Reviewed on Jun 15, 2016 , Marc Henney, Jean-Christophe Lamontagne

Sennheiser HD 650
HEADPHONES REVIEW

Usage Ratings
5.2Mixed Usage
Show Help
What it is This is the combination of the different use cases to evaluate how versatile the headphones are. Therefore an everyday headphone should be well-rounded enough to adapt to most situations and environments without significant losses in sound quality, design ergonomics or isolation.
8.1Critical Listening
Show Help
What it is The level of audio fidelity a headphone can reproduce. Therefore a balanced and true representation of bass, mids, treble, soundstage and imaging, as well as a comfortable listening experience, is essential for critical listening.
Score components:
3.5Commute/Travel
Show Help
What it is How well the headphones handle the loud environments involved in commuting or traveling. Therefore your listening experience should be comfortable, hassle-free and as isolated from noise as possible.
5.0Sports/Fitness
Show Help
What it is How well-adapted the headphones are, to use while doing sports or strenuous exercise. Therefore the headphones should not be too cumbersome and deliver a stable and comfortable listening experience.
4.2Office
Show Help
What it is How well the headphones can deliver a comfortable and isolated listening experience in an office-like environment. They should not leak much and should block the noise of a busy office.
5.2Studio Recording
Show Help
What it is How effective the headphones are in a studio recording environment. Therefore sound quality should be good, and leakage should be minimal, to not add noise to the recording. They should also be durable for continuous and repeated studio use.
Type : Over-ear
Enclosure : Open-Back
Wireless : No
Noise-Cancelling : No
Mic : No
Transducer : Dynamic

The Sennheiser HD 650 deliver an excellent and open sound that's great for critical listening. They're comfortable and decently built. Sadly, they're only average as everyday, casual headphones. The open-back design lets noise seep into your audio and leaks a lot. They will be distracting to the people around you, even at moderate volumes.

Test Results
Design 6.2
Sound 8.2
Isolation 1.7
Active Features 0
Pros
  • Great audio reproduction.
  • Above-average soundstage.
  • Comfortable and stable design.
Cons
  • Leaks a lot.
  • Poor noise isolation.

Check Price

6.2

Design

Show Help
Score components:
Sennheiser HD 650 Design Picture

The HD 650 are decently designed headphones with large comfortable earcups. They're less tight than the HD 600, which reduces the clamping sensation you feel during long listening sessions. Sadly, this also makes them slightly less stable on your head. They offer no audio control options, and they're also a bit too bulky and may require a bag to carry them around.

Style
Sennheiser HD 650 Design Picture 2

The HD 650 have the same design as the HD 600 with a few minor differences. They have a two-tone, dark gray and black color scheme with a glossy coating. The large open ear cups have a suede-like finish on the padding that gives these headphones a premium appeal. They do not look as eye-catching as the HD 600 because of their slightly bland color scheme, but the style will work for some.

7.5 Comfort
Show Help
What it is: Adjustability and degrees of freedom, pressure, stiffness and weight.
When it matters: When the headphones are going to be used for long durations.
Score components: Subjectively assigned
Sennheiser HD 650 Comfort Picture
Weight : 0.6 lbs
Clamping Force
Show Help
What it is: The force that the headphones exert on your head, once you have them on. This is purely a measurement of the force applied, which does not take into account the earpad's surface area and the resulting pressure you will feel, on or around your ears.
When it matters: The tighter the headphones, the more force they put on your head. This can get uncomfortable or cause pain and soreness during long listening sessions.
:
1.02 lbs

The HD 650 are slightly more comfortable than the HD 600. Like the previous model these headphones have large ear cups that fully encompass most ears. They are also covered in a suede-like fabric that feels good on the skin and adds to their overall comfort level. The headband design is better than the HD 600, it's not as tight, and it's better padded.

0 Controls
Show Help
What it is: The control scheme of the headphones; the number of functions provided, button layout and ergonomics as well as the quality of tactile feedback.
When it matters: If you want to control volume, pause your music or make phone calls without directly interacting with, your audio device.
Score components: Subjectively assigned
Call/Music Control : No
Volume Control : No

7.0 Stability
Show Help
What it is: How the headphones are designed to prevent them from slipping off your ears or falling off your head.
When it matters: If you plan on using the headphones while doing sports or other physical activities that requires a lot of movement.
Score components: Subjectively assigned
Sennheiser HD 650 Stability Picture

The HD 650 are a little less stable than the HD 600 because they have less tension in the headband. They stay in place during casual listening sessions and are stable enough for some low-intensity, physical activity. However, they are not designed for sports, and the slightly looser headband may cause them to fall off your head if used while running. The detachable cable will also pull the headphones of your head before it disconnects from the ear cups, which is slightly disappointing.

5.3 Portability
Show Help
What it is: The volume of space occupied by the headphones when folded into their most compact format.
When it matters: If you're often on the move and need to carry your headphones in a bag, purse , or pocket.
Score components:
Sennheiser HD 650 Portability Picture
L : 7.68 "
W : 7.09 "
H : 3.94 "
Volume : 214.21 Cu. Inches

These headphones are not designed to be very portable. They're large and bulky and do not fold into a smaller format for transport or easy storage. They also don't offer a dedicated case or pouch to carry the headphones in, which is slightly disappointing. Although the box they come in could be a substitute for a case, it's too big and impractical for regular use.

0 Case
Show Help
What it is: The provided carrying options to protect your headphones when transporting them.
When it matters: To prevent damaging your headphones, if you often carry them in your bag or pocket.
Score components: Subjectively assigned
Type : No case

7.0 Build Quality
Show Help
What it is: Durability; material quality; cheap/expensive feel.
When it matters: When the headphones are going to be used by multiple users (classes/studios), by children, in tough conditions, on a daily basis, or for exercise.
Score components: Subjectively assigned
Sennheiser HD 650 Build Quality Picture

The build quality of these headphones is above-average with a few minor flaws. The headband is the weakest part of their design. The metal frame is connected to the earcup by a fragile-looking joint that's susceptible to breaking under moderate physical stress.

Cable
Sennheiser HD 650 Cable Picture
Detachable : Yes
Length : 9.84 ft
Connection : 1/4" TRS

Comes with a 1/4" TRS-TRS cable, with no inline controls.

Front
Angled
Side
Rear
Top
8.2

Sound

Show Help
What it is: How accurately the audio is reproduced. The tests are performed with the headphones' most commonly used features enabled (noise-cancelling, wireless, etc.)
Score components:
Sennheiser HD 650 Frequency Response

The HD 650 deliver an excellent, open audio reproduction with minimal harmonic distortion. Their sound quality is similar to the HD 600 with better bass and treble. Instruments and vocals sound just as great if a little more emphasized, and the high frequencies are a bit less sharp. The bass packs a decent punch, but might still be a little lacking for some listeners, and the soundstage is slightly less spacious than the HD 600

8.2 Bass
Show Help
What it is: Frequency Response from 20Hz-250Hz
When it matters: When the material is heavy on bass frequencies, such as those of kick drums and bass guitar.
Score components:
Sennheiser HD 650 Bass
Std. Err.
Show Help
What it is: The amount of deviation (weighted standard error) in bass frequency response (20Hz-250Hz) as compared to a target response that would sound perfectly balanced to most people.
When it matters: When a balanced and neutral (reference) bass performance is desired.
Good value: <4dB
Noticeable difference: 0.1dB
:
3.38 dB
Low-Frequency Extension
Show Help
What it is: The lowest frequency at which the frequency response reaches -3dB of the target response.
When it matters: Shows how extended the bass is.
Good value: <40Hz
Noticeable difference: 5Hz
:
42.69 Hz
Low-Bass
Show Help
What it is: The average amount of over/under-emphasis in frequency response from 20Hz-60Hz.
When it matters: Kick drums and low frequency effects get their 'thump' from this range. Mostly felt than heard.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-4.89 dB
Bass
Show Help
What it is: The average amount of over/under-emphasis in frequency response from 60Hz-120Hz.
When it matters: Melodic bass instruments have most of their fundamental frequencies in this range. This is where the 'body' and 'punch' of the bass sits.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-0.39 dB
High-Bass
Show Help
What it is: The average amount of over/under-emphasis in frequency response from 120Hz-250Hz.
When it matters: Most instruments get their warmth and full-ness from this range. When over-emphasized, mixes tend to get muddy and boomy.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
2.43 dB

Good Bass Range performance. The overall Bass response is slightly more emphasized than the HD 600. High-bass is elevated by about 3dB, which adds a bit of warmth to the sound. However, low-bass, is still underemphasized by about 5dBs. This gives the headphones a warm and neutral bass response that lack a little low-end rumble.

8.6 Mid
Show Help
What it is: Frequency Response from 250Hz-2.5KHz
When it matters: When the material is heavy on mid-range frequencies. This is the case for the majority of audio content.
Score components:
Sennheiser HD 650 Mid
Std. Err.
Show Help
What it is: The amount of deviation (weighted standard error) in mid frequency response (250Hz-2.5KHz) as compared to a target response that would sound perfectly balanced to most people.
When it matters: When a balanced and neutral (reference) mid performance is desired.
Good value: <4dB
Noticeable difference: 0.1dB
:
1.85 dB
Low-Mid
Show Help
What it is: The average amount of over/under-emphasis in frequency response from 250Hz-500Hz.
When it matters: Most instruments have their fundamentals or low harmonics in this range. Over-emphasis in this range sounds boxy. Under-emphasis, thins out the vocals and lead instruments.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
2.44 dB
Mid
Show Help
What it is: The average amount of over/under-emphasis in frequency response from 500Hz-1KHz.
When it matters: This range is occupied mostly by upper harmonics. Over-emphasis sounds forward and honky. Under-emphasis pushes instruments to the back of the mix.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
1.84 dB
High-Mid
Show Help
What it is: The average amount of over/under-emphasis in frequency response from 1KHz-2.5KHz.
When it matters: Most instruments, especially vocals, get their intensity and clarity from this range. Over-emphasis sounds harsh, under-emphasis sounds weak and distant.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
0.67 dB

Excellent Mid Range performance. The response is virtually flat throughout, albeit slightly emphasized by about 2dBs in Low-mid and Mid.

8.2 Treble
Show Help
What it is: Frequency Response from 2.5KHz-20KHz
When it matters: When the material is heavy on high-range frequencies, such as voice, cymbals, and any other material where brightness, brilliance and airiness is desired.
Score components:
Sennheiser HD 650 Treble
Std. Err.
Show Help
What it is: The amount of deviation (weighted standard error) in treble frequency response (2.5KHz-20KHz) as compared to a target response that would sound perfectly balanced to most people.
When it matters: When a balanced and neutral (reference) treble performance is desired.
Good value: <4dB
Noticeable difference: 0.1dB
:
3.17 dB
Low-Treble
Show Help
What it is: The average amount of over/under-emphasis in frequency response from 2.5KHz-5KHz.
When it matters: Almost all instruments rely on this range for their presence, detail, and articulation. Over-emphasis can sound harsh and painful. Under-emphasis hurts the comprehensibility of vocals and lead instruments.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-0.17 dB
Treble
Show Help
What it is: The average amount of over/under emphasis in frequency response from 5KHz-10KHz.
When it matters: This is the sibilance range. Cymbals, vocals, and lead instruments rely on this range for brightness and presence. Over-emphasis sounds piercing and painful, under-emphasis sounds dull and lispy.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-0.94 dB
High-Treble
Show Help
What it is: The average amount of over/under-emphasis in frequency response from 10KHz-20KHz.
When it matters: This range gives brilliance and airiness to the sound. Over-emphasis sounds hissy, under-emphasis sounds closed-up and lifeless.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
1.16 dB

Great Treble Range performance. The response is balanced and consistent. Although the Treble Range is slightly better than that of the HD 600, high-treble is sill slightly hyped.

8.0 Soundstage
Show Help
What it is: Soundstage qualities are not inherent to the audio content, the headphones have to 'create' them rather than 'reproduce' them. They determine whether the sound is perceived to be coming from inside or in front of the head, how open and spacious the soundstage is, how much the headphones acoustically interact with the environment, and how strong the phantom center is.
When it matters: When an accurately produced, large and spacious soundstage, similar to that of a stereo loudspeaker setup is desired.
PRTF Error
Show Help
What it is: The average amount of deviation in Pinna-Related Transfer Function of the headphones, compared to that of a loudspeaker. Whether the soundstage is perceived to be unnatural, located inside or in front of the head, is dependent on this quality. The more the headphones activate the HRTF resonances of the ear (similar to what loudspeakers do), the more the soundstage will be pulled out from inside the listener's head. This quality affects both stereo and mono content.
When it matters: When a natural, in-the-front soundstage is desired, similar to that of a loudspeaker.
Good value: <5
Noticeable difference: 0.5
:
4.83 dB
Openness
Show Help
What it is: How open the headphones are, and how open and spacious they sound. This quality affects both stereo and mono content. This test differentiates between acoustically and electronically produced crosstalk and only takes the acoustically generated crosstalk into account. This value is the inverse of the Noise Isolation test score.
When it matters: When an open, wide and roomy sound is desired. A value of 10 indicates a fully open headphone, and a value of 0 indicates a fully closed headphone.
Good value: >7.5
Noticeable difference: 0.5
:
8.9
Acoustic Space Excitation
Show Help
What it is: How loud the headphones are, and how much they excite their environment acoustically. If the headphones are loud and open enough, the sound leaking from the headphones takes some of the characteristic of its environment (reflections/reverb) before reflecting back into the open headphones and to the listener's ears. This quality affects both stereo and mono content. This value is the inverse of the Leakage test score.
When it matters: When an open, wide and roomy sound is desired.
Good value: >7.5
Noticeable difference: 0.5
:
7.3
Correlated Crosstalk
Show Help
What it is: How strong and solid the phantom center is. This is mostly a stereo quality and its effects on mono content are minimal. This test is sensitive to the phase of the crosstalk and whether it is produced acoustically or electronically.
When it matters: When a true reproduction of the stereo image is desired. A value of 0 indicates no crosstalk, or that the existing crosstalk is not correlated enough to affect the phantom center. A negative score means the crosstalk is out of phase with the original signal, resulting in a slightly wider stereo image at the expense of creating a 'hole' at the center of the stereo field. A positive score means the crosstalk is in phase and positively affecting the phantom center.
Good value: >1dB
Noticeable difference: 0.3dB
:
0.0 dB

Very good soundstage. The large and deep drivers of these headphones create a decent HRTF response, which tends to pull the soundstage out from the inside the listener's head, and bring it to the front. However, even though they do not perform as well the HD 800 S and a little less open than the HD 600, they provide a very spacious sound with a good soundstage.

7.8 Imaging
Show Help
What it is: Imaging qualities are inherent to the audio content, the headphones have to 'reproduce' them rather than 'create' them. They determine how accurately the objects are positioned in the stereo image, and how transparent the imaging is.
When it matters: When accurate positioning of the objects in the stereo image, and clear and transparent imaging is desired.
Sennheiser HD 650 Phase Response
Phase Error
Show Help
What it is: The average amount of deviation in the phase, from the ideal flat response.
When it matters: When an accurate and transparent imaging is desired.
Good value: <60°
Noticeable difference: 10°
:
39.59 °
Driver Mismatch (Amplitude)
Show Help
What it is: The Left/Right balance of our test unit, that is, the amount of amplitude difference between the left and right drivers. This is not a design test, but a marker for manufacturing tolerance and ergonomics.
When it matters: When a properly balanced stereo image and low manufacturing tolerance is desired. A poor score indicates a noticeable difference in level between the left and right drivers.
Good value: <0.3dB
Noticeable difference: 0.1dB
:
0.89 dB
Driver Mismatch (Frequency)
Show Help
What it is: The amount of difference (Std. Err.) between the frequency response of the left and right drivers of our test unit. This is not a design test, but a marker for manufacturing tolerance and ergonomics.
When it matters: When an even and stable stereo image, as well as a low manufacturing tolerance, is desired. A poor score indicates there may be 'holes' in the stereo image at certain frequencies.
Good value: <2dB
Noticeable difference: 0.1dB
:
1.39 dB
Driver Mismatch (Phase)
Show Help
What it is: The amount of difference (Std. Err.) between the phase response of the left and right drivers of our test unit. This is not a design test, but a marker for manufacturing tolerance and ergonomics.
When it matters: When an even and stable stereo image, as well as a low manufacturing tolerance, is desired. A poor score indicates there may be inaccuracies in the stereo image reproduction at certain frequencies.
Good value: <90°
Noticeable difference: 30°
:
48.44 °

Very good imaging. The phase response of these headphones is great, which translates into optimum depth and transparency. However, the drivers of this test unit were a little less matched compared to the reviewed HD 600 unit. This slightly affects imaging but not enough to be noticeable, for most listeners.

8.3 Total Harmonic Distortion
Show Help
What it is: The subtle, unwanted frequencies (harmonics) produced alongside the intended frequencies.
When it matters: When clean and pure sound reproduction is desired, though its effect is not as noticable as frequency response.
Score components:
Sennheiser HD 650 Distortion
Weighted THD @ 90
Show Help
What it is: The overall amount of harmonic distortion measured at 90dB SPL. To make the score more perceptually relevant, more weight is given to the higher frequencies.
When it matters: How pure the sound is at moderate listening levels.
Good value: <0.100
Noticeable difference: 0.1
:
0.028
Weighted THD @ 100
Show Help
What it is: The overall amount of harmonic distortion measured at 100dB SPL. To make the score more perceptually relevant, more weight is given to the higher frequencies.
When it matters: How pure the sound is at loud listening levels.
Good value: <0.300
Noticeable difference: 0.1
:
0.262

Very good performance. The overall amount of harmonic distortion is lower than the HD 600's distortion and is barely noticeable, even at higher volumes. However, the amount of harmonic distortion in the Bass Range is slightly elevated, and has a more pronounced spike at 30Hz.

1.7

Isolation

Show Help
Score components:

The open-back design of the HD 650  encourages leakage to improve sound quality. However, this means they leak a lot and will disturb the people around you at moderate volumes, even on a bus. They also won't block any ambient noise from seeping into your audio and won't fare well in loud environments or on a noisy commute.

1.1 Noise Isolation
Show Help
What it is: How much outside noise is blocked out by putting the headphones on.
When it matters: If the headphones are going to be used in a noisy envinronment (airplane, subway, etc.)
Score components:
Sennheiser HD 650 Noise Isolation
Overall Attenuation
Show Help
What it is: The overall amount of environmental noise reduction in dB.
When it matters: In loud envinronments like planes, trains, offices, etc.
Good value: <-20dB
Noticeable difference: 1dB
:
-4.0 dB
Bass
Show Help
What it is: The overall amount of noise isolation in the bass range (20Hz-250Hz).
When it matters: When the outside noise is bass-heavy, like in airplanes.
Good value: <-15dB
Noticeable difference: 1dB
:
0.13 dB
Mid
Show Help
What it is: The overall amount of noise isolation in the mid-range (250Hz-2.5KHz).
When it matters: When the environment's noise is mid-heavy, like in an office.
Good value: <-15dB
Noticeable difference: 1dB
:
0.26 dB
Treble
Show Help
What it is: The overall amount of noise isolation in the treble range (2.5KHz-20KHz).
When it matters: When the environment's noise is treble-heavy. Although uncommon, areas with sharp sounds fall under this category.
Good value: <-30dB
Noticeable difference: 1dB
:
-13.52 dB

Poor isolation. These headphones don't isolate any sound below 2KHz. Above 2KHz, they perform poorly, failing to deliver more than 10dB of overall attenuation in the Treble Range.

2.7 Leakage
Show Help
What it is: The amount of sound bleeding out of the headphones.
When it matters: When the listener doesn't want people around them (in office, recording studio, etc.) to hear what is being listened to.
Score components:
Sennheiser HD 650 Leakage
Overall Leakage @ 1ft
Show Help
What it is: The amount of sound leakage heard 1 foot away from the user, while the user is listening to a 100dB SPL signal.
When it matters: When you don't want people hear what you are listening to.
Good value: <35dB
Noticeable difference: 1dB
:
56.72 dB

Poor leakage. These open headphones leak a lot of sound throughout a broad range of frequencies. The leakage starts to become noticeable around 300Hz and remains so up to 20KHz.

0

Active Features

Show Help
What it is: Headphones with active components that require a battery. This includes noise cancelling and wireless headphones that actively reduce noise or transmit audio via a wireless connection.
When it matters: How suitable the power and wireless specifications of an active headphone will be, depending on your listening habits. The range and/or discharge time of the active headphone you select will be important if you're often on the move or have long uninterrupted listening sessions.
Score components:

No active features.

0 Wireless
Show Help
What it is: Headphones that offer a cable-free listening experience over a wireless network, typically via Bluetooth or radio frequency.
When it matters: If you don't want to be limited by the length of an audio cable. This means having the freedom to move around in your home or office with a much greater range than an audio cable could provide, especially, if the Bluetooth source is heavy or difficult to carry.
Type
Show Help
What it is: The type and version of the wireless network, the headphones use to connect to the audio source. This could either be Bluetooth or radio frequency.
When it matters: The Bluetooth version will determine how compatible the headphones are with your Bluetooth enabled devices. Typically, newer Bluetooth versions are backward compatible with older ones but may lack the additional features that more recent Bluetooth protocols provide.
:
N/A
Obstructed Range
Show Help
What it is: The range that the wireless headphones can reach before dropping any audio when the Bluetooth source was placed in another room.
When it matters: If you can't or prefer not to carry your Bluetooth source on you, while listening to your audio in an indoor environment. Although, the obstructed wireless range will slightly depend on your home or office layout.
Good value: >35ft
Noticeable difference: 5ft
:
N/A
Line of Sight Range
Show Help
What it is: The range that the wireless headphones can reach before dropping any audio when in direct line of sight of the Bluetooth device.
When it matters: If you can't or prefer not to carry your Bluetooth source on you, while listening to your audio in a large and open environment.
Good value: 170ft or more
Noticeable difference: 10ft
:
N/A
NFC
Show Help
What it is: Near Field Communication technology that allows you to quickly, pair your headphones with your Bluetooth and NFC-enabled device.
When it matters: This makes pairing with an NFC-enabled device a lot easier than the typical and often tedious hold-to-pair procedure that most wireless headphones have.
:
No

0 Battery
Show Help
What it is: The power source of your headphones. All headphones with active features have a battery that will deplete over time.
When it matters: To continue using the active features of your headphones. Some models lose features or switch off completely when the battery is drained, which limits what you can do with them until the next charge.
Score components:
Battery Type
Show Help
What it is: The type of battery that the headphones use. Usually AAA or embedded, Li-ion rechargeable batteries.
When it matters: When your headphones run out of power. Rechargeable batteries usually charge via the headphones Micro-USB port whereas AAA batteries have to be replaced or charged with an external device.
:
N/A
Battery Life
Show Help
What it is: The amount of time it takes for a headphones' battery to be completely drained. Battery life will vary depending on the active features used and volume level.
When it matters: For active headphones that connect wirelessly, have noise cancellation or other audio-enhancing features, that cease to work once the battery is dead.
Good value: >10hrs
Noticeable difference: 0.5hrs
:
0 hrs
Charge Time
Show Help
What it is: The amount of time your active headphones have to be connected to a power source to charge from 0 to a 100%. However, charging time will vary depending on your power source.
When it matters: To be able to use the active features of your headphones. Especially, wireless ones that completely switch off and need to be recharged when the battery is dead.
Good value: 2h or less
Noticeable difference: 0.25h
:
N/A
Auto-off
Show Help
What it is: A feature that turns off the headphones, after a set time, when they're not in use.
When it matters: To prolong battery life when the headphones are not being used, or if you forget to manually turn off your headphones.
:
N/A
Audio while charging
Show Help
What it is: Some active headphones remain usable while charging. They continue to stream audio and do not disable other active features.
When it matters: This makes sure that your headphones's battery are not being drained when your relatively close to a power source. However, this means wireless headphones will need a wired connection to the power source during the charging process.
:
N/A

0 App Support
Show Help
What it is: The additional app provided to enhance your listening experience. They typically deliver a set of practical features that give you more control over the sound, noise cancelling and effects that the headphones produce.
When it matters: An app with a lot of features allows you to customize your listening experience to suit your taste and preferences. For example, additions like an equalizer can give you more bass or treble and room effects can simulate a bigger Soundstage in closed back headphones.
Score components: Subjectively assigned

No compatible app.

In the box

Sennheiser HD 650 In the box Picture

  • Sennheiser HD 650 Headphones
  • 1/8" to 1/4" Adapter
  • Audio cable
  • Manual

Conclusion Amazon CHECK PRICE Right

5.2Mixed Usage
Show Help
What it is This is the combination of the different use cases to evaluate how versatile the headphones are. Therefore an everyday headphone should be well-rounded enough to adapt to most situations and environments without significant losses in sound quality, design ergonomics or isolation.
The HD 650 are built for critical listening and appreciating high-quality audio. They're are not good everyday headphones.
8.1Critical Listening
Show Help
What it is The level of audio fidelity a headphone can reproduce. Therefore a balanced and true representation of bass, mids, treble, soundstage and imaging, as well as a comfortable listening experience, is essential for critical listening.
Score components:
The HD 650 are great headphones for critical listening. Their open design creates a spacious soundstage and their frequency response is almost flat.
3.5Commute/Travel
Show Help
What it is How well the headphones handle the loud environments involved in commuting or traveling. Therefore your listening experience should be comfortable, hassle-free and as isolated from noise as possible.
Not made for commuting. They're open and do not block any ambient noise.
5.0Sports/Fitness
Show Help
What it is How well-adapted the headphones are, to use while doing sports or strenuous exercise. Therefore the headphones should not be too cumbersome and deliver a stable and comfortable listening experience.
Not meant for sports use. Too bulky and may require an amp so they won't be portable enough.
4.2Office
Show Help
What it is How well the headphones can deliver a comfortable and isolated listening experience in an office-like environment. They should not leak much and should block the noise of a busy office.
Not made for office use. Unless you work in an isolated environment the leakage will distract your colleagues.
5.2Studio Recording
Show Help
What it is How effective the headphones are in a studio recording environment. Therefore sound quality should be good, and leakage should be minimal, to not add noise to the recording. They should also be durable for continuous and repeated studio use.
Open back design not for studio recording. Great sound but intentionally leaky.
Questions Found an error?

Let us know what is wrong in this question or in the answer.

Email:

Questions & Answers

1 ANSWERED QUESTIONS
1
Why don't your reviews of high quality headphones like the Sennheiser 650s mention amplifiers or DACs? Do you test the headphones with headphone amps? Shouldn't you inform consumers that they would need to purchase an amp to appropriately drive these headphones?

We are planning on testing the impedance and drivability of the headphones hopefully sometime in the coming year. However, our immediate priority is to improve our current test bench so our scores correspond better to the user's subjective experience.

Once we have our test bench solidified we will explain our testing procedure and philosophy fully in a couple of articles and videos. But just to give you some information for now; we are using an RME UFX as our audio interface/preamp, and a Schiit Ragnarok as our headphones amp. Our new test bench calculates the final results by averaging 30 measurements that were gathered using a variety of measurement devices in order to account for different head shapes/sizes and headphone positioning preferences.

Questions Have a question?

Before asking a question, make sure you use the search function of our website. The majority of the answers are already here.

Current estimated response time, based on # of pending questions: 3.0 business days.

:
:
A valid email is required. We answer most questions directly by email to prevent cluttering the site.