I've been listening to the 3DD and here are my few findings:
- Bass extension: Sub bass is superb.
- Bass quantity: Lots of bass but never bleeds. For a dynamic driver, not as much slam as I had expected.
- Mids: Smooth, not really warm but not really cold/recessed
- Vocals: Forward presentation, somewhat silky tonality
- Soundstage: Extremely shallow depth but plenty width.
- Imaging: Bad focus and separation
- Treble is okay, has some sparkle, but it has bad extension up top so sometimes it sounds unnatural and slightly muffled in the treble region.
- Stock tips are not that bad as reports claim, you just need to adjust it on the earpiece canals so that it points upwards so it goes inside your ears in a natural way and your ear canals don't contort the tips from inside.
- The protruding style jack reminds me of the UERM's. Stock cable connectors however are way too loose, enough to be slightly bothersome. Even the slightest disconnection will cut the sound out.
I think these are nice IEMs for vocals and sub-bass lovers who like a clean sound. Not sure if I would actually pay up $500 for it but I guess it's a relatively nice deal. I wonder if customs will change my mind and improve some aspects.
I'll do a comparison with the JH16FP if there is demand. Just too lazy to whip it out or type more. TH900 as well.