Description
The HD 660S2 builds on Sennheiser’s celebrated HD 660S formula with a key upgrade: doubled sub-bass SPL that reshapes the low end without disturbing the balance up top. The result is a fuller, more physical bottom end that still preserves the clarity and instrument separation the HD 660S line is known for.
An optimized airflow system sits behind a steel mesh grille on the open back, letting the ventilated driver move with less resistance and lower distortion. Inside, an ultra-light aluminum voice coil paired with 300 ohms of impedance keeps transient response fast and precise, while the redesigned magnet air gap improves reproduction across the full frequency spectrum. A 38mm transducer handles the detail work, pulling out texture and nuance that audiophile listening demands.
Comfort gets equal attention: the headphones are built lightweight and durable, with plush, replaceable velour ear cups that stay comfortable through long sessions at the mixing desk or in a listening chair.
- Doubled sub-bass output versus the original HD 660S for a richer, more even overall sound
- Open-back design with steel mesh grille and optimized airflow for turbulence-free, natural sound
- 38mm transducer for sharp, revealing detail
- Ultra-light aluminum voice coil at 300 ohms for quick, accurate impulse response
- Lightweight, durable build with replaceable padded velour ear cups
- Detachable cable setup includes a 1/4-inch plug and a 4.4mm balanced plug, both 6 feet long, plus a 1/4-inch to 3.5mm adapter and carry pouch
Specs: Wired, open-back, circumaural fit, 38mm driver, 8Hz-41.5kHz frequency response, 300-ohm impedance, detachable 9.8 ft. straight cable, black finish, velour earpads, carry pouch included. MPN: 700240.
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