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Sennheiser HD 660S vs Sennheiser HD 820 vs Sennheiser Momentum 4 Wireless

Name: Sennheiser HD 660S
Brand: Sennheiser
Price: 499 USD
Availability: InStock
Rating: 9.5

Table of content

Connectivity Comparison
Basic Information Comparison
Technical Specifications Comparison
Usage Comparison

Features Comparison
Audio Performance Comparison
Physical Characteristics Comparison
Performance Ratings Comparison

Connectivity Comparison

Connection Type 📶

The primary method used to connect the headphones to audio devices, indicating whether they use wired connections, wireless technology, or both options.

Sennheiser HD 660S

Wired

The connection type of Sennheiser HD 660S is Wired. These headphones connect directly to audio sources using cables for reliable connectivity and often superior sound quality. Click to see all.

Sennheiser HD 820

Both (Wireless + Wired Option)

The connection type of Sennheiser HD 820 is Both (Wireless + Wired Option). These versatile headphones offer both wireless freedom and wired reliability with the ability to switch between connection methods. Click to see all.

Sennheiser Momentum 4 Wireless

Wireless + Wired Option

The connection type of Sennheiser Momentum 4 Wireless is Wireless + Wired Option. These headphones feature both wireless technology and wired inputs allowing users to choose their preferred connection method. Click to see all.
Battery Life 🔋

The number of hours the wireless headphones can operate on a single charge, typically measured during standard usage with default settings.

Sennheiser HD 660S

~
Sennheiser HD 820

~
Sennheiser Momentum 4 Wireless

60 hours

The battery life of Sennheiser Momentum 4 Wireless is 60 hours. Click to see all.
Battery Life Type 🔋

Classification of battery performance based on duration range, providing an easy-to-understand category for the headphones' operational time between charges.

Sennheiser HD 660S

N/A (Wired Only)

The battery life type of Sennheiser HD 660S is N/A (Wired Only). Wired-only over-ear headphones require no battery charging and offer consistent sound quality with zero latency for critical listening. Click to see all.

Sennheiser HD 820

N/A (Wired Only)

The battery life type of Sennheiser HD 820 is N/A (Wired Only). Wired-only over-ear headphones require no battery charging and offer consistent sound quality with zero latency for critical listening. Click to see all.

Sennheiser Momentum 4 Wireless

Ultra (50+ Hours)

The battery life type of Sennheiser Momentum 4 Wireless is Ultra (50+ Hours). These headphones deliver exceptional 50+ hour battery life Click to see all.
Multipoint Connection 🔗

Indicates whether the headphones can connect to multiple devices simultaneously, allowing seamless switching between sources without reconnection.

Sennheiser HD 660S

No
Sennheiser HD 820

No
Sennheiser Momentum 4 Wireless

Yes
Bluetooth Codecs Supported 📡

Bluetooth codecs determine audio transmission quality in wireless headphones, affecting sound quality, latency, and compatibility with different source devices.

Sennheiser HD 660S

N/A

The Bluetooth codecs supported by Sennheiser HD 660S are N/A. These over-ear headphones use wired connections only Click to see all.

Sennheiser HD 820

SBC

The Bluetooth codecs supported by Sennheiser HD 820 are SBC. Over-ear headphones with SBC codec use the standard Bluetooth audio transmission format supported by all Bluetooth audio devices. Click to see all.

AAC

The Bluetooth codecs supported by Sennheiser HD 820 are AAC. Over-ear headphones with AAC codec support deliver high-quality wireless audio especially optimized for Apple devices. Click to see all.

AptX

The Bluetooth codecs supported by Sennheiser HD 820 are AptX. Over-ear headphones with aptX codec support deliver better wireless audio quality with reduced latency on compatible devices. Click to see all.

LDAC

The Bluetooth codecs supported by Sennheiser HD 820 are LDAC. Over-ear headphones with LDAC codec support deliver exceptional Hi-Res wireless audio up to 990kbps on compatible Sony and Android devices. Click to see all.

Sennheiser Momentum 4 Wireless

SBC

The Bluetooth codecs supported by Sennheiser Momentum 4 Wireless are SBC. Over-ear headphones with SBC codec use the standard Bluetooth audio transmission format supported by all Bluetooth audio devices. Click to see all.

AAC

The Bluetooth codecs supported by Sennheiser Momentum 4 Wireless are AAC. Over-ear headphones with AAC codec support deliver high-quality wireless audio especially optimized for Apple devices. Click to see all.

AptX

The Bluetooth codecs supported by Sennheiser Momentum 4 Wireless are AptX. Over-ear headphones with aptX codec support deliver better wireless audio quality with reduced latency on compatible devices. Click to see all.

AptX HD

The Bluetooth codecs supported by Sennheiser Momentum 4 Wireless are AptX HD. Over-ear headphones with aptX HD codec support deliver high-resolution wireless audio with 24-bit depth for audiophile-quality listening. Click to see all.

AptX Adaptive

The Bluetooth codecs supported by Sennheiser Momentum 4 Wireless are AptX Adaptive. Over-ear headphones with aptX Adaptive support intelligently balance audio quality and connection stability based on wireless conditions. Click to see all.

Basic Information Comparison

Brand 🎧

Brand name or manufacturer of the over-ear headphones, identifies the company that designed and produced the headphones.

For all*

Sennheiser

Sennheiser over-ear headphones deliver legendary audio precision with balanced sound and exceptional build quality.
Price 💲

Current market price of the over-ear headphones, representing the cost to purchase new from authorized retailers.

Sennheiser HD 660S

499 USD

The price of Sennheiser HD 660S is 499.

Sennheiser HD 820

1999 USD

The price of Sennheiser HD 820 is 1999.

Sennheiser Momentum 4 Wireless

349 USD

The price of Sennheiser Momentum 4 Wireless is 349.
Price Range 💸

A classification of over-ear headphones by price bracket, making it easier to filter and compare products within specific budget categories.

Sennheiser HD 660S

Premium

The price range of Sennheiser HD 660S is Premium. Premium over-ear headphones deliver exceptional sound quality and craftsmanship with luxury materials in the $200-$300 range. Click to see all.

Sennheiser HD 820

Premium

The price range of Sennheiser HD 820 is Premium. Premium over-ear headphones deliver exceptional sound quality and craftsmanship with luxury materials in the $200-$300 range. Click to see all.

Sennheiser Momentum 4 Wireless

Mid-Range

The price range of Sennheiser Momentum 4 Wireless is Mid-Range. Mid-range over-ear headphones offer balanced sound quality and improved durability with better materials in the $100-$150 range. Click to see all.
Primary Use Case 🏢

Primary Use Case refers to the optimal situation or environment for using the headphones, tailored to maximize specific listening experiences based on design features and sound characteristics.

Sennheiser HD 660S

Audiophile Listening

The primary use case for Sennheiser HD 660S is Audiophile Listening. Audiophile listening headphones focus on accurate sound reproduction with high-resolution details and natural soundstage for critical music appreciation. Click to see all.

Sennheiser HD 820

Audiophile Listening

The primary use case for Sennheiser HD 820 is Audiophile Listening. Audiophile listening headphones focus on accurate sound reproduction with high-resolution details and natural soundstage for critical music appreciation. Click to see all.

Sennheiser Momentum 4 Wireless

Home Listening

The primary use case for Sennheiser Momentum 4 Wireless is Home Listening. Home listening headphones prioritize comfort and sound quality over portability Click to see all.
Made In 🌎

Country where the headphones are primarily manufactured , which can influence perceptions of quality , design philosophy , and craftsmanship.

For all*

Germany

German-made headphones showcase precision engineering and meticulous attention to sonic accuracy

Technical Specifications Comparison

Connectivity 🔗

The method by which headphones connect to audio sources , including wired connections , wireless technologies , and hybrid options that support multiple connection types.

For all*

Wired (3.5Mm)

These headphones connect with standard 3.5mm audio jacks compatible with most smartphones

Sennheiser HD 660S

Wired (1/4 Inch)

Sennheiser HD 660S connects to audio sources via Wired (1/4 Inch). These headphones use professional 1/4 inch plugs ideal for connecting to high-end audio equipment and amplifiers. Click to see all.

Sennheiser HD 820

Wired (1/4 Inch)

Sennheiser HD 820 connects to audio sources via Wired (1/4 Inch). These headphones use professional 1/4 inch plugs ideal for connecting to high-end audio equipment and amplifiers. Click to see all.

Sennheiser Momentum 4 Wireless

Bluetooth

Sennheiser Momentum 4 Wireless connects to audio sources via Bluetooth. These headphones connect wirelessly to devices using Bluetooth technology for cable-free audio streaming. Click to see all.
Driver Type 🔊

The technical mechanism used to produce sound , representing the fundamental technology that converts electrical signals into audible soundwaves.

For all*

Dynamic

These headphones use traditional dynamic drivers that create sound through a moving coil mechanism for balanced audio performance.

Usage Comparison

For whom 👥

The primary user demographic for whom the headphones are designed , reflecting use case priorities and feature emphasis.

For all*

Audiophiles

Over-ear headphones for audiophiles deliver exceptional sound quality with high-resolution audio reproduction for discerning listeners.

Sennheiser Momentum 4 Wireless

Commuters

Sennheiser Momentum 4 Wireless is designed for Commuters. Over-ear headphones for commuters feature effective noise cancellation and portable designs to create peaceful listening environments during travel. Click to see all.
Purpose 🏃

Specific activities or use cases where the headphones excel , highlighting optimal usage scenarios based on design and features.

For all*

Critical Listening

Over-ear headphones for critical listening deliver accurate sound reproduction with high detail resolution for analyzing audio nuances.

Sennheiser Momentum 4 Wireless

Travel

Sennheiser Momentum 4 Wireless is best for Travel. Over-ear headphones for travel feature noise cancellation and foldable designs to block ambient sounds during flights and commutes. Click to see all.

Features Comparison

Noise Cancellation 🔊

Indicates whether the headphones feature active noise cancellation (ANC) technology that electronically reduces ambient sounds and external noise.

Sennheiser HD 660S

No
Sennheiser HD 820

Yes
Sennheiser Momentum 4 Wireless

Yes
Microphone Quality 🎙️

Rates the performance of the built-in microphone for making calls, voice recordings, or gaming communication, based on clarity and noise rejection.

Sennheiser HD 660S

No Microphone

The microphone quality of Sennheiser HD 660S is No Microphone. Headphones without microphones focus purely on audio reproduction without call functionality Click to see all.

Sennheiser HD 820

No Microphone

The microphone quality of Sennheiser HD 820 is No Microphone. Headphones without microphones focus purely on audio reproduction without call functionality Click to see all.

Sennheiser Momentum 4 Wireless

Good For Calls

The microphone quality of Sennheiser Momentum 4 Wireless is Good For Calls. Headphones with good call microphones provide clear voice reproduction with effective noise filtering Click to see all.
Detachable Cable 🔗

Detachable cable feature allows users to replace cables when damaged, upgrade to better quality cables, or switch between different cable lengths and styles.

For all*

Yes

These headphones feature removable audio cables that can be replaced if damaged or swapped for different connection types.
Equalizer Options 🎚️

Equalizer Options describe the available sound customization tools, allowing users to adjust frequency response based on personal preference or listening material.

Sennheiser HD 660S

None

The equalizer options provided by Sennheiser HD 660S are None. These headphones come without any equalizer options and deliver the sound as intended by the manufacturer. Click to see all.

Sennheiser HD 820

App-Based Custom EQ

The equalizer options provided by Sennheiser HD 820 are App-Based Custom EQ. Click to see all.

Sennheiser Momentum 4 Wireless

App-Based Custom EQ

The equalizer options provided by Sennheiser Momentum 4 Wireless are App-Based Custom EQ. Click to see all.

Audio Performance Comparison

Sound Signature 🎵

The overall tonal balance and audio characteristics of the headphones, describing how they present different frequencies and the listening experience they deliver.

Sennheiser HD 660S

Neutral

The sound signature of Sennheiser HD 660S is Neutral. Neutral over-ear headphones reproduce sound without coloration, delivering audio that closely matches the original recording with accurate frequency response. Click to see all.

Sennheiser HD 820

Neutral

The sound signature of Sennheiser HD 820 is Neutral. Neutral over-ear headphones reproduce sound without coloration, delivering audio that closely matches the original recording with accurate frequency response. Click to see all.

Sennheiser Momentum 4 Wireless

Balanced

The sound signature of Sennheiser Momentum 4 Wireless is Balanced. Balanced over-ear headphones offer a sound profile where no single frequency range dominates, creating a natural listening experience. Click to see all.
Active Noise Cancellation Performance 🔊

Active noise cancellation (ANC) technology effectively blocks unwanted ambient noise by creating opposing sound waves, providing a quieter listening environment for music and calls.

Sennheiser HD 660S

N/A

The active noise cancellation performance of Sennheiser HD 660S is N/A. These over-ear headphones rely on passive noise isolation from their physical design rather than active electronic noise cancellation technology. Click to see all.

Sennheiser HD 820

Excellent

The active noise cancellation performance of Sennheiser HD 820 is Excellent. Over-ear headphones with excellent noise cancellation provide superior isolation from external sounds for immersive listening experiences. Click to see all.

Sennheiser Momentum 4 Wireless

Very Good

The active noise cancellation performance of Sennheiser Momentum 4 Wireless is Very Good. Over-ear headphones with very good noise cancellation significantly reduce environmental sounds for focused listening with minimal distractions. Click to see all.
Soundstage 🎤

Soundstage refers to the perceived width, depth, and height of the audio presentation, creating a sense of space and instrument placement in the listening experience.

For all*

Wide

Wide soundstage headphones create spacious audio with excellent instrument separation for an immersive listening experience that mimics live performances.

Physical Characteristics Comparison

Weight ⚖️

Physical weight of the over-ear headphones in grams, indicating how heavy they will feel when worn.

Sennheiser HD 660S

260 grams

The weight of Sennheiser HD 660S is 260. Click to see all.

Sennheiser HD 820

360 grams

The weight of Sennheiser HD 820 is 360. Click to see all.

Sennheiser Momentum 4 Wireless

293 grams

The weight of Sennheiser Momentum 4 Wireless is 293. Click to see all.
Weight Category 🏋️

Classification of over-ear headphones based on their weight range, providing a quick reference for comfort expectations.

Sennheiser HD 660S

Light

The weight category of Sennheiser HD 660S is Light. These light over-ear headphones offer comfortable extended wear while maintaining good sound quality for everyday listening. Click to see all.

Sennheiser HD 820

Medium

The weight category of Sennheiser HD 820 is Medium. These medium weight over-ear headphones balance comfort and sound quality with a moderate weight that suits most users. Click to see all.

Sennheiser Momentum 4 Wireless

Medium

The weight category of Sennheiser Momentum 4 Wireless is Medium. These medium weight over-ear headphones balance comfort and sound quality with a moderate weight that suits most users. Click to see all.
Comfort Level 🛀

Describes how comfortable the headphones feel during extended wearing periods, considering factors like padding quality, weight distribution, and clamping force.

For all*

High

High comfort level over-ear headphones feature plush padding with ergonomic design for extended listening without fatigue.
Earcup Design 👂

Indicates whether the headphones have open-back (more natural sound, leaks audio) or closed-back (better isolation, contained sound) earcup construction.

Sennheiser HD 660S

Open-Back

The earcup design of Sennheiser HD 660S is Open-Back. These headphones have perforated earcups that allow air flow for a more natural Click to see all.

Sennheiser HD 820

Closed-Back

The earcup design of Sennheiser HD 820 is Closed-Back. These headphones have sealed earcups that prevent sound leakage and provide better isolation from external noise. Click to see all.

Sennheiser Momentum 4 Wireless

Closed-Back

The earcup design of Sennheiser Momentum 4 Wireless is Closed-Back. These headphones have sealed earcups that prevent sound leakage and provide better isolation from external noise. Click to see all.
Build Quality 🔨

Build Quality indicates the durability and materials used in the headphone construction, affecting longevity and premium feel during daily use.

For all*

Premium

Premium build quality over-ear headphones feature high-end materials like metal and leather with exceptional attention to detail.

Performance Ratings Comparison

Sound Quality Score 🎵

Expert and user assessment of audio reproduction quality , reflecting fidelity , accuracy , and overall listening experience on a scale of 1-10.

Sennheiser HD 660S

9.5

Expert and user assessment of audio reproduction quality , reflecting fidelity , accuracy , and overall listening experience on a scale of 1-10. (25%) Better sound quality over-ear headphones deliver more accurate, detailed, and balanced audio reproduction for a more enjoyable listening experience. Click to see all.

Sennheiser HD 820

9.2

Expert and user assessment of audio reproduction quality , reflecting fidelity , accuracy , and overall listening experience on a scale of 1-10. (25%) Better sound quality over-ear headphones deliver more accurate, detailed, and balanced audio reproduction for a more enjoyable listening experience. Click to see all.

Sennheiser Momentum 4 Wireless

8.9

Expert and user assessment of audio reproduction quality , reflecting fidelity , accuracy , and overall listening experience on a scale of 1-10. (25%) Better sound quality over-ear headphones deliver more accurate, detailed, and balanced audio reproduction for a more enjoyable listening experience. Click to see all.
Comfort Score 🛁

Assessment of physical comfort during extended wear , considering factors like weight , padding , clamping force , and heat buildup.

Sennheiser HD 660S

8.8

Assessment of physical comfort during extended wear , considering factors like weight , padding , clamping force , and heat buildup. (20%) More comfortable over-ear headphones have better padding, weight distribution, and design for extended wear without causing fatigue or pain. Click to see all.

Sennheiser HD 820

8.7

Assessment of physical comfort during extended wear , considering factors like weight , padding , clamping force , and heat buildup. (20%) More comfortable over-ear headphones have better padding, weight distribution, and design for extended wear without causing fatigue or pain. Click to see all.

Sennheiser Momentum 4 Wireless

9

Assessment of physical comfort during extended wear , considering factors like weight , padding , clamping force , and heat buildup. (20%) More comfortable over-ear headphones have better padding, weight distribution, and design for extended wear without causing fatigue or pain. Click to see all.
Build Quality Score 🔨

Evaluation of construction durability , material quality , and overall craftsmanship on a scale of 1-10.

Sennheiser HD 660S

9

Evaluation of construction durability , material quality , and overall craftsmanship on a scale of 1-10. (15%) Higher build quality over-ear headphones feature premium materials and construction, resulting in better durability, feel, and longevity. Click to see all.

Sennheiser HD 820

9.5

Evaluation of construction durability , material quality , and overall craftsmanship on a scale of 1-10. (15%) Higher build quality over-ear headphones feature premium materials and construction, resulting in better durability, feel, and longevity. Click to see all.

Sennheiser Momentum 4 Wireless

8.7

Evaluation of construction durability , material quality , and overall craftsmanship on a scale of 1-10. (15%) Higher build quality over-ear headphones feature premium materials and construction, resulting in better durability, feel, and longevity. Click to see all.
Value For Money 💸

Rating that reflects the perceived value of the headphones in relation to their cost , balancing performance against price.

Sennheiser HD 660S

8.5

Rating that reflects the perceived value of the headphones in relation to their cost , balancing performance against price. (20%) Better value over-ear headphones offer an optimal balance of quality, features, and performance relative to their price point. Click to see all.

Sennheiser HD 820

7.8

Rating that reflects the perceived value of the headphones in relation to their cost , balancing performance against price. (20%) Better value over-ear headphones offer an optimal balance of quality, features, and performance relative to their price point. Click to see all.

Sennheiser Momentum 4 Wireless

9

Rating that reflects the perceived value of the headphones in relation to their cost , balancing performance against price. (20%) Better value over-ear headphones offer an optimal balance of quality, features, and performance relative to their price point. Click to see all.
Buy It For Life 📏

Assessment of long-term durability and timelessness , indicating whether headphones represent a lasting investment rather than a temporary purchase.

Sennheiser HD 660S

9.2

Assessment of long-term durability and timelessness , indicating whether headphones represent a lasting investment rather than a temporary purchase. (20%) More durable over-ear headphones are built to last longer, offering better long-term value despite potentially higher upfront costs. Click to see all.

Sennheiser HD 820

9.3

Assessment of long-term durability and timelessness , indicating whether headphones represent a lasting investment rather than a temporary purchase. (20%) More durable over-ear headphones are built to last longer, offering better long-term value despite potentially higher upfront costs. Click to see all.

Sennheiser Momentum 4 Wireless

8

Assessment of long-term durability and timelessness , indicating whether headphones represent a lasting investment rather than a temporary purchase. (20%) More durable over-ear headphones are built to last longer, offering better long-term value despite potentially higher upfront costs. Click to see all.
Score 🏆

Comprehensive evaluation combining all performance metrics into a single rating , weighted according to relative importance for typical users.

Sennheiser HD 660S

9.2

The overall Score of Sennheiser HD 660S is 9.2. Click to see all.

Sennheiser HD 820

9

The overall Score of Sennheiser HD 820 is 9. Click to see all.

Sennheiser Momentum 4 Wireless

8.9

The overall Score of Sennheiser Momentum 4 Wireless is 8.9. Click to see all.

Alternatives to Sennheiser HD 660S

Beyerdynamic Amiron Home

Known for

⚖️ is lighter than Sennheiser HD 820

🛁 is more comfortable than Sennheiser HD 820

📏 is more durable than Sennheiser HD 820

Bowers & Wilkins PX8

Known for

🔋 has longer battery life than Sennheiser HD 820

🛁 is more comfortable than Sennheiser HD 820

Sennheiser HD 650

Known for

💸 offers better value for money than Sennheiser HD 820

Sony MDR-1AM2

Known for

🔋 has longer battery life than Sennheiser HD 820

💸 offers better value for money than Sennheiser HD 820

Technics EAH-F70N

Known for

🔋 has longer battery life than Sennheiser HD 820

Shure SRH1540

Known for

🛁 is more comfortable than Sennheiser HD 820

💸 offers better value for money than Sennheiser HD 820

Drop + Sennheiser HD 6XX

Known for

💸 offers better value for money than Sennheiser HD 820

🏆 is better overall than Sennheiser HD 820

Sennheiser HD 800S

Known for

🎵 has better sound quality than Sennheiser HD 820

🛁 is more comfortable than Sennheiser HD 820

🔨 has higher build quality than Sennheiser HD 820

💸 offers better value for money than Sennheiser HD 820

📏 is more durable than Sennheiser HD 820

🏆 is better overall than Sennheiser HD 820

Sennheiser HD 560S

Known for

💸 offers better value for money than Sennheiser HD 820

Drop Panda

Known for

🔋 has longer battery life than Sennheiser HD 820

💸 offers better value for money than Sennheiser HD 820

Sennheiser HD 660S vs Sennheiser HD 820 vs Sennheiser Momentum 4 Wireless

Table of content

Connectivity Comparison

Connection Type 📶

Battery Life 🔋

Battery Life Type 🔋

Multipoint Connection 🔗

Bluetooth Codecs Supported 📡

Basic Information Comparison

Brand 🎧

Price 💲

Price Range 💸

Primary Use Case 🏢

Made In 🌎

Technical Specifications Comparison

Connectivity 🔗

Driver Type 🔊

Usage Comparison

For whom 👥

Purpose 🏃

Features Comparison

Noise Cancellation 🔊

Microphone Quality 🎙️

Detachable Cable 🔗

Equalizer Options 🎚️

Audio Performance Comparison

Sound Signature 🎵

Active Noise Cancellation Performance 🔊

Soundstage 🎤

Physical Characteristics Comparison

Weight ⚖️

Weight Category 🏋️

Comfort Level 🛀

Earcup Design 👂

Build Quality 🔨

Performance Ratings Comparison

Sound Quality Score 🎵

Comfort Score 🛁

Build Quality Score 🔨

Value For Money 💸

Buy It For Life 📏

Score 🏆