Instrumental music is taken to a greater level with the HD 650 headphones, which excel with their authentic reproduction of strings and wind instruments, for example. The top notes are pleasantly natural yet the lower notes are clear and vibrant.
In the HD 650, audiophiles will experience truly unique natural sound. With sound this good, long concerts in the comfort of your home are a certainty, as the HD 650 also set standards in comfort and convenience. The HD 650's are a genuine masterpiece, which will satisfy even the most demanding listener. HD 650 - the Reference Class.
Perfect in every detail. The experience Sennheiser gained in designing the legendary Orpheus headphones has been incorporated into the HD 650. They are superbly well balanced with crisp bass, excellent mid frequency response and a gentle, pleasantly natural treble. The HD 650 are the first dynamic headphones with such authentic and natural sound reproduction, both accurate and transparent.
The technology is innovative, and the workmanship immaculate. A specially developed acoustic silk ensures uniform precision damping over the entire frequency range and reduces harmonic distortion to an incredible 0.05%. The headphones are fitted with hand-selected, close-tolerance systems and the computer-design techniques have been used for the neodymium magnet system geometry to reduce intermodulation and harmonic distortion to a previously unattainable level.
The extremely lightweight aluminum voice coils ensure an extremely fast transient response; while neodymium iron magnets ensure maximum efficiency. The diaphragm was designed using simulation technology. The design has a refined titanium-silver finish and the ear-pieces feature 62% open metal mesh covers. The high-quality oxygen-free copper (OFC) cable was specially developed for the HD 650. It is extremely resilient thanks to its Kevlar fiber reinforcement, creating the perfect link with minimum sensitivity to handling noise.
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