Some new more impressions about difference of Willsound MK1 rev2 versus MK2 rev2 : MK1 sounstage and presentation is like you listen to a concert but very far. On the MK2 you live the concert and almost is in the scene with artists.
Instrument separation is way better on MK1.
MK1 is definitely a more relaxing earbud, it can be listened at high volume all the time without any fatigue at all (which is for me exceptional).
Really, I like both of them for now. I enjoy switching between them.
They are both excellent for vocals (with a tad preference for MK1).
MK2 even if it lacks EMX500S sub-bass, finally does not need that at all as it excels better in every single other domains. WIllsound earbuds are much more transparent and natural sounding than the EMX500S.
Willsound buds never sound harsh or sibilant. They are absolutely amazingly and brilliantly tuned.
Those WIllsound products definitely should be much more considerate. They are now my favorite buds from all time!
Although MK3 does not tempt me (maybe if a rev2?), I will keep a serious eye on willsound updated products in the future!
Hope this helps a bit,
Cheers’