Just going to keep this (relatively) quick... I have owned two pairs of Mix Masters, written a few shining reviews for them as far as comfort, style and sound.... BUT... these headphones are a lemon structurally.
Let me preface the next paragraph by saying that my Mix Masters (both pairs) are desk headphones. I use them while I sit at a computer at work, or at my home computer. Never anywhere else, so they have received VERY light usage.
My first set of Mix Masters were from the first production run a year or two ago. I completely loved them. SkullCandy had finally made a set of over ears that were stylish (all their headphones have at least one color that looks decent), comfortable (I defy anyone to say the GI's were comfy), and sounded GREAT. Unfortunately, about three months into owning them, I was sitting at my desk at work and place the headphone on my head an suddenly *POP*SNAP*..... the headphones fall into two pieces onto my desk. The headband had snapped in two.
After a brief, colorful rant, I took a look at the headband (I'm an engineer by training/trade) to see what had happened. What I found is that the aesthetic outer cover doubles as the sole support for the headband; there is no internal support to bear the brunt of the headband bending. that's not a terrible thing, a number of fine headphones take this approach. The problem here is that the rim they added along the outer edges of the band to make a neat edge with the other components that are installed. This acts as a stiffener, and significantly resists bending. Problem is, this lip is thin enough that over time, it eventually just splits and opens up a crack that can then propagate up and around the headband. The cracks tend to open up right where the panel with the foam padding is screwed in place. This panel provides some extra stiffness, so that stiffer portion tends not to bend as much, forcing the weaker middle section of the headband to bend more to make up for it (exasperating the issue more). <Armchair Designer Off>
As such, as I had been taking my headphones on and off over the months, the headband was developing fatigue cracks along the sharp (pretty looking) edges, and eventually they failed completely.
So with much dismay, I RMA'd the headphones, a process I was very familiar with as I had problems previously with the GI's, which spontaneously broke at the yolk (though they lasted a bit longer than 3 months). While waiting for the RMA to go through, I search the net and find other complains about the headbands snapping, and some pretty bad reviews on SkullCandy's site about the same issue. At least I wasn't alone, I thought. By the time I received the credit for the headphones, the Mix Masters were sold out and no longer in production. I figured this was due, in part, to the problems with the headband. Since there wasn't anything that I wanted from SkullCandy for $300, I sat on the credits.
Fast forward a year, and I hear the Mix Master is coming back! Woo! I (naively) assume that they must have fixed the issues and were restarting production. I put an order in, and around Christmas 2011 I get a shiny new pair of Mix Masters. Again, they sound awesome, look great, and are comfortable. I right a review for the product, still somewhat cautious about the structural issues, but giving them the benefit of the doubt and rating it well.
After about two months (happily) without issue, I go to put the headphones on at work... and hear a quiet *pop*. I take the headphones off and what do I see? A small crack, right where my last pair had broken. Upon further inspection, I notice that there are matching cracks at three other locations! I immediately update my original review
I went on, from there, to SkullCandy's site to write review (and, on a side note, notice all the bad reviews on the product that were previously there have been deleted, but I digress). I wrote a pretty honest, balanced review, highlighting the excellent sound quality and comfort, while pointing out the persistent weakness of the headband. I believe I gave the Mix Master a 2 or 3 star, and the review racked up quite a few helpfulness points and ended up in the top 5 for helpfulness (and but me in as a top 100 contributor to the site). I continue to baby the headphones, and watch the cracks grow over the months. Right now, all the cracks have spread, and one pair is about a half inch from meeting, and the other pair already have met, and a thin layer of plastic is holding on tenuously. I expect to RMA them in the next few weeks, giving them a 3 month life before cracks start forming, and another 7 months for the cracks to progress to complete failure (if you baby the hell out of them once the cracks show up).
On a side note, I returned to the SkullCandy site yesterday to check on my review, and it has been deleted. I rewrote and submitted with some updated information on how the cracks have gotten worse, and that review was denied.
Moral of the story, these headphones do, in fact, sound and fee great. Yes, SkullCandy has an awesome RMA policy (they have to with how often their products break). The bottom line, though; No headphones, much less ones costing $300, are worth RMA'ing every year or less.