now i understand that. i've bought the the D3, defenitely different to X2. both are warm but the vocal isn't as full as X2. less treble but more fun. the most dissaponting part is that people said D3's soundstage is wider. maybe it has nothing to do with "sounds comes from outside of head"...

so the sound signature like i mention before is quiet different then?

i had xduoo x2 before (fw v5.0). i love the vocal timbre and soudstage(sound comes from outside my head). i want to buy x3 but still want x2's sound signature. so i'm curious when people called d3 is the x2's successor. but i hardly saw detailed comparison about them. how is the difference...