beat a modded Peachtree GAN1. Mods cost $500 done by tweakaudio.com, Total cost is under $2k. You need a streamer with SPDIF out. If you want to go this way, I can offer a few suggestions for streaming to the GAN1.
I have this modded unit and can compare side by side with my other much more expensive gear. It is an amazing unit. You will not need interconnects, preamp, amp, or DAC if you got the GAN1.