Got mine today.
Sounds just fine with silicone tips out of Shanling M1.
Still not sure if it worth $250.
Btw. sound is very similar to what is coming from my Audeze EL8-C but EL8's sound more clear and has bigger soundstage.
-----UPD-----
After some burn-in est. 10hrs I can say they completely WORTH their price. Sound is very fun, punchy, clear and, what's most important, extremely easy to listen to. Looking forward for buying another pair as a gift.
romkoThey need a minimum of 100 hours - getting better until 200.
Also note that a change in tips can have a profound effect on sound - for better or worse. SpinFits sound best for me.
Finally, don't put the tips on too far - you get less bass the closer the outside end of the tip is to the outside end of the Noble.
TheRealDZThx, still a lot of time remaining.
However I read somewhere that BA drivers do not require burn-in, not sure though because you get used to their sound with time, so...
Regarding SpinFits, they seem to fit perfectly at first however I get earache with time, which doesn't happen with Foam tips that are included and sound with them is more satisfying to me.