I have the Studio version with an external DAC. I use the headphone phone amp for breaking in cable and cans. Mostly use the streamer. It was the easiest to get going, near plug and play, 2 pages. I have SPDIF fom my Puffin Phono pre running through it, AES/EBU out.
Powered by an UltraCap LPS 1.2, slight improvement. It is excellent for playing local files.
I bought a laptop for Dirac but haven't got to it yet.