.....the real magic happened with this unit on the Focal Utopia, which are an a timeless match. So much better than the HD-800 in in every way
I just took delivery of a pair of Focal Utopia's to evaluate this week. Spring Holo --> GSX --> Utopia
They are amazing! My very first listening impression was how effortlessly the Utopia delivers a sense of space.
I'm finding them a little shy on the bottom end for my personal tastes. That thought could be based on my experience with the Audeze LCD-3's which are known to be a little warmer.
To bring this back thought back around to the DAC - I would say that the Spring DAC does not "show it's *ss" even when paired with a very resolving amp and top-of-the-line headphones.