Audiophiles rejoice — Sennheiser HD 660 S Headphones are currently 40% off


Many Black Friday deals started early this year including one of the best Sennheiser Black Friday deals we’ve seen yet. The HD 660 S is one of the company’s more affordable high-end headphones, but they’re currently $200 off, making them far more easy on the wallet. 

So what makes these headphones so awesome? They are over-ear, open-back headphones. This design allows them to sound more natural with clearer sound quality. What’s more, they offer incredible bass, midrange, and high frequencies for one of the deepest listening experiences you can get. 

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Sennheiser HD 660 S Headphones Specs
Category Info
Frequency response (speaker) 9 Hz – 41,500 Hz
Sound pressure level 104 dB (1 V)
Impedance 150 Ω
Total harmonic distortion < 0.04% (1 kHz, 100dB)
Transducer principle dynamic, open
Ear coupling circumaural


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