Sennheiser HD 660S2 Open-Back Dynamic Headphones
4.5 (754) · € 204.00 · En stock
Sennheiser improves on a legend with the HD 660S2 Open-back headphone, bringing stellar German design, intimacy and precision, non-fatiguing sound, and the deep, accurate sub bass you've been wanting.
Dive Deeper into Legendary Sound with the Sennheiser HD 660S2 Open-back
Open-Back, Dynamic, Over-ear Headphones with High Fidelity sound
Ultra-light aluminum voice coil with 300Ω impedance for excellent impulse response
Uniquely powerful vented magnet system for minimized distortion
Outstanding quality designed in Germany, made in Ireland
Intimate and precise yet non-fatiguing sound with great timbre and deep, accurate sub bass
Plush ear cushions and open design for maximum comfort
Bloom's Take
Some Sennheiser cans are in stores for decades. But the HD 660S2 follows closely on the heels of the original, offering the same frame with subtle updates to its look and sound.
The HD 660S2 opts for a smaller retail box with no fancy case and still provides 6.3mm and 4.4mm cables, albeit they are welcomingly shorter. Regarding sound, expect detail, clarity, and a natural timbre along with good air, and solid treble extension. Yep, that's largely true of its HD 600 brethren, but the S2 differentiates with deeper, more linear bass extension.
We feel that most of Sennheiser’s recent innovation hasn't come in massive changes but rather in incremental changes with subtle improvements over the predecessor. In the case of HD 660S2, the subtle tweaks to the tuning provide a clear improvement, crowning it the best sounding and performing HD600 series headphone Sennheiser has created thus far.
Read the full review here.
Dive Deeper into your Music
Enjoy your music on a completely new level. An intimate, relaxed sound signature combines with outstanding precision and exceptional comfort — and now, extended sub bass — for a deeply moving experience. The extremely precise yet non-fatiguing sound of the HD 660S2 delivers even more impact with extended sub bass.
With an optimized surround, transducer airflow, and coil, our engineers doubled the sound pressure at the lowest octaves. You can feel the lowest note on the piano (27.5 Hz) or the kick of the bass drum (45-60 Hz) as if you were there.
The relaxed tone and open-back design make this extremely comfortable headphone great for long sessions. With warm tuning, smooth treble, and strong bass, the standard-setter for extended listening is now the standard-setter for extended bass as well.
Sub Bass Expands the Entire Sound
In doubling the sound pressure at the lowest frequencies, we’ve retained extraordinary precision and balance throughout the sub-bass, mid-bass, and beyond. 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 emotions stronger.
Improvement of a Legend
The revised coil of the HD 660S2 matches the 300Ω impedance of the legendary HD 600 and HD 650. 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 from 110 Hz to 70Hz. All together, these measurements result in even greater precision, speed, and resolution with double the sound pressure at the lowest frequencies.
Frequency Response Comparison
1. Between 20-200 Hz, the sound pressure level is significantly increased (twice the sound pressure at 20 Hz.) This results in a much better impact of percussion and electronic music, the most common user feedback.
2. Above 5000 Hz, overall, the response is stronger. This results in more perceived clarity.
3. Above 5000 Hz, the response is “smoother” (the difference between the louder peaks and quieter troughs is smaller.) So music reproduction is more natural, and fewer peaks mean less fatigue during long listening sessions.
They Feel as Great as They Sound
The velour earpads of the HD 660S2 can only be described as a tactile pleasure. With just the right amount of tension for proper acoustic positioning and supple padding, the headband won’t draw attention away from your music. And with open-back design, the HD 660S2 gives your ears an extremely comfortable climate, even for super-long sessions. Low total weight and ergonomic headband rule out potential discomfort .The listening experience is as physically pleasing as the warm, non-fatiguing sound at its heart.
Specifications
Transducer Principle: Dynamic, open
Transducer Size: 38mm
Frequency Response: 8 Hz - 41,500 Hz
Impedance: 300 Ω
Sound Pressure Level (SPL): 104 dB (1V)
Total Harmonic Distortion (THD): < 0.04% (1 kHz, 100dB)
Weight: 9.17 oz (260g)
Magnetic field: 2.5 mT
Sennheiser 2 Year Warranty
In the Box
Sennheiser HD 660S2 wired over-ear headphones
5.9' (1.8m) cable with 6.3mm connector
5.9' (1.8m) Balanced cable with 4.4mm Pentaconn
6.3mm (F) to 3.5mm (M) adapter
Carry Pouch
User Manual
Sennheiser HD 660S2: The Next Generation Audiophile Sound
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