Korpa 
The open, dynamic HD 515 is a classic all-rounder and an affordable entry point into the audiophile 500 Series. It is fitted with Sennheiser’s innovative E.A.R technology, ensuring that the sound is accurately channelled into the ear. Overall listening pleasure is combined with outstanding wearing comfort.
- Enjoy music in a completely new way: “Eargonomic acoustic refinement” (E.A.R.) design channels the audio signal directly into your ears
- Advanced Duofol diaphragm technology almost eliminates standing waves inside the capsule
- Optimized neodymium ferrous magnet systems
- Outstanding wearing comfort for long listening sessions
- Long life due to easily replaceable parts
- Lightweight aluminium voice coils for high efficiency and excellent dynamics
- Extremely comfortable, soft, crackle-free ear pads
- Bass reproduction below the human audibility threshold (15Hz)
