Pros
Excellent sub-bass performance
Wide soundstage and excellent instrument separation
Balanced, warm sound suitable for various music genres
Comfortable for long periods
Nimble, non-fatiguing treble
Scales well with good sound equipment
Great for immersive video games
Exceptional clarity and spatial imaging
Premium build quality
Removable padding for easy cleaning or replacement
Cons
Overpriced at the MSRP of $600
Requires a dedicated headphone amplifier and DAC for best performance
Niche use-case, not suitable for traveling, office use, or gaming
Main Product Advantages
9 Sound Quality
Exceptional sound quality with deep sub-bass, clear mids, and non-fatiguing treble. Wide soundstage with excellent instrument separation.
9 Bass Performance
Sub-bass is deep and tight, providing a full and satisfying low-end response.
8 Comfort
Soft earpads and optimal clamping force provide long-lasting comfort. Suitable for larger heads, but can feel tight initially.
8 Build Quality
High build quality with premium materials, though the stock cable tends to degrade over time and may need replacement.
8 Aesthetic Design
Modern and sleek design, visually appealing with sturdy construction.
7 Versatility
Great for various music genres and immersive video games, but not suited for portable use due to open-back design and lack of noise isolation.
7 Imaging and Soundstage
Good depth and height in the soundstage but not as wide as some competitors. Imaging is precise and well-defined.
6 Value for Money
Highly recommended when bought on sale (~$400), but considered overpriced at MSRP ($600). Some users feel competitor models offer similar performance at lower prices.
6 Target Audience Suitability
Best for audiophiles and critical listeners who value sound quality over portability. Not ideal for mobile or office use due to the need for additional equipment.
5 Driving Equipment Requirement
Requires an amplifier and DAC to reach full potential, adding to the overall cost. Not ideal for those without additional audio equipment.
Product Review: Sennheiser Consumer Audio HD 660S2
The Sennheiser Consumer Audio HD 660S2 is an audiophile’s dream, offering a natural, relaxed, high-fidelity sound. Its ultra-light aluminum voice coil with a 300-ohm impedance ensures excellent impulse response and intimate sound quality with an impressive timbre. The extra sub bass will please bass enthusiasts, providing a deep, rich low end that is both impactful and immersive.
Airflow-Optimised Transducers
The 42mm high-performance transducers are airflow-optimized, significantly reducing distortion. The uniquely powerful vented magnet system enhances ventilation, while the steel mesh damping controls air displacement. This technology ensures clarity and precision, allowing listeners to experience music as intended by the recording artists.
Enhanced Low Octave Sound Pressure
The HD 660S2 delivers double the sound pressure at the lowest octaves. The ability to feel the lowest notes on a piano (27.5 Hz) or the kick of a bass drum (45-60 Hz) is remarkable, making the listener feel as though they are in the recording studio. This feature elevates the listening experience, providing an authentic and dynamic sound.
Exceptional Comfort and Build Quality
Designed with comfort in mind, the open-back design of the HD 660S2 offers excellent breathability. The plush ear cushions contribute to maximum comfort, making long listening sessions enjoyable without discomfort. The headphones are also built with outstanding quality, a hallmark of Sennheiser's design ethos. Crafted in Germany and made in Ireland, they exhibit durability and attention to detail.
Conclusion
In conclusion, the Sennheiser Consumer Audio HD 660S2 headphones are a stellar choice for audiophiles seeking high-fidelity sound with an enhanced bass experience. With superior comfort, build quality, and advanced technological features, these headphones deliver exceptional audio performance and are well worth the investment for serious listeners.
