HD660S2
About the Product
Sennheiser HD 660S2 Open-Back Audiophile Headphones
Connect more deeply with your music through the Sennheiser HD 660S2. These wired open-back headphones combine a warm, natural presentation with extended sub-bass, precise detail and comfortable velour cushions for immersive home listening.
Why Buy Sennheiser HD 660S2?
- Enjoy deeper bass: Extended sub-bass brings weight and depth to low notes.
- Hear expressive vocals: An intimate presentation captures the character of voices and instruments.
- Discover finer details: Refined transducers deliver precise, low-distortion playback.
- Listen comfortably: Plush velour ear pads and a padded headband support longer sessions.
- Connect to your preferred setup: Standard 6.3mm and balanced 4.4mm cables are included.
Warm Sound with Extended Sub-Bass
The HD 660S2 delivers deep, accurate bass alongside natural mids and a relaxed presentation. From the resonance of a piano to the lowest notes of a bass guitar, its low-frequency extension adds depth while preserving musical detail.
Precision for Focused Listening
A vented magnet system and lightweight aluminium voice coil help control driver movement and minimise distortion. Enjoy clearly resolved textures as you explore familiar albums and new recordings.
Comfortable Open-Back Design
Soft velour cushions surround your ears, while the open earcups provide ventilation.
Best enjoyed in a quiet room: The open-back design allows outside sound in and lets your music be heard by people nearby.
Flexible Connections for Your Hi-Fi System
Two 1.8m detachable cables accommodate standard 6.3mm and compatible balanced 4.4mm headphone outputs. A 3.5mm adapter is also included.
For its 300Ω impedance, choose a headphone amplifier or DAC/amp with sufficient output for comfortable volume and headroom.
Key Specifications
| Feature | Specification |
|---|---|
| Design | Wired, open-back, over-ear |
| Transducer | Dynamic |
| Frequency response | 8–41,500Hz |
| Impedance | 300Ω |
| Sensitivity | 104dB at 1kHz, 1Vrms |
| Total harmonic distortion | Less than 0.04% at 1kHz, 100dB |
| Weight | Approximately 260g without cable |
| Cable length | 1.8m |
| Connections | 6.3mm and balanced 4.4mm |
| Manufacturing origin | Ireland |
What’s in the Box?
- Sennheiser HD 660S2 headphones
- 1.8m cable with 6.3mm plug
- 1.8m cable with balanced 4.4mm plug
- 6.3mm to 3.5mm adapter
- Carrying pouch
Shop Sennheiser HD 660S2 in Singapore
Discover warm, detailed listening with Sennheiser HD 660S2 at ConnectIT Singapore. Shop online or visit our 313@somerset store for help choosing headphones and a suitable audio setup.
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