The hype is real but so is its performance.
The Philips Fidelio X2's are one of my favourite headphones. There are so many good things to say about this pair. Let's go down the list.
The sound stage is amazing. It's got the widest sound stage of all the headphones I own. The width of the sound stage is extended, although it doesn't sound/feel unnatural. It helps emphasize stereo separation and sound placement.
Frequency Clarity & Separation:
Highs, mids, and bass frequencies all render clearly. The frequencies don't bleed into each other. Even though there's only one big driver in the each of the cups, it sounds like the highs, the mids, and the bass each have their own dedicated drivers. That's how clean these sound.
Air, Sparkle, Punch, Thump, and Boom:
The high extension is awesome. There is plenty of sparkle and air in the highs and they are clear without sounding too cold thanks to the mids. The mids bring some of the warmth back and help ground the high frequencies. It's punchy with no muddiness. On the low end, it rumbles. The bass is really, really good.
The headphone caliper pressure is perfect. It doesn't squeeze your head so hard that you'll pop a blood vessel. It feels secure. There are no adjustments for size. Instead it has a flexible band that rests on your crown that is super comfortable. The pads have a nice texture and are soft. The weight is hard to quantify. For me, it's not heavy at all and I've gone on long sessions without fatigue.
Premium. Enough said.
Real world application:
The frequency response isn't super flat. I would describe it as "excited". So, it's perfect for enjoying all sorts of media but probably not great for mixing and reference. Movies, specially ones with big explosions, sound awesome with these headphones. They're great for all types of music. I really enjoy using them for gaming as well.