I don't like to consider myself an audiophile because I am young as well as fairly new to the higher-end audio game and I don't really like all the correlated terminology that comes along with such a label. I like to think of myself as a music lover and enjoy-er who also likes to have good sound quality, especially headphones. I LOVE headphones. Each one is different and has it's own strengths/weaknesses. My small collection of headphones includes both closed and open-back headphones, but this the first semi-open headphone I have experienced. Ehh, nothing crazy in the sound stage. However, the sound of the headphones is a remarkable experience.
Crisp highs, deep bass, balanced mids. At first, they don't produce a good sound stage. I strongly recommend replacing the stock earpads. This is mostly due to the shallowness of them closing off the semi-open experience but they also aren't very comfortable. Not nearly big enough for my average sized ears and kinda cheap feeling, definitely not crazy expensive pleather used in these. Once I got some Brainwavs XL earpads along with some Dekoni Attenuation rings, these headphones really came to life. Not to say they are bad out of the box because they aren't, they're glorious. But with a wider soundstage from the earpads they truly shine.
The only problem with the sound is that it may not be everyone's cup of tea. It is definitely bass heavy. These aren't bass-cannons like Beats, but the bass is on the heavy side. However, I enjoy this because I mostly listen to EDM regularly, with some classic rock, jazz, and folk on the side. So this sound signature fits in well to my music taste. These aren't reference by any means. They are meant for enjoyment! And enjoy them you shall if you if this is your mindset going in. These are easily the most fun headphones out of my small collection (Audio Technica ATH-M50, ATH-M40x, Philips Fidelio X2, Fidelio L2).
My only long term concern may be in the build quality, which is why I've docked a star. They don't feel or look cheap OVERALL. The purpleheart wood looks beautiful on the ear cups. The signature Fostex roundness of the phones looks signature. The drivers are of long-standing quality. The plastic doesn't feel cheap on the band or the connectors to the cups. It comes with a great cable and the 1/4" termination feels and looks hefty. The only concern lies in the entirety of the headband. It is wrapped in what I assume is pleather, but what's inside feels like a cheap piece of plastic with foam most likely glued to it. It is not strong. It would be very easy to rip these in half or permanently damage the natural shape of the band.
But overall, not a single bit of buyer's remorse. You probably won't have any either if you truly enjoy the signature of them.