Sennheiser HD 650 Open Back Professional Headphone
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Feature
Specially designed acoustic silk ensures precision damping over the entire frequency range and helps to reduce THD to an incredible 0.05%Improved frequency response is 10 - 39,500 Hz (-10 dB)
Hand-selected matched driver elements
High power neodymium magnets deliver maximum efficiency
Lightweight aluminum voice coils for very fast transient response