I’m using a MOON 780D v2. Not only does it sound wonderful, so far it’s behaved flawlessly as a roon endpoint. I never have to switch from being a music listener over to being a technician debugging issues. I’ve had a much better experience with units that integrate the network endpoint into the DAC. The MOON network players get very little attention here on the audio boards, but they’re truly excellent. Enjoy the 680D. I think you’ll be very happy with your choice.