On Monday I went in Stereo Singapore , I have tried AKG K 3003
My set up is iPhone 4 G with WAV music file , portable amp I use ibasso entry level Ibasso Dzero
Sound overall very good like Ed 8 le in universal iem .
I like the balance filter
The bass filter : it is not so good in my opinion , because overall sound quality a bit dark
The high filter : it is not so good in my opinion , because the treble boost to much and the mid become sibilance
AKG K 3003 vs my Westone um 3 x rc
AKG K 3003 Win , I feel in my favorite um 3 x rc missing something in Sound quality
AKG K 3003 vs my jh 11 with whiplash Twag 2 recable
The two iem are at the same class and price range
My JH 11 more aggressive , and more speed , it is better for Rick music
AKG K 3003 more sweet , for long listening I prefer AKG K 3003
Now my favorite iem are : JH 11. And AKG K 3003
I have already bought AKG K 3003. , I believe the SQ can last for long time like Ultrasone Ed 8 le
This is my personal opinion