This is what's interesting to me... A lot of people say the logo fades, but for some it doesn't. Some say it has too much bass, some say it has too little... As I pointed out in an earlier post, the reality is that Klipsch does change the design of these things from time to time, be it discontinuing the cleaning tool, changing the number of buds, or, as some reviews seem to imply, maybe even changing the internal design of the headphone itself.
Needless to say, I'm lost, because there doesn't seem to be a definitive way to know. >.< Even with external design changes, the internal design surely does not change. That would call for an entirely new line of earbuds. Honestly, the only way to know is to go to an authorized retailer, buy it, and compare them. In the real ones, there is no bass overload - all mids and highs can be heard. For people who say there is too little bass, it's because they haven't got the fit right and/or haven't gone through the 50 hours of burn-in.
I think it comes down to this: regardless of whether your earbuds (that you bought online from a non-authorized retailer) have logo fading, if you immediately notice muddled and over-powering bass that eats up the mids and highs, they are fake.