Sennheiser - HD 660S Open-Back Dynamic Over-Ear Reference Headphone

OPEN-BACK STUDIO HEADPHONES

The perfect combination of power and control, the HD 660S is a powerful open-back headphone with the versatility to connect you to the deepest corners of your music collection.
Features
Pad type: Circumaural
Transducer principle: Dynamic, open
Frequency response: 9 – 41,500 Hz
Sound pressure level (SPL): 104 dB
THD, Total Harmonic Distortion: < 0.04%
Contact pressure: 6.0 N ± 1 N
Nominal impedance: 150 Ω
Color: matte black
Weight: 260 g