Sennheiser - HD 650 - Audiophile Hi-Res Open Back Dynamic Headphone - Serious Techies

The HD 650 Headphone experience truly is an unique natural sound. With sound this good, long concerts in the comfort of your home are a certainty.

• Specially designed acoustic silk ensures precision damping over the entire frequency range and helps to reduce THD to an incredible 0.05 percent
• Improved frequency response is 10 39,500 Hertz ( 10 dB)
• Hand selected matched driver elements; Highly optimized magnet systems for minimum harmonic and inter modulation distortion
• High power neodymium magnets deliver maximum efficiency; 3.5 millimetre jack plug. Frequency response (Headphones):10 41000 Hz
• Lightweight aluminum voice coils for very fast transient response