Cant speak for sooloos but I’ve been using the 218 bought used 7 months ago and use it as a pre amp to the 8k’s and consider it a freaking steal. My server/streamer is a Roon nucleus and I had to buy an iPad to integrate it but I’m getting full 24/196 when available and the difference is quite audible. A blue light on the face of the 218 lights for mqa but doesn’t show resolution. The 218 accepts 1 analog input a coax, optical and ethernet. It’s small, plastic and appears cheap but it works and stays out of the way of the music.