The open-back design and ultrasoft velour earcups of these over-ear headphones ensure extreme comfort during extra-long sessions, and perfectly channel-matched drivers within ±1 dB provide a truly intimate, high-fidelity listening experience. The HD 660S2 comes with two detachable cables in 1/4" unbalanced and 4.4mm balanced flavors, and the headphones also include a handy 1/4" to 3.5mm adapter and a convenient carry pouch.
Extension on the low-end changes everything by creating more space for the sound. Against a deeper backdrop, highs feel more brilliant, the soundstage deeper, and the emotions stronger.
The open-back design gives your ears an extremely comfortable climate, even for super-long sessions, and the low total weight and ergonomic headband rule out any potential discomfort. Combined with excellent Irish build quality, the listening experience is as physically pleasing as the warm, non-fatiguing sound at its heart.
This new coil also provides higher magnetic force and electrical dampening for cleaner impulse response. The surround is also more compliant, dropping the resonant frequency to 70 Hz. All together, these measures result in even greater precision, speed, and resolution, with double the sound pressure at the lowest frequencies.
- Optimized airflow around the transducer, decreasing air leakage and increasing low-frequency acoustic pressure
- Lightweight Duofol aluminum voice coils with 300-ohm impedance for better electrical damping and improved detail retrieval
- Twice the sound pressure than previous models at 20 Hz, improving the impact of percussion and electronic music
- Stronger response above 5 kHz for more perceived clarity, smoother response for more natural reproduction
- Uniquely powerful vented magnet system for minimized distortion
- 38mm high-performance dynamic drivers
- Steel mesh baffle for less permeability and increased but natural bass response
- Excellent balance and superior imaging through matched acoustic systems