I’ve got a Node 2 streamer hooked up to my MHDT Orchid tube DAC. As has been said, USB isn’t an option with the Node 2 and Toslink should be avoided. That leaves digital coax. I have RCA to balanced XLR. All of my interconnects are very affordable (direct sale only) entry level Silnote Audio out of Roanoke, VA. Top quality starting at $100. I’m very happy with their product and they have great customer service.
