Sennheiser - HD 800 S Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers, Open-Back Earcups, with Balanced Cable - Black - Open Box - Excellent

Despite the HD 660S’s standing as one of the world’s popular audiophile headphones, some customers nevertheless wanted one very specific enhancement: even deeper bass. Because whether it’s a thunderous crescendo of timpani or the pulsating beat of electronic dance music, there is nothing like accurate, powerful sub bass to infuse your listening with drama. Audiophiles—and anyone looking for comfortable, non-fatiguing, high-end headphones—can now get even more impact and emotion from the HD 660S2. The headphone’s warm, relaxed tone is reflected by their timeless styling with elegant bronze accents. With its open-back design and outstanding comfort, the HD 660S2 is also destined to be a favorite for long listening sessions. This version builds on all the strengths of its formidable predecessor. The same world-class precision and resolution still let you pick out individual instruments like with no other headphone. Or experience the joy of discovering sonic details in recordings you’ve known for years—now underscored with more and deeper low end. Indeed, the standard-setter for extended listening has now become the standard-setter for extended bass as well. Enhancing this heralded audio design without detracting from its many strengths was, however, a daunting task. So, our engineers set out to systematically identify and exploit every opportunity in their quest to improve on the acclaimed HD 660S design. We adjusted the compliance of the surround, for instance, dropping the resonance frequency to 70 Hz. Considerable effort went into optimizing the airflow around the transducer. The coil in the HD 660S2 has also been revised to match the legendary HD 600 & 650, resulting in an impedance of 300 ohms. The coil offers a high magnetic force and electrical damping for a clean impulse response. It also increases sensitivity over the entire frequency spectrum by using the magnet’s air gap more efficiently. Taken together, these efforts and more have paid off in spades. Sound pressure at the lowest octaves has doubled. Now, you can feel the music more than ever before—with all the depth and weight that ultra-low frequencies invoke. The lowest A on the piano (27.5 Hz) or the pounding root note of a bass drum (45-60 Hz) are just as big, expansive, and imposing as if they were live. The unique combination of impactful bass combined with the warm tuning and smooth treble will be a revelation for audiophile listeners. It’s an even better way to lose yourself in comfortable, non-fatiguing, high-end sound—while feeling its full low-end power.

ACCENTUM True Wireless unites an ultra-comfortable ergonomic design with Sennheiser’s signature sound, hybrid ANC, and long-lasting battery life, allowing you to immerse yourself in a premium all-day listening experience. A sleek design based on extensive ergonomic in-ear research and secure-fitting silicon ear tips guarantees exceptional, long-lasting comfort. The case provides on-the-go charging for up to 28 hours of playtime, providing uninterrupted extended listening pleasure. ACCENTUM True Wireless delivers superior sound with TrueResponse acoustic technology, crafted in-house for Sennheiser’s signature audio. The Sennheiser Smart Control App lets you customize your sound journey, offering a 5-band EQ, pre-set modes for amplified bass, and a tailored experience with Soundcheck. Whether on the street or riding the train, ACCENTUM True Wireless’s effective noise cancellation system takes on noisy environments, so there is no need to pause your listening. When you need to tune into your surroundings, activate Transparency Mode to hear outside sounds instantly without removing your earbuds. ACCENTUM True Wireless boasts cutting-edge wireless technology with Bluetooth 5.3 compatibility and Bluetooth LE Audio*, which allows you to discover broadcast signals with Auracast. The customizable touch interface provides intuitive audio, call, and voice assistant control. Dual mics on each earbud ensure versatile, high-quality call experiences.

Sennheiser HDB 630 Wireless Audiophile Headphones - High-Res Sound with Parametric EQ and Crossfeed, Bluetooth Headset with ANC and 60h Battery Life, Lightweight Design, Clear Calls - includes BTD 700. Flawless sound, no wires, and a battery that lasts for up to 60 hours. The Sennheiser HDB 630 lets outaketrueaudiophilesoundanywhere you go. Precision engineering brings out breathtaking clarity, a neutral tone, detailed mids, and a wide soundstage. Use aptX HD and aptX Adaptive Bluetooth® codecs from a high-resolution source such as Sennheiser’s BTD 700 Bluetooth® adapter or plug in via USBC for pure fidelity. The advanced parametric EQ lets you define frequency bands and filters as you please. Cross Fade balances classic tracks for better headphone listening while Active Noise Cancellation eliminates background noise while maintaining high-end audio quality.