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Sennheiser HD 660 S

26 ratings

Headphones

Sennheiser Audiophile Range
New transducer system developed by Sennheiser
Circumaural
Open
Dynamic
Cabling from both headphones
Max. sound pressure level: 104 dB SPL @ 1 kHz, 1V RMS
Impedance: 150 Ohm
Frequency range: 10 - 41,000 Hz
Total harmonic distortion at 1 kHz < 0.4%
Weight: 260 g
Various cables included

Further Information

Design	Over-Ear
System	Open
Impedance	150 Ohms
Frequency range	10 Hz – 41000 Hz
Adapter	Yes
Replacable Cable	Yes
Marrone/Argento	Black

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26 Customer Ratings

5

22 Customers

22 customers have given this product a 5-star rating.

Of these, 18 customers have written no texts or given their feedback in another language.
4

3 Customers

3 customers have given this product a 4-star rating.

Of these, 3 customers have written no texts or given their feedback in another language.
3

1 Customer

One customer has given this product a 3-star rating.

No customer has written a text about this; or they have written a text in a different language.
2
1

4.8 /5

sound
comfort
quality

Immersive and detailled

Madelyn, 05.02.2021

I bought this pair of headphones as a step up from a lower price bracket. I also own modded Fostex T50RP and Hifiman HE400i 2020. They were bought for home music enjoyment and I have been listening with them on an Ifi Zen Can and Schiit Magnius amplifiers. On both I find the sound extremely immersive - feeling like it is all around me, with enough separation to give interesting and absorbing detail but not a great deal of width. I am finding the most fun listening to rock and metal on the warmer Ifi which to my ear these headphones work particularly well with. Classical music can feel a bit heavy and claustrophobic on these for me but is still very enjoyable for the right composers!

Comfort is excellent even though the clamp is a little strong. I am not sure I'd want to wear them for too many hours. Even though they are open back they feel very enclosing.

They feel extremely well built, not heavy, and with a sleek, spare design. The pads are soft, and pleasantly textured. The whole headphone feels good to the touch and the materials refined and reasonably sturdy . The biggest drawback for me was the included cables being so long. If you listen at a desk be prepared to need to buy an alternative set.

I like them, a lot. They do demand that they be listened to so maybe less suitable for chilling out but for active listening they are wonderful. Very happy with my purchase and I would recommend the HD 660s to anyone looking for a (slightly) warmer, detailed and exciting headphone.

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Great headphones, a little too hifi

The o'l razzle dazzle, 09.12.2020

So i went for these as my new main mix headphones, because they have the 700 series driver with 600 series casing. Sound is clear, emphasising mids and highs. The sound is not as flat as i would desire, so coming from ns10-s i tend to scoop mids and boost highs more than is neccesary.

Combined with a crossfeed aux these are an amazing tool. And great for regular listening. If the sound was flat it would be my only mixing option, but for now il keep on referencing on other monitors.

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Outstanding Quality All Round

LittleKing, 28.06.2020

As a birthday gift for myself, I puchased these alongside a Focusrite Scarlett Solo and an AT2035. While certainly on the more expensive side, I went with these because of their relatively low impedance level (the Solo can only power phones up to 200 Ohms).

I would have to get incredibly nit-picky to find faults with the 660 S. The build is solid as a rock; they rest comfortably on my head for hours, which is helped by their open design; the presence and the space of the sound when listening to proper music or watching Blu-rays is incredible.

Certainly, matter of comforts and the type of sound you want are subjective. But these headphones are undeniably well-crafted. The only 'con' I suppose I could provide would be the price. However, you definitely get what you pay for here.

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Brilliant sound, needs stretching out to be comfortable

Bobpants, 11.06.2020

The sound is amazing, although this is my first audiophile range headset, so all I have to compare it to are my Sony MDR-1000X. They're not the most comfortable for long periods of time though, with the clamping force.

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$399

The shipping costs are calculated on the checkout page.

Available immediately

Available immediately

This item is in stock and can be dispatched immediately.

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sales rank in this product group	10
at thomann.de	2025

item number	471756
sales unit	1 piece
available since	September 2019

Total Rating
sound
comfort
quality

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* The prices shown exclude VAT and are valid as long as stocks last. Please click here for international shipping rates. Goods subject to custom declaration; customer fees to be paid on delivery if applicable. We do not accept liability for typographical errors or inaccurate information of any kind. All invoices will be issued in USD.

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	35% bought this exact product Sennheiser HD 660 S Available immediately Available immediately This item is in stock and can be dispatched immediately. Standard Delivery Times	$399 Add to Basket
	17% bought Sennheiser HD-650	$339
	10% bought Sennheiser HD-600	$315
	8% bought the t.bone HD 200	$20.30
	5% bought AKG K-712 Pro	$225
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Sennheiser HD 660 S

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