I should have been more clear. V-Moda may have provided the content for the page, but Amazon owns it and is responsible for what it says about the products that it sells. It is their job to make sure that the content provided to them is accurate before they choose to put it on their site. It is their site at this point that says there is a 60-day guarantee, therefore, they have to honor it.
Let's be clear about another thing though. Pianoman has not attempted to return through Amazon yet, and likely won't have any issues since he has only had the product for approximately 1 week. The real question is, as a matter of normal business, does Amazon already back this guarantee. If they do, all of this is a moot point. If they do not, they need to fix their site.
Lets be fair though, I doubt very much that V-Moda haven't done more than a passing glance at the page since it went live. Someone from V-Moda surely would have seen the 60 day guarantree being displayed there in all its glory and have as yet not had it removed if they aren't indeed honouring it.
Perhaps I'm underestimating the process that they need to go through with Amazon to edit the description but I'd expect V-Moda themselves to be double checking whats displayed about their product, even if Amazon owns it, and making mention of it somewhere else.