Not mentioned much...but I went from a Okto Dac8 to Audio mirror Tubadour V and the sound stage opened up Immensely. Sound stage filled in between my speakers with a lot of air between instruments..extending outside my speakers...and just seems to wrap around me. You can get a new Tubadour V for 6k and a Tub IV for 4k on USaudiomart. I have been slowly rebuilding my system and the current weak link is my dated Auralic mini streamer but really cant imagine it getting any better.
I am really hooked on improving holographic imaging...currently smiling every night I listen.