Sennheiser HD 660S2 | A Legend Reborn, An Immersive Bass Experience for Audiophiles
Feel every detail of the music, deeper than ever before.
The Sennheiser HD 600 series has long been hailed as a benchmark for audiophiles. The new Sennheiser HD 660S2 inherits this legendary lineage and features a revolutionary optimization of its predecessor's low-frequency performance. We listened to the community and doubled the sound pressure of the sub-bass, delivering a more impactful and emotionally engaging listening experience. This open-back headphone, designed for discerning ears, not only retains the series' renowned precision and warm tone but also, through an improved 300-ohm high-impedance headphone driver, allows you to enjoy deep bass without missing a single musical detail. It is the top choice for audiophile headphones for those pursuing ultimate sound quality.
From design to manufacturing, every aspect of the HD 660S2 is meticulously crafted in Germany, ensuring unparalleled quality and durability. Whether it's delicate vocals, complex instrumental arrangements, or powerful movie soundtracks, the HD 660S2 faithfully reproduces them with stunning resolution and dynamic range, delivering an immersive auditory feast.
Product Features
- Deep and Accurate Bass: Sub-bass response is significantly enhanced, extending down to 8 Hz, with double the sound pressure at 20 Hz compared to its predecessor, providing unprecedented impact and clarity.
- New 38mm Dynamic Drivers: German-made high-performance drivers featuring an improved, ultra-light aluminum voice coil and an increased impedance of 300 ohms, delivering faster transient response and detail retrieval.
- Optimized Airflow System: A unique vented magnet system minimizes air displacement and distortion, improving the precision of the impulse response to ensure pure and natural sound.
- Exceptional Wearing Comfort: Luxurious velour earpads and a low-pressure headband design ensure comfort without pressure, even during long listening sessions, allowing you to be fully immersed in the music.
- Audiophile Connectivity Options: Includes two 1.8-meter detachable cables with standard 6.3mm and balanced 4.4mm Pentaconn plugs to meet the needs of various high-end audio equipment.
- Exquisite German Craftsmanship: Designed in Ireland and made in Germany, every detail reflects Sennheiser's ultimate pursuit of quality, ensuring the product's durability and exceptional performance.
THINK2 Warranty & Support
- Fast Shipping: In-stock items will be shipped within 24 business hours.
- Professional Technical Support: Our certified audio engineers provide consultation for installation, licensing, compatibility, and setup.
- Comprehensive Warranty & After-Sales Service: Includes both manufacturer warranty and THINK2 customer support.
※ Shipping times are calculated based on business days. Actual warranty follows the manufacturer’s policy. THINK2 provides integration and support assistance.
THINK2 Warranty & Return Policy
- With valid proof of purchase and product serial number, customers are entitled to manufacturer warranty and THINK2 after-sales service.
- DOA / Non-human defects: Within 7 days of purchase, after verification, customers may request return or replacement.
- Exclusions: Damages from misuse, unauthorized modification, consumable parts, natural disasters, or improper use beyond instructions.
- Application Process: Contact customer service during business hours for return instructions.
- Service Coverage: Taiwan region primarily; overseas based on logistics standards.
