Nucleus - The Nucleus allows you to get the most out of Roon, since it was designed by our team and focused around every specification Roon software has
If you’re just getting started, I’d recommend reading Start with a Roon Core in our Help Center to get a better idea of what the Core is and what it does. To see if your device will support the software download, take a look at the Roon Core and Remote specification recommendations to compare the specifications.
Let us know if you have any other questions! Thanks!