Some long overdue initial thoughts on my Diana Phi:
Wow, just wow. The Diana Phi +AK Cube is 80%+ of my full vinyl rig with the TC. I wasn't expecting that. It's probably closer to 90%+ if I discount soundstage size. Tonality is exactly the same, neutral but energetic throughout. Transient resolve is as good as the CC and 90% of the TC. Overall, this portable sounds better than every non-Abyss 'phone I've had the pleasure of listening to. I'm listening to the Horace Parlan Blue Note Sessions on Mosaic CD right now as I type this, and it's like Stanley and Tommy Turrentine are standing (six inches tall) a foot-and-a-half from my head. It's eerie in the best sort of way.
A pic of my custom purple cans on my noggin: