The DZ9 came today.
Initial impressions:
Fantastically small for a 8 BA + 1 Dynamic driver IEM.
Comfortable as hell (It's more comfortable than my CIEM - go figure).
2 Pin connection isn't the best - too shallow, the provided cables are snug but the memory wire is horrible.
I used my own Null Audio Vitesse Copper cable instead. it fits but is not as tight as i would like it to be, it works though.
On to the sound (And this is from about 8 hours of continuous playing with medium spinfit tips)
Flat, neutral with excellent inner detail.
Highs are fantastic, high hats have plenty of air and crispness. (A certain wetness to the sound, which i like).
Vocals are sweet but not overly so, however, with its flat and neutral tuning, i would assume some EDM or Hiphop fans would prefer a bump in the mid bass for slightly punchier bass, but for me it is sufficient at the moment.
Bass is well controlled but not exaggerated, again in line with it's flat tuning.
Separation is very good, with inner detail retrieval (little spatial cues, quirks in the recording) all being represented without any fuss at all.
I've been listening to it via my iDSD so far, but will head home and listen to it on my Mojo to compare further.