A benchmark for total audio immersion.

The HD 650 reproduces the subtle details in your music with the same confidence as the highlights.

The HD 650 from Sennheiser are reference-class stereo headphones designed to deliver a true audiophile experience with an open, natural sound. Specially developed acoustic silk was used to provide uniform attenuation over the entire area of each ear-cup. The lightweight aluminum voice coils ensure a remarkable transient response, while the full-range drivers offer a frequency response of 10 Hz to 39.5 kHz. Great care was taken to ensure the headphones are comfortable with their elliptical design, which naturally adapts to the shape of the ear.

The HD 650 utilizes a 3m detachable cable made from a highly conductive OFC copper with low handling noise and low structure-borne sound sensitivity. The headphones can be used with high-output mobile devices and excel with high-quality stationary hi-fi components. The HD 650 ships with the detachable cable and a 1/4" to 3.5mm adapter.

Highlights

• Top-of-the-range open, dynamic hi-fi stereo headphones
• Systems with narrow tolerances (±1 dB), hand-picked in pairs
• High-quality titanium / silver finish
• Specially developed acoustic silk for precise, uniform attenuation over the entire area
• Specially modulated connecting cable (detachable) made from highly conductive OFC copper, with very-low handling noise
• Extremely lightweight aluminum voice coils ensure excellent transient response
• Comfortable to wear due to elliptical design adapted to the shape of the ears
• Can be directly connected to stationary hi-fi components of the highest quality
• The (high) definition of smooth
• Expertly balanced acoustics, luxurious construction and timeless design.

The HD 650 has all of the perks of a high-performance sports car and none of the quirks. This open-back headphone is beloved by audiophiles for its musical, non-fatiguing sound while still offering intimate levels of detail. Upon the first note, your favorite tracks reveal their true potential, and each moment of that performance becomes an opportunity to react all over again. For the hi-fi enthusiast that prioritizes engaging sound quality the HD 650 is an instant upgrade.

The (high) definition of smooth

Expertly balanced acoustics, luxurious construction and timeless design.

The HD 650 has all of the perks of a high-performance sports car and none of the quirks. This open-back headphone is beloved by audiophiles for its musical, non-fatiguing sound while still offering intimate levels of detail. Upon the first note, your favorite tracks reveal their true potential, and each moment of that performance becomes an opportunity to react all over again. For the hi-fi enthusiast that prioritizes engaging sound quality the HD 650 is an instant upgrade.

Made with more in mind

Combines the best of modern transducer manufacturing with the attention to detail required to handle a wide variety of acoustic materials.

Made in Ireland at a state-of-the-art production facility, the HD 650 delivers more: more details discovered, more musicality, and definitely more time for blissful listening. Our production tolerances are extremely tight, ensuring that your HD 650 experience is consistent with those all over the globe, whenever or wherever it was purchased. For example, the resonators feature stainless steel mesh to guarantee uniform performance after manufacturing. Even better, most parts on the HD 650 are modular, making them a dream to keep as your go-to hi-fi playback headphones for as long as you cherish them. From the velour pads to the earcup grille pattern, each component was crafted to guarantee a next-level personal sound experience so you can enjoy your music even more.

It's all about connection

Comes with a detachable, impedance-matched cable, stereo connector with audiophile-standard plug and premium adapter.

Your HD 650 comes with a detachable, impedance-matched cable with ultra-low capacitance. The ¼-inch / 6.3mm stereo connector offers the audiophile-standard plug for connection to devices such as headphone amplifiers and A/V receivers, digital audio players, analog gear, and more. At 9.8 feet / 3m long, it offers unencumbered listening on gear deep within your shelves or in a favorite listening chair. A premium adapter is included to reduce the 6.3mm to 3.5mm / ⅛-inch for plugging into countless other audio devices.