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Sennheiser HD 660s

alaTest has collected and analyzed 9 reviews of Sennheiser HD 660s. The average rating for this product is 4.6/5, compared to an average rating of 4.0/5 for other Headphones for all reviews. Views about the soundstage and usability are overall positive. The price and comfort also get good feedback. There are some mixed opinions about the size, while some have doubts about the portability.

sound, comfort, price, usability, soundstage


We analyzed user and expert ratings, product age and more factors. Compared to other Headphones the Sennheiser HD 660s is awarded an overall alaScore™ of 97/100 = Excellent quality.

Review analysis

(Based on 9 reviews)

Expert Reviews  

User Reviews  

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Expert review by : Andrew Williams (

Sennheiser HD 660 S


Sennheiser HD 660 S review: Comfort and great sound quality make these excellent at-home headphones.

Great soundstage ; Comfortable ; Dynamic and involving

Value enjoyment over tonal neutrality a little

Comfort and great sound quality make these excellent at-home headphones.

Dec, 2017

Expert review by : Sasha Muller (

Sennheiser HD 660 S: A classic headphone, reimagined


Sennheiser revives a classic design and this is one of those rare moments where some people will prefer the remake to the original

Just like one of the great Hollywood remakes, the HD 660 S has tried to improve on near perfection, and to its credit it has almost succeeded – but as ever, some people will just always prefer the original.

Jun, 2018

Product Specifications


Color of product:Black
Wearing style:Head-band


Acoustic system:Open
Driver type:Dynamic
Ear coupling:Circumaural
Headphone frequency:10 - 41000
Headphone sensitivity:104
Total Harmonic Distortion (THD):0.04

Packaging Data

Audio adapters included:6.3 mm
Package type:Box

Ports & interfaces

1/8" connector:Y
2/32" connector:N
Connectivity Technology:Wired
USB connectivity:N

Weight & Dimensions

Package depth:4.25
Package height:12.6
Package width:10.1