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Sennheiser HD 660S2
Facts:
149 Specifications & 15 Highlights
Thinking of upgrading your setup? The Sennheiser HD 660S2 brings 149 specs & features to the table — including killer features like general information, dimensions & weight, materials & build & audio performance.
A fast snapshot of the Sennheiser HD 660S2, covering its standout specification and what you can expect right out of the box.
Sennheiser HD 660S2
The Sennheiser HD 660S2 delivers precise audio reproduction with a wide soundstage. These open-back audiophile headphones are ideal for critical listening at home or in a studio.
Specifications & Facts
149
Specs measured. Drama avoided.
What makes the Sennheiser HD 660S2 tick? Dive into all 149 features including general information, dimensions & weight, materials & build & audio performance, and see how it stacks up to the best in headphones — by community votes.
General Information
16
Sennheiser HD 660S2
Detachable Cable
Does it have a detachable cable?
Yes
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The cable is detachable, making it easier to replace in case of damage and offering options for cable upgrades.
Cable can be detached for replacement or portability.
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Replaceable Earpads
Are the earpads replaceable?
Yes
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The earpads are replaceable, allowing users to swap them out for comfort or wear over time, extending the headphones' lifespan.
Indicates if ear pads can be replaced.
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Replaceable Headband
Is the headband replaceable?
Yes
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The headband is replaceable, which supports long-term use and easier repairs or style changes.
Indicates if headband can be replaced.
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Product Name
What is the product name?
0
Sennheiser HD 660S2
0
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Sennheiser HD 660S2
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The official name of the headphones.
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Release Year
What is the release year?
0
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2023
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Year the headphones were first released.
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Warranty Period
What is the warranty period?
0
Sennheiser HD 660S2
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2 Years
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Duration of manufacturer’s warranty.
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Intended Use
What is the intended use?
0
Sennheiser HD 660S2
0
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Music
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The primary intended application for the headphones.
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Headphone Type
What type of headphones are these?
0
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Over Ear
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The general type of headphones.
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Form Factor
What is the form factor?
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Wired
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The main physical form factor.
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Fit Style
What is the fit style?
0
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Open Back
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The fit and enclosure style of headphones.
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Age Group Recommendation
What age group is recommended?
0
Sennheiser HD 660S2
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Adult
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Recommended age group for product use.
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Limited Edition
Is it a limited edition?
No
0Votes
Sennheiser HD 660S2
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Shows if product is a limited edition release.
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Country of Origin
What is the country of origin?
0
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Ireland
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Country where the product was designed or manufactured.
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Foldable Design
Do they have a foldable design?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones can be folded for storage.
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Replaceable Cable
Is the cable replaceable?
Yes
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Indicates if cable can be replaced with another.
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Certification Standard
What certifications are included?
0
Sennheiser HD 660S2
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CE, RoHS
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Compliance standards product meets.
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Dimensions & Weight
15
Sennheiser HD 660S2
Weight
What is the headphone weight?
0.57
lbs
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The headphones weigh 0.57 lbs (0.26 kg). This weight allows for comfortable use over extended listening sessions.
Overall headphone weight without packaging.
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Cable Length
What is the cable length?
5.91
ft
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The cable length is 5.91 feet (1.8 meters), offering enough length for comfortable use without feeling restricted.
Length of the audio cable for wired use.
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Width
What is the width of the headphones?
7.87
inch
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The headphone width is 7.87 inches (20.0 cm), giving an idea of how wide the headphones are from earcup to earcup.
Overall horizontal measurement of the headphones.
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Depth
What is the depth of the headphones?
3.94
inch
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The headphone depth measures 3.94 inches (10.0 cm), which indicates the thickness of the headphones.
Front-to-back measurement of the headphones.
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Height
What is the height of the headphones?
9.45
inch
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The headphone height is 9.45 inches (24.0 cm), describing the vertical dimension of the headphones themselves.
Vertical measurement from top to bottom.
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Package Width
What is the package width?
10.63
inch
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The package width is 10.63 inches (27.0 cm), relevant for shelf space or carrying case dimensions.
Width of the retail package.
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Package Depth
What is the package depth?
4.33
inch
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The package depth is 4.33 inches (11.0 cm), indicating how compact the packaging is for storage or transport.
Depth of the retail package.
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Package Height
What is the package height?
13.39
inch
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The package height is 13.39 inches (34.0 cm), demonstrating the vertical size of the packaging.
Height of the retail package.
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Package Weight
What is the package weight?
2.2
lbs
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The package weight is 2.2 lbs (1.0 kg), which includes the headphones and any accessories.
Total weight including packaging.
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Headband Width
What is the headband width?
1.97
inch
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The headband width measures 1.97 inches (5.0 cm), providing adequate support and comfort on the head.
Thickness of headband which affects support.
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Headband Adjustability Range
What is the headband adjustability range?
1.57
inch
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The headband adjustability range is 1.57 inches (4.0 cm), meaning the headset can be adjusted to fit different head sizes.
Maximum adjustment range of the headband.
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Ear Cup Depth
What is the ear cup depth?
1.57
inch
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The ear cup depth is 1.57 inches (3.99 cm), which influences how the headphones fit around the ears and the overall comfort.
Distance from outer edge to inner pad base.
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Ear Cup Inner Diameter
What is the ear cup inner diameter?
2.76
inch
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The ear cup inner diameter is 2.76 inches (7.0 cm), a measurement important for fitting various ear sizes comfortably.
Internal space of ear cups, affecting ear comfort.
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Ear Cup Outer Diameter
What is the ear cup outer diameter?
4.33
inch
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The ear cup outer diameter is 4.33 inches (11.0 cm), denoting the size of the ear cup's exterior, which affects fit around the ear.
Overall size of the ear cups.
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Clamp Force
What is the clamp force?
1.1
lbs
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The clamp force is 1.1 lbs (0.5 kg), which means the pressure applied by the headphones on the head to ensure a secure fit without discomfort.
Pressure applied by headband on the ears.
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Materials & Build
15
Sennheiser HD 660S2
Material
What is the main material of the headphones?
0
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Hybrid
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The material composition includes a hybrid mix presumably balancing plastic and metal components for strength and weight optimization.
Primary construction material of the headphones.
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Ear Cushion Material
What is the ear cushion material?
0
Sennheiser HD 660S2
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Velour
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Ear cushions are made of velour, a soft fabric providing comfort and breathability to reduce ear heat and sweating.
Material of ear cushions that affects comfort and breathability.
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Headband Padding Material
What is the headband padding material?
0
Sennheiser HD 660S2
0
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Foam
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The headband padding is made from foam, providing cushioning and comfort during extended use.
Padding type used in the headband.
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Hinges Material
What is the hinge material?
0
Sennheiser HD 660S2
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Plastic
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Hinges material is plastic, balancing lightweight design with adequate durability for normal use.
Material used for the folding hinges.
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Cable Material
What is the cable material?
0
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Rubber
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The cable material is rubber, offering flexibility and some durability while maintaining reasonable resistance to tangling.
Construction material of the audio cable.
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Reinforced Joints
Do the headphones have reinforced joints?
Yes
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The headphones have reinforced joints, improving durability by strengthening parts that often experience stress and wear.
Indicates if stress points are reinforced for durability.
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Recyclable Materials
Are the headphones made with recyclable materials?
Yes
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The materials used in the headphones are recyclable, supporting environmental responsibility and sustainability.
Indicates if materials are recyclable for sustainability.
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Connector Material
What is the connector material?
0
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Gold Plated
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Metal used for plug connectors.
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Sweat Resistance
Are the headphones sweat resistant?
No
0Votes
Sennheiser HD 660S2
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Indicates whether headphones resist sweat damage.
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Dust Resistance
Are the headphones dust resistant?
No
0Votes
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Indicates whether headphones are resistant to dust particles.
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Scratch Resistant Coating
Do the headphones have scratch resistant coating?
No
0Votes
Sennheiser HD 660S2
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Protective layer against scratches.
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UV Resistant Coating
Do the headphones have UV resistant coating?
No
0Votes
Sennheiser HD 660S2
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Resistance against UV light fading or damage.
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Color Options
What are the color options?
0
Sennheiser HD 660S2
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Black
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Available colors for the headphones.
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Finish
What is the finish?
0
Sennheiser HD 660S2
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Matte
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Surface treatment of the headphone exterior.
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Eco Friendly Certification
What eco friendly certification do the headphones have?
0
Sennheiser HD 660S2
0
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Other
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Environmental certification of the product.
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Audio Performance
20
Sennheiser HD 660S2
Driver Size
What is the driver size?
42
mm
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The driver size is 42 mm, a size that generally offers good bass response and overall balanced sound quality.
Diameter of the driver unit.
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Low Frequency Response
What is the lowest frequency response?
9
Hz
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The low frequency response starts at 9 Hz, extending below the standard audible range to provide deep bass impact and room for low-frequency nuances.
Lowest audible frequency reproduced.
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High Frequency Response
What is the highest frequency response?
41,500
Hz
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The high frequency response reaches 41500 Hz, which is above the typical human hearing range, indicating potential for reproducing subtle high-frequency detail in audio.
Highest audible frequency reproduced.
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Sensitivity
What is the sensitivity?
104
dB
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The sensitivity rating is 104 dB, reflecting how effectively the headphones convert electrical signals into sound. Higher sensitivity generally means louder audio at a given power.
Loudness produced per given input power.
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Sound Signature
What is the sound signature?
0
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Neutral
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The sound signature is neutral, meaning the headphones do not emphasize bass, midrange, or treble frequencies, providing a balanced and accurate sound profile suitable for critical listening.
Tonal balance of headphone output.
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Impedance
What is the impedance?
300
ohm
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The impedance is set at 300 ohms, indicating these headphones are suited primarily for use with dedicated headphone amplifiers or high-powered devices for best performance.
Electrical resistance of headphones.
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Sound Pressure Level
What is the sound pressure level?
104
dB
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The sound pressure level is 104 dB, indicating the maximum loudness the headphone drivers can output without distortion.
Acoustic pressure output.
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Total Harmonic Distortion
What is the THD?
0.04
%
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The total harmonic distortion is very low at 0.04%, ensuring the audio output is clear with minimal distortion even at higher volumes.
Distortion in audio output.
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Dynamic Range
What is the dynamic range?
110
dB
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The dynamic range is 110 dB, which represents the range between the quietest and loudest sounds the headphones can reproduce effectively.
Range between softest and loudest sounds.
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Phase Coherence
What is the phase coherence?
0
Sennheiser HD 660S2
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Excellent
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Phase coherence is excellent, which contributes to more natural sound and better stereo imaging by ensuring sound waves from drivers align properly.
Alignment of frequency components in phase.
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Stereo Imaging Quality
What is the stereo imaging quality?
0
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0
Votes
Excellent
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Sennheiser HD 660S2
The stereo imaging quality is rated as excellent, meaning the headphones provide clear spatial placement of instruments and effects in the sound field.
Ability to position sound accurately in stereo field.
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Soundstage Width
What is the soundstage width?
0
Sennheiser HD 660S2
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Wide
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The soundstage width is wide, offering immersive audio that feels expansive and spacious, which is especially good for music genres that benefit from a sense of space.
Lateral spread of perceived audio.
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Soundstage Depth
What is the soundstage depth?
0
Sennheiser HD 660S2
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Deep
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The soundstage depth is deep, contributing to a layered listening experience where individual instruments can be distinctly perceived at varying distances.
Front-to-back perception of audio field.
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Driver Type
What is the driver type?
0
Sennheiser HD 660S2
0
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Dynamic
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Type of driver technology used for sound production.
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Acoustic Design
What is the acoustic design?
0
Sennheiser HD 660S2
0
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Open Back
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Headphone enclosure type.
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Maximum Input Power
What is the maximum input power?
500
mW
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Maximum power headphones can handle.
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Impulse Response Speed
What is the impulse response speed?
0
Sennheiser HD 660S2
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Fast
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Speed at which drivers respond to signal changes.
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Bass Enhancement Technology
What bass enhancement technology is used?
0
Sennheiser HD 660S2
0
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None
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Technology that enhances bass response.
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Treble Enhancement Technology
What treble enhancement technology is used?
0
Sennheiser HD 660S2
0
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None
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Technology used to enhance treble clarity.
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Surround Sound
Do the headphones support surround sound?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones support surround audio.
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Connectivity & Compatibility
14
Sennheiser HD 660S2
Connection Type
What is the connection type?
0
Sennheiser HD 660S2
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Wired
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These are wired headphones, which typically offer lower latency and consistent audio quality without the need to manage battery life.
Defines whether headphones connect via cable, wireless, or both.
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Wired Connector Gold Plated
Are the wired connectors gold-plated?
Yes
0Votes
Sennheiser HD 660S2
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The wired connectors are gold plated, which provides better conductivity and corrosion resistance for improved audio signal quality.
Indicates if wired connectors are gold-plated for durability.
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Wired Mode Support
Do the headphones support wired mode?
Yes
0Votes
Sennheiser HD 660S2
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Wired mode is supported, allowing use without any wireless connection, usually yielding best audio fidelity.
Indicates if headphones can also be used in wired mode.
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Multipoint Connectivity
Do the headphones support multipoint connectivity?
No
0Votes
Sennheiser HD 660S2
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Multipoint connectivity is not supported; the headphones can only connect to one device at a time.
Ability to connect to multiple devices simultaneously.
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Connector Plug Type
What is the connector plug type?
0
Sennheiser HD 660S2
0
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6.3mm
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Type of physical connector for wired use.
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Detachable Cable Connector Type
What detachable cable connector is used?
0
Sennheiser HD 660S2
0
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Proprietary
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Connector type used for detachable cables.
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NFC Pairing
Do the headphones support NFC pairing?
No
0Votes
Sennheiser HD 660S2
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Allows one-tap NFC device pairing.
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SBC Support
Do the headphones support SBC?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones support SBC codec.
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AAC Support
Do the headphones support AAC?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones support AAC codec.
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AptX Support
Do the headphones support AptX?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones support Qualcomm AptX codec.
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LDAC Support
Do the headphones support LDAC?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones support Sony’s LDAC codec.
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USB Audio Support
Do the headphones support USB audio?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones can be used for audio via USB.
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Low Latency Support
Do the headphones support low latency mode?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones reduce latency for gaming and video sync.
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Operating System Compatibility
What operating systems are supported?
0
Sennheiser HD 660S2
0
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Windows, MacOS, Android, iOS, Linux
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Operating systems the headphones work with.
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Controls & Features
16
Sennheiser HD 660S2
On Device Controls
Do the headphones have on-device controls?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones have physical or touch controls on the unit.
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Track Skipping Controls
Do the headphones support track skipping?
No
0Votes
Sennheiser HD 660S2
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Indicates if users can skip tracks directly on the headphones.
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Volume Limiter
Do the headphones have a volume limiter?
No
0Votes
Sennheiser HD 660S2
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Allows setting a maximum volume for hearing protection.
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Call Answer Controls
Do the headphones support call answering on-device?
No
0Votes
Sennheiser HD 660S2
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Indicates if calls can be answered using headphone controls.
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Gesture Controls
Do the headphones support gesture controls?
No
0Votes
Sennheiser HD 660S2
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Indicates if gestures like swipe or tap are supported.
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Touch Sensitivity Adjustment
Do the headphones allow touch sensitivity adjustment?
No
0Votes
Sennheiser HD 660S2
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Indicates if touch control sensitivity can be adjusted.
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Programmable Buttons
Do the headphones have programmable buttons?
No
0Votes
Sennheiser HD 660S2
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Allows users to assign functions to buttons.
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Control Lock Mode
Do the headphones have control lock mode?
No
0Votes
Sennheiser HD 660S2
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Prevents accidental input when controls are touched.
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Auto Pause Play
Do the headphones auto-pause and play?
No
0Votes
Sennheiser HD 660S2
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Automatically pauses when removed and resumes when worn.
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Customizable EQ
Do the headphones support customizable EQ?
No
0Votes
Sennheiser HD 660S2
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Indicates if sound signature can be customized via equalizer.
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App Support
Do the headphones have app support?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones have a companion app.
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Control Customization In App
Can controls be customized in the app?
No
0Votes
Sennheiser HD 660S2
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Ability to change control functions via app.
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Voice Assistant Support
Do the headphones support voice assistants?
No
0Votes
Sennheiser HD 660S2
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Indicates support for Google Assistant, Siri, Alexa, etc.
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Ambient Sound Mode
Do the headphones have ambient sound mode?
No
0Votes
Sennheiser HD 660S2
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Lets outside sounds in for awareness.
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Transparency Mode
Do the headphones have transparency mode?
No
0Votes
Sennheiser HD 660S2
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Enhanced version of ambient sound mode for clarity.
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Low Latency Mode
Do the headphones support low latency mode?
No
0Votes
Sennheiser HD 660S2
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Reduces delay for gaming or video sync.
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Microphone & Calling
8
Sennheiser HD 660S2
Built In Microphone
Do the headphones have a built-in microphone?
No
0Votes
Sennheiser HD 660S2
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Indicates if the headphones have a built-in microphone.
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Detachable Boom Mic
Do the headphones have a detachable boom mic?
No
0Votes
Sennheiser HD 660S2
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Indicates if headphones support a detachable boom mic.
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Noise Cancelling Microphone
Is the microphone noise cancelling?
No
0Votes
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Indicates if microphone has active noise cancelling.
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Beamforming Microphone
Does the microphone support beamforming?
No
0Votes
Sennheiser HD 660S2
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Uses multiple mics to focus on voice direction.
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Echo Cancellation
Do the headphones support echo cancellation?
No
0Votes
Sennheiser HD 660S2
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Reduces echo during calls.
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Wind Noise Reduction
Do the headphones reduce wind noise?
No
0Votes
Sennheiser HD 660S2
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Minimizes wind interference during outdoor use.
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Mute Button
Do the headphones have a mute button?
No
0Votes
Sennheiser HD 660S2
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Indicates if there is a dedicated mute control.
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Microphone Placement Adjustment
Can the microphone placement be adjusted?
No
0Votes
Sennheiser HD 660S2
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Indicates if the microphone position can be adjusted.
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Noise Control
9
Sennheiser HD 660S2
Passive Seal Quality
What is the passive seal quality?
0
Sennheiser HD 660S2
0
Votes
Good
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The passive seal quality is rated good, which helps reduce ambient noise without active noise cancellation technology.
Quality of physical seal for blocking noise.
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Passive Noise Isolation
Do the headphones provide passive noise isolation?
Yes
0Votes
Sennheiser HD 660S2
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The headphones provide passive noise isolation, enhancing listening experience by naturally blocking external noise via the ear cup design.
Physical sealing and padding to block noise.
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Active Noise Cancellation
Do the headphones support active noise cancellation?
No
0Votes
Sennheiser HD 660S2
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Indicates if the headphones have ANC technology.
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ANC Level Adjustment
Can ANC levels be adjusted?
No
0Votes
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Whether ANC intensity can be adjusted.
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Transparency Mode Level Adjustment
Can transparency levels be adjusted?
No
0Votes
Sennheiser HD 660S2
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Allows adjustment of transparency mode strength.
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Adaptive Sound Control
Do the headphones feature adaptive sound control?
No
0Votes
Sennheiser HD 660S2
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Automatically adjusts noise control based on environment.
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Automatic ANC Adjustment
Does ANC adjust automatically?
No
0Votes
Sennheiser HD 660S2
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ANC adjusts automatically without user input.
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Ambient Noise Detection
Do the headphones detect ambient noise?
No
0Votes
Sennheiser HD 660S2
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Sensors detect surrounding noise levels.
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Wind Noise Reduction For ANC
Does ANC reduce wind noise?
No
0Votes
Sennheiser HD 660S2
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Reduces wind interference in ANC mode.
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Battery & Power
6
Sennheiser HD 660S2
Replaceable Battery
Is the battery replaceable?
No
0Votes
Sennheiser HD 660S2
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Indicates if the battery can be replaced.
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Quick Charge Support
Does it support quick charging?
No
0Votes
Sennheiser HD 660S2
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Whether quick charge is supported.
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Wireless Charging Support
Does it support wireless charging?
No
0Votes
Sennheiser HD 660S2
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Supports wireless charging.
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Overcharge Protection
Does it have overcharge protection?
No
0Votes
Sennheiser HD 660S2
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Protects battery from overcharging.
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Power Saving Mode
Does it have a power saving mode?
No
0Votes
Sennheiser HD 660S2
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Extends battery life by reducing power use.
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Battery Indicator
Does it have a battery indicator?
No
0Votes
Sennheiser HD 660S2
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Shows battery level on device.
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Smart & Extra Features
16
Sennheiser HD 660S2
Hi Res Audio Certification
Is it Hi-Res certified?
Yes
0Votes
Sennheiser HD 660S2
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This headphone model has Hi-Res Audio Certification, ensuring it can reproduce high-resolution audio files with superior sound quality.
Shows if headphones meet Hi-Res audio standards.
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Gaming Mode Optimization
Is there a gaming optimization mode?
No
0Votes
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No gaming mode optimization is present, indicating these headphones do not have specialized features tailored specifically for gaming use.
Special low-latency mode for gaming.
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Sennheiser HD 660S2
AI Upscaling Audio
Does it feature AI audio upscaling?
No
0Votes
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Enhances lower-quality audio using AI algorithms.
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Head Tracking For Spatial Audio
Does it support head tracking for spatial audio?
No
0Votes
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Supports dynamic spatial audio through head tracking.
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Sennheiser HD 660S2
Dolby Atmos Support
Is Dolby Atmos supported?
No
0Votes
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Indicates Dolby Atmos surround compatibility.
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Sennheiser HD 660S2
Custom Sound Profiles
Can you create custom sound profiles?
No
0Votes
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Allows personalized sound settings.
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Sennheiser HD 660S2
Learning EQ Adaptation
Does it adapt EQ through learning?
No
0Votes
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AI adjusts EQ over time based on listening habits.
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Sennheiser HD 660S2
Hearing Protection Mode
Does it include hearing protection mode?
No
0Votes
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Limits volume peaks to protect hearing.
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Sennheiser HD 660S2
Sleep Tracking
Does it track sleep?
No
0Votes
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Tracks sleep patterns while wearing headphones.
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Sennheiser HD 660S2
Sleep Mode Timer
Does it have a sleep mode timer?
No
0Votes
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Timer to automatically power off during sleep.
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Sennheiser HD 660S2
Multi Device Sync
Does it support multi-device sync?
No
0Votes
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Connects to multiple devices simultaneously.
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Sennheiser HD 660S2
Auto Device Switching
Does it support auto device switching?
No
0Votes
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Seamlessly switches between connected devices.
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Sennheiser HD 660S2
Find My Device Support
Does it support Find My Device?
No
0Votes
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Supports location tracking for lost headphones.
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Sennheiser HD 660S2
Firmware Update Support
Can the firmware be updated?
No
0Votes
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Indicates ability to update software for improvements.
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Sennheiser HD 660S2
Voice Recognition Personalization
Does it support voice recognition personalization?
No
0Votes
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Learns and adapts to user’s voice commands.
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Sennheiser HD 660S2
Integrated Storage For Cable
Does it have cable storage?
No
0Votes
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Provides onboard storage for detachable cables.
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Accessories
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Sennheiser HD 660S2
Carrying Case Type
What type of carrying case is included?
0
Sennheiser HD 660S2
0
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Hard Case
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Sennheiser HD 660S2
This carrying case offers strong protection against impacts and helps keep the headphones safe when not in use or during travel.
The type of carrying case included.
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Sennheiser HD 660S2
Carry Case
Is a carry case included?
Yes
0Votes
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Whether a carry case is bundled with the headphones.
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Sennheiser HD 660S2
Protective Pouch
Is a protective pouch included?
No
0Votes
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Indicates if a protective pouch is included.
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Sennheiser HD 660S2
Extra Ear Tips
Are extra ear tips included?
No
0Votes
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Indicates if extra ear tips are provided.
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Sennheiser HD 660S2
Extra Earpads
Are extra earpads included?
No
0Votes
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Indicates if spare earpads are provided.
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Sennheiser HD 660S2
Audio Cable
Is an audio cable included?
Yes
0Votes
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Indicates if an audio cable is provided.
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Sennheiser HD 660S2
Charging Cable
Is a charging cable included?
No
0Votes
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Indicates if a charging cable is provided.
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Sennheiser HD 660S2
Cable Adapter
Is a cable adapter included?
Yes
0Votes
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Indicates if a cable adapter is provided.
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Sennheiser HD 660S2
Airplane Adapter
Is an airplane adapter included?
No
0Votes
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Indicates if an airplane adapter is included.
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Sennheiser HD 660S2
Cable Clip
Is a cable clip included?
No
0Votes
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Indicates if a cable clip is provided.
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Sennheiser HD 660S2
Cleaning Tool
Is a cleaning tool included?
No
0Votes
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Indicates if a cleaning tool is provided.
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Sennheiser HD 660S2
User Manual
Is a user manual included?
Yes
0Votes
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Indicates if a user manual is provided.
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Sennheiser HD 660S2
Warranty Card
Is a warranty card included?
Yes
0Votes
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Indicates if a warranty card is provided.
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Sennheiser HD 660S2
Branding Stickers
Are branding stickers included?
No
0Votes
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Indicates if branding stickers are provided.
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Surveys
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Sennheiser HD 660S2
Sound Quality
How would you rate the overall sound quality of these headphones?
Excellent — Clear, balanced, and immersive sound
0Votes
Very good — Great clarity with rich tones
0Votes
Decent — Clear mids but limited depth
0Votes
Average — Lacks detail or balance
0Votes
Poor — Muffled or distorted sound
0Votes
Sennheiser HD 660S2
Bass Performance
How strong and accurate is the bass performance on these headphones?
Powerful — Deep and clean low-end
0Votes
Strong — Noticeable and satisfying bass
0Votes
Balanced — Good mix of lows and highs
0Votes
Weak — Light or flat bass response
0Votes
Poor — No real bass presence
0Votes
Sennheiser HD 660S2
Comfort and Fit
How comfortable do these headphones feel during long listening sessions?
Extremely comfortable — Feels weightless for hours
0Votes
Comfortable — Slight pressure after long use
0Votes
Average — Fine for short periods
0Votes
Tight — Uncomfortable after an hour or two
0Votes
Unpleasant — Difficult to wear for long
0Votes
Sennheiser HD 660S2
Noise Cancellation
How effective is the noise cancellation feature on these headphones?
Excellent — Blocks over 90% of external noise
0Votes
Good — Reduces most background sounds
0Votes
Fair — Works in moderate noise only
0Votes
Weak — Minimal difference noticed
0Votes
Poor — Hardly blocks any noise
0Votes
Sennheiser HD 660S2
Battery Life
How long does the battery last on a full charge?
Excellent — Over 40 hours
0Votes
Good — 30 to 40 hours
0Votes
Average — 20 to 30 hours
0Votes
Short — 10 to 20 hours
0Votes
Very short — Under 10 hours
0Votes
Sennheiser HD 660S2
Build Quality and Durability
How durable and sturdy do these headphones feel?
Very durable — Lasts over 5 years
0Votes
Solid — Feels high-quality and strong
0Votes
Decent — Works fine but not rugged
0Votes
Weak — Shows wear within a year
0Votes
Fragile — Breaks or cracks easily
0Votes
Sennheiser HD 660S2
Connectivity
How smooth and reliable is the Bluetooth or wired connection of these headphones?
Excellent — Connects instantly, never drops
0Votes
Good — Stable with rare issues
0Votes
Decent — Occasional lag or delay
0Votes
Weak — Disconnects sometimes
0Votes
Poor — Frequently loses connection
0Votes
Sennheiser HD 660S2
Design and Style
How stylish and appealing do these headphones look?
Very stylish — Modern and premium design
0Votes
Attractive — Clean and sleek look
0Votes
Decent — Looks fine but simple
0Votes
Basic — Functional but plain
0Votes
Unappealing — Bulky or outdated design
0Votes
Sennheiser HD 660S2
Portability
How easy is it to carry and store these headphones when not in use?
Very portable — Folds compactly and lightweight
0Votes
Easy to carry — Compact with carrying case
0Votes
Manageable — Moderate size and weight
0Votes
Bulky — Hard to pack in small bags
0Votes
Very bulky — Difficult to travel with
0Votes
Sennheiser HD 660S2
Pricing
How would you describe the price of these headphones for their sound and features?
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