This over-ear pair is practically brand new, only a few hours on them. Great neutral sound, best for sound monitoring. Everything from the original box included – case, cable, etc.

Great review.
https://www.youtube.com/watch?v=3yoAj-PRsZ0

Some more descriptions.

• M-Series flagship model, tuned for extremely accurate reproduction and carefully crafted using key metal components for lasting durability
• Proprietary 45 mm large-aperture drivers with rare earth magnets and copper-clad aluminum wire voice coils
• Extended response accurately reproduces extreme low and high frequencies while maintaining perfect balance
• Circumaural design contours around the ears for excellent sound isolation in loud environments
• 90 degree swiveling earcups for easy, one-ear monitoring

Note: headphone stand not included.

Tags: Sennheiser, M50x, Beyerdynamic, AKG, Bose, Quietcomfort