This is one of the most masterpiece headphone that didn't die forever, didn't change any single part yet it sounds new it lasted long, great bass, great sound, very high fidelity not even single distortion and no poor clarity thanks to Sony for making this most wonderful masterpiece headset that will cost a million dollar than today's crappy expensive headphones they are B&W, Bose, JBL....etc. If you compare other headphones like I mentioned today's expensive headphones like B&W, JBL, Bose, Sennheiser....etc they die easily and sound gets distorted...