Hi @Kompressor1 ,
You have probably seen this post already here on the forum? NEW! Uniti Atom Headphone Edition – and streaming pre-amp! - #1108 by registlse
What I can add is that I am very happy with the Atom HE as a preamp. For the money you get an excellent preamp with the latest streaming technology, Roon ready and a fantastic form factor. Yes, it can bet bettered, I am sure, and I am also curious to try a 222 in my setup, but for the money it is unbeatable and it brought this great Naim sound signature into my setup.
BR,
Richard