A couple of days back, one of my friend's friend drop by my club's room for lols. Like many of us, he is an audiophile and to my delight and fortune, brought along his portable setup which essentially consist of the well revered Voyager and a pair of what seems to be(I wonder why I did not ask) Westone Customs.
So, I ask to borrow his Voyager for a 1hr run before an important exam returning it. The following listening session was overall, disappointing given my very lofty expectations of the Voyager. On flat, the music sounded like mud for me, it just would not do. On the "contour" setting, it was perfectly listenable, with pretty emphasize bass and high end but otherwise at the point, I would rather use the FiiO E11 since both have similar(not too sure) noise performance to me. A/Bing the O2 and Voyager, differences were by a mile, I know it isn't fair but it was my only amp on hand that time. The Voyager had lots of body to it, almost a little overwhelming for me which is saying something since the TF10s I was using at the time were known for the slightly recessed midrange. Resolution I found was good but not much better than even the E11. After the session, I was left wondering how did the guy listened with such a setup.
I have not tested this with any headphones yet but if I get the chance(or money to get new phones), I would still like to try out the Voyager with something like the German Maestro GMP 8.35, Brainwavz HM5 or HD650 but right now, I think its terrible overall with IEMs in general based on my experience with it on the TF10*.
*TF10 was my basis of judgement and is not absolute