When I had the headphones open all excited and connected my expectation was huge. I had a degree in audio book and have my Sennheiser earbuds replaced by the Bayer Dynamic and was appalled at this moment. That sounded tinny and trötig and dull. The timbres were gotten out of hand and nothing, absolutely nothing seemed to justify the high price. Remembered something about the sound of entertainment systems in airplanes, where the ends of tubes inserted in their ears and the actual speaker is hidden somewhere in the back. But I have the headphones granted some time and somehow made the hearing, after a long time more fun. So reason enough times it with music to try. (About a headphone amplifier of NuForce). Hm. That was better. Streicher had enamel and color and the drums sounded impulsive and direct. I try with the headset fairly common to hear and behold, the noble piece needs to warm up and restoring. To judge the sound as less than 20 minutes is not advisable in this handset. I suspect that the warm-up time with the time is a little shorter. But as so often with high-quality parts, you have to approach the unit carefully and get the actual reward only after some time and loving treatment. But then you can look forward to hours of fun. When writing this review, I have the Beyerdynamic T50P fetched and taken my iGrado. In a direct A / B comparison, cold T50P the difference in price is not justified - on the contrary. Because of Grado is higher resolution, warmer bass and neutral in the centers, the spatial representation is wider and less pressed. The Grado is at first more agile, lively and better everywhere. But after about 10-20 minutes of T50P begins to free itself, raises its curtain on its own and uses the space better and slow is its reproduction friendly, dynamic, detailed and more playful. The timbres come into right Lot. And music is fun. Audible I hear still prefer using earplugs because of Bayer Dynamic TP50p simply shows clearly the limits of high compression on - but that's not a mistake.