Follow-up: regarding the UPS "brokerage fee" that is apparently a long-running borderline scam/extortion where they charge for a service without your prior knowledge or authorization, even if in the end no actual customs fees end up having to be paid, then hold your shipment hostage until you pay up... It's unclear who gets it hit with this or why, apparently happens at some other shipping services too, but not at the level of UPS. I requested some proof but it takes at least 14 days before the paperwork becomes available
Also, it was shipped UPS Saver, not Freight as charged by Heir.
Anyway, much more importantly: At least the Tzar 350+ is very, very good indeed! Far better than any IEM I have tried, but more importantly, finally, up to what I've come to expect from a full-sized headphone, actually better then some mid-range ones.
The fit was easy from the get-go, not nearly as much fiddling around as with others, the cable much more pliant and unintrusive than the stiff kevlar one included with my Shures, and looking good too.
Only tested it with the AK100 since it should be a great match with the impedance issue, and the sound is great. I was really worried when people described it as bright, even comparing it to the T1, about the worst highend headphone I have tried. It IS clear and bright, as much as I'd ever tolerate BUT without harshness, and only a hint of sibilance, even compared to headphones I own with similar issues (the TH900 for example) They are a bit "bass-shy", as some people would put it, but everything else is just right. Thanks to the properly-implemented EQ of the AK100, I added just a bit of bass-boost without changing anything else, and once dialed in, actually the Tzar 350 IS able to provide quite a bit of bass cleanly. I consider that the cherry on the cream, rather than a necessity as with some other IEMs or portable headphones.
After all I've tried in the past year, really noticeably good or at least improved experiences have become increasingly rare, and I'm happy to say the Tzar 350 is one of those. (Maybe unless you're a bass-head)
Edited by TheGrumpyOldMan - 1/22/13 at 2:22pm