1. comfort: first class tested for several hours by train 2. sound isolation: without NoiseGuard remarkable shielding 3. Sound: Sensational balanced 4. Tested on newly acquired FiiO X3 (also highly recommended) and the Cowon D 2. Good old Cowon held thanks to the headphones with remarkably well. Tested 320 OGG, FLAC and Youtoube Conversion: formats
Conclusion: A headphone upgrade brings much more than a better player.