The HD 515 is a classic headphone and an affordable entry into the audiophile 500 series. Itﾒs perfect for listening with virtually any source.The HD 515 is fitted with Sennheiser ?s innovative E.A.R.technology, plus special Duofol diaphragms that reduce unwanted resonances to an absolute minimum. Overall listening pleasure is combined with outstanding comfort.

Features:

• Open-Aire ?,circumaural,dynamic,stereo headphones
• Ergonomic Acoustic Refinement (E.A.R.)enables ideal sound
  channelling for a new kind of listening experience
• State of the art,advanced Duofol diaphragms
• Highly optimized,field-strengthened neodymium ferrous
  magnet systems
• Outstanding comfort for long listening sessions
• Longevity through exchangeable components
• Lightweight aluminium voice coils for high efficiency
  and excellent dynamics
• 2-year warranty

Specifications:

• Frequency Response: 14 - 26,000 Hz
• Nominal Impedance: 50ohms
• Max Spl: (1kHz, 1Vrms), 108dB
• Weight: 9oz
• Transducer Principle: Dynamic, open
• Thd: <0.2%

Headphones Specifications:

• Transducer Principle: Dynamic, open
• Weight Wo Cable: 9oz
• Characteristic Spl: 104dB
• Ear Coupling: Circumaural

Connectors:

• Connector: 6.3mm stereo jack with 3.5mm adapter(both gold plated) 10ft cable, (OFC), single-sided, changeable

• Data Sheet