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Sennheiser.com has Sennheiser HD 660 S Open-Back Audiophile Headphones (Refurbished) for $249.95. Shipping is free.
Thanks to group member CrimsonFeather4345 for locating this deal.
Features:
Open-back dynamic reference headphones
All-new 42 mm transducer and 38 mm diaphragm
Aluminum voice coils for easy element and fascinating dynamics
Ventilated driver reduces turbulence for readability throughout your complete frequency vary
Special damping factor produced from effective acoustic steel mesh
Includes removable ¼-inch (6.3mm) single-ended and 4.4mm balanced cables
Lightweight, timeless design and cozy velour pads for hours of fatigue-free listening
Acoustic elements manufactured and assembled to tightest tolerances for optimized efficiency
Impedance: 150 ohms
Frequency response: 9 – 41,500 Hz
Total harmonic distortion: <0.04%
