Sennheiser HD 660s Audiophile Headphones (B-Stock) - Discontinued

The open-back design allows air to pass through the ear cups, which prevents pressure buildup and creates a more natural, spacious soundstage. Because they are not sealed, sound will leak out, and you will be able to hear your surroundings, making them best suited for quiet environments.

The open-back design allows air to pass through the ear cups, which creates a more natural, spacious soundstage that mimics the feeling of listening to speakers in a room. Keep in mind that this design does not block outside noise and will allow sound to leak out, so they are best suited for quiet environments.

With an impedance of 150 Ω, these headphones benefit significantly from a dedicated headphone amplifier or a high-quality DAC. While they can be driven by some mobile devices, an amp will provide the necessary power to unlock their full dynamic range and clarity.

With an impedance of 150 Ω, these headphones benefit significantly from a dedicated headphone amplifier or a high-quality DAC. While you may get sound from a standard laptop or phone jack, an amplifier is necessary to unlock the full dynamic range and detail the drivers are capable of producing.

Yes, the HD 660S is highly regarded for critical listening and studio monitoring due to its precise, neutral, and detailed sound reproduction. Their accuracy makes them a reliable tool for mixing and editing tasks where hearing every nuance is essential.

Yes, the HD 660S is widely respected for its precise, neutral, and detailed sound reproduction, making it a reliable tool for critical listening and studio monitoring. The open-back design provides the transparency needed to make accurate mixing decisions.

No, these headphones do not feature a built-in microphone. They are designed strictly for high-fidelity audio playback, so you would need a separate microphone if you intend to use them for communication.

These headphones do not include a built-in microphone, so they cannot be used for voice calls or in-game chat on their own. You would need to pair them with an external microphone or a third-party boom mic attachment if you intend to use them for communication.

B-Stock items are typically products that have been returned, used for demonstrations, or have minor cosmetic imperfections, but have been inspected to ensure they function perfectly. They offer a way to acquire high-end gear at a lower cost while maintaining the performance standards of the original model.

B-Stock items are typically products that have been returned, used for display, or have minor cosmetic imperfections but have been inspected to ensure they function perfectly. They offer a way to acquire high-end audio gear at a lower price point while maintaining the performance standards of a new unit.

The HD 660S is designed with ergonomics in mind, featuring plush padding and a lightweight frame that distributes weight evenly. The open-back design also helps keep your ears cool, making them very comfortable for extended periods of use.

Yes, the HD 660S features a detachable cable design. This allows you to easily replace the cable if it becomes damaged or swap it out for different connector types depending on your audio setup.