2 years international warranty
30 days free return
HD 660 S 2
HD 660 S 2
HD 660 S 2
HD 660 S 2
HD 660 S 2
HD 660 S 2

HD 660 S 2

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Article number: 700240

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 airfl ow, 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.


This warm, inviting signature combined with extended sub bass makes listening uniquely pleasant and rewarding. And with comfort this good, it practically begs you to keep going for endless sessions. That’s how HD 660S2 combines the best of many worlds to give you an intimate experience you won’t want to live without.–  Natural, relaxed, high-fi delity sound with extra sub bass: Optimized surround and dia-phragm with new voice coil with 300-ohm impedance –  38mm high-performance transducers built in Ireland: Steel mesh damping follows the driver’s geometry to control air displacement, while the magnetic yoke includes milled air vents for optimal ventilation, which minimizes distortion –  Uniquely powerful vented magnet system for minimized distortion–  Ultra-light aluminum voice coil with 300-ohm impedance for excellent impulse response–  Intimate sound with great timbre and deep, accurate sub bass


Exceptional comfort and build quality: The open-back design and plush ear cushions offer exceptional breathability for long listening sessions–  The velour earpads of the HD 660S2 can only be described as a tactile pleasure–  The low total weight and ergonomic headband rule out any potential discomfort on top of your head as well. Combined with excellent build quality made in Ireland, you’ll quickly grow attached to a listening experience that’s as physically pleasing as the warm, non-fatiguing sound at its heart.– 

Global 2-year warranty offers peace of mind for your audio equipment investment.

Customer Reviews

Based on 6 reviews
Andrew Trusson

Really nice sound. Comfortable too. Pleased
with my purchase.Excellent customer service.

Gary Lawrence
Fantastic headphones

I have the original Senheiser HD600 and love the feel of these and sound on my head so wanted an upgrade as wanted a bit more bass and these headphones are the most comfortable and best sounding I have experienced and trust me I’ve been trying to get to my Utopia and these are the one we for me


Really lots more detail in the mid range than other studio headphones I’ve tried, high end is precise and the bass is about right. Happy to use these for mixing.

richard oliver
worthy sucessor to the hd660s

a nice headphone that i prefer to my hd660s. works well with the hdv820.

Chen Zhang
Review from a person never had a Senn before

As someone who never had a Senn before, the S2 simply matches all of my expectation of the iconic Senn sound. Enough bass but not muddy, warm mid and not fatiguing highsl, combined with wide and precise soundstage. With everything combined, the first time hearing music playing on the S2 did not surpurise me like the Hifiman Sundara or Beyer 1990pro, but I slowly enjoy music on the S2 more than i did on the Sundara or Beyers. However, I do wish the mids to be a little foward and bright.