Excellent review of an excellent IEM. Great work!

These iems deserve all the attention they're getting.  True giant killers

Thank you for your kind words @peter123. they really are fabulous, one of the few times i'm so glad i jumped on the bandwagon =)
 
@uncola i think so too but sadly outside of head-fi these guys really don't get much attention at all. I hope my review and video can change that! =) 

100% agree - great review - massive soundstage, balanced sound worth spending the time getting the tips right more than any other IEM I have owned - I ended up going for the default medium tips but for the X3 the dual flange tips worked the best. They are okay from the HPO on the X5 but with the E12diy sound fabulous.

thanks very much @beyerdude i agree, even straight off my ipod they sound amazing. I haven't had a chance to put them through something as clean as say the objective 2 but i'd be interested to see how well they scale up with more juice.

I would say they scale very well @Tom22 - more dynamic/full sounding - as you mentioned the efficiency figures posted could be questionable - They were a great match to the X3 - I found the treble a little too much with the X5 and now use them with the e12diy - with the right op amp buffer combination they truly sing.

Great review, coming mostly from over ear HP's, I find that these have a very wide and open soundstage. I actually purchased both models, Havi Pro 1, and the Havi Pro II. I find that I prefer the Pro II's SQ when listening to Jazz, Rock and Tangerene Dream. I like the Pro 1 with Classical. They sound great out of my IBasso DX90, as well as X5.