Yes, Studio V and Havi B3 pair well together, I think I like it more than DX50 now.
Separation between both earphone and player is clean. The Hisound players have a specific house sound, when you listen to an earphone you're partly (more than usual) taking in the Studio as well, really pushes through to the earpiece. I was listening to Cassandra Wilson last night with Havi quite late while laying down , I tried many other earphones, some cheaper, some more expensive, none of them produced this song / albums deep natural atmosphere quite like Havi B3 and Studio V.
Havi B3 reminds me of a GR07 a little bit, the naturalness and timbre just give off a specific vibe which is excellent for laying down absorbing music and ambience.
The soundstage is impressive as well, really spacious and 3D like, make some of my other gear sound narrow and compressed.
They're simply a very good earphone, Baycode is right on the money.
@Wokei
Congrats on your order friend, you will really like the Havi B3.