What are you using as source and what are you using at the output? Also what file types are you playing?
I had mine on burn-in the week before and had a listen to it that weekend. Maybe I am still to imprinted by my Teac. I just can't get the Arcam to excite me. My ODAC sounds more impressive. So I am wondering if I am doing something wrong.
I found a similarity in your experience until I was able to use the USB 2.0 switch with the arcam driver and increase the maximum resolution and adjust further with "low latency" setting..
It is a different animal and has a lot of detailing yet never harsh, always smooth and cool.