Meet the new HD660S2
Sennheiser’s new HD 660S2 is an upgrade for audiophiles seeking exceptional detail with engaging low-frequency performance
Sennheiser responded to the hi-fi community's feedback, crafting a headphone that skillfully balances reference-level detail with engaging frequency response. The headphone features a more dramatic listen with greater intensity from enhanced sub-bass tuning, extracting dynamic impact and emotion from audio enthusiasts' favorite recordings. The updated acoustics offer a delightful new way to experience music all over again.
The depth and drama audiophiles crave
Improving on a beloved classic while retaining its best traits was a challenging task, starting with the lowest end of the frequency plot. The HD 660S2's warm bass characteristics pair perfectly with its silky-smooth treble performance and trademark vocal presence, allowing the timbre and uniqueness of any instrument part to stand out.
Across the entire frequency spectrum, the HD 660S2 delivers a refined listening experience thanks to improved transducer airflow and a refined voice coil. From thunderous timpani crescendos to pulsating EDM rises, even the most discerning audiophiles will notice the depth and nuance of low-frequency passages, adding dramatic flair to any type of music. Ultimately, listeners are treated to deeper, clearer bass without sacrificing the expansive detail the series is known for.
A fit for the long haul
Designed in Germany and manufactured at Sennheiser's state-of-the-art Ireland production facility, the HD 660S2 continues the series' emphasis on quality, functional design using materials that contribute to the hi-fi experience. Plush earpads and cushy headband padding place the revised 300-ohm transducers at the optimal distance from the ear resulting in a spacious soundstage with an abundance of detail -- even for extended musical exploration. The transducer surround drops the resonant frequency from 110 Hz (original HD 660S) down to 70 Hz for hefty kick drums that move with ease. Even the outer mesh grilles are crafted to manage airflow at the ideal impedance for exquisite open-back listening sessions.
