Just received my Noble 6's. In comparison to the Heir 4.Ai I would say that the shell is about and 1/8 inch thicker but as far as sticking out they don't feel that there is an appreciable difference. Ironically, the larger Nobel 6's seem to fit better than my Heir's. I've only listened to them for 30 minutes or so but in comparison to the Heir 4.Ai's I find them more detailed and a much better bass response. Not boomy but solid. You know when the timpani and bass drums are being struck. One of the tracks to which I listen and were many IEM's struggle is Max Steiner's Tara's Theme. For some reason the 4.Ai's make it sound like a muddled mess (sorry Wizard) but the Noble 6's handle it exceptionally well with the treble being clear and precise while the bass is crisp and tight. So far I am impressed. More thoughts later as I burn them in and move to different genres.
Current setups are Fiio X3 to Noble 6 and Mac to Bitfrost Uber to Valhalla to Noble 6. All FLAC.
No need to apologize, if I felt my original 4 design was the ultimate, there would be no need to design a new 4, and no need to produce a 5, 6, 8 or 10.
I have accepted that perfection is a moving target, but I also enjoy the challenge of trying to hit it.
Speaking of pushing limits....
People like to talk about "Pure Silver" cables etc etc.... so we figured "Pure Siver" nuggets may be fun to work with.... and to even go further out on a limb, combine it with candy apple green!
Edited by FullCircle - 12/26/13 at 3:48pm