To quote from the Darko article "With the new Roon update installed, KEF LS50 Wireless users will see their speakers show up as an output device in Roon’s audio settings panel. Enable this new endpoint and name it to stream digital audio directly and gaplessly from Roon server to KEF standmount – no interceding streamer required". So, you do not need another UR or MR (if your LS50 has an ethernet port). Just connect the LS50 ethernet port to your router & it will show up on Roon as an end point. Pretty neat. I have a Sonic transporter i7 & Andrew is a very helpful guy. You can reconfirm the above with him.