68 Highlights 34 Differences 7 Reactions 0 Likes

Sennheiser HD 400 PRO vs beyerdynamic DT 990 PRO: 68 Highlights & 34 Differences — So, Which Headphone Actually Works Better

Modern usability versus classic reliability. Decide if advanced connectivity and eco design influence your choice. Not sure which headphone to add to your setup? This headphones comparison puts Sennheiser HD 400 PRO vs beyerdynamic DT 990 PRO side by side — from app support, control customization in app, voice assistant support & detachable boom mic to what players love.

57 Points
Sennheiser HD 400 PRO
47 Points
beyerdynamic DT 990 PRO
vs

Highlights 183

No extras. Just what matters.
57 Points
vs
47 Points

Why is Sennheiser HD 400 PRO better than beyerdynamic DT 990 PRO ?

Scroll down for more facts

Sennheiser HD 400 PRO vs beyerdynamic DT 990 PRO: Which Studio Headphone Reigns Supreme?

When it comes to open-back studio headphones tailored for detailed, reference-quality sound, the Sennheiser HD 400 PRO and beyerdynamic DT 990 PRO are among the most talked-about contenders. Both headphones boast open-back designs that aim to deliver a natural, spacious listening experience perfect for critical studio work. They come equipped with wired 3.5mm connectivity and lack smart features or active noise cancellation, focusing purely on audio fidelity and build quality. Yet, the differences run deeper than design philosophy alone: the Sennheiser HD 400 PRO, released as recently as 2022, emphasizes user-friendliness with detachable proprietary cables, lightweight construction, and moderate 70Ω impedance, making them easier to drive with common audio gear. In contrast, the DT 990 PRO, a venerable model since 1985, sports a higher 250Ω impedance aimed at professional amplifiers, with a thicker clamp force and a broader frequency response up to 35 kHz, catering to audiophiles seeking extended treble details and robust studio performance.

Why the Sennheiser HD 400 PRO Stands Out in Modern Studio Use

The Sennheiser HD 400 PRO impresses with a blend of contemporary engineering and practical features tailored for today's studio professionals. One of its most notable advantages is its lightweight design at just 0.3 lbs, almost half the mass of the DT 990 PRO, which greatly enhances comfort during prolonged sessions. Additionally, the headphone employs a moderately strong clamp force of 1.1 N, securing a firm but not overly tight fit. On the audio front, the HD 400 PRO delivers high sensitivity of 120 dB and supports a maximum input power of 500 mW, providing ample headroom for dynamic range without distortion. The impedance of 70Ω makes these headphones easier to drive by portable DACs and standard audio interfaces. They are constructed with eco-friendly recyclable materials and reinforced joints, emphasizing durability and sustainability, further setting them apart from many contemporaries. The detachable proprietary cable allows easy replacements and portability, which is vital for studio professionals who constantly move between setups.

The Enduring Appeal of the beyerdynamic DT 990 PRO for Audio Purists

The beyerdynamic DT 990 PRO is a classic that remains a favorite among sound engineers and audiophiles alike due to its robust sound signature and time-tested build. Weighing in at 0.55 lbs, the DT 990 PRO carries a more substantial presence on the head, but this is balanced with a gentler clamp force of 0.88 N, offering a comfortable yet secure fit that doesn't cause fatigue. Its standout strength lies in the extended frequency range of 35,000 Hz, surpassing what most headphones offer, ideal for users seeking ultimate clarity in high treble frequencies.

With a higher impedance of 250Ω, it partners best with dedicated professional amplifiers, ensuring controlled and detailed sound reproduction for studio mixing or critical listening. Despite a lower sensitivity rated at 96 dB and maximum input power capped at 100 mW, the DT 990 PRO manages an impressively low distortion of 0.2%, resulting in crystal-clear, precise sound reproduction. The built-in cable is fixed, which may be less convenient than detachable designs but adds to its rugged, no-nonsense durability.

Quick Take

The Sennheiser HD 400 PRO excels in lightweight comfort, higher sensitivity, and modern engineering with detachable cables, making it a user-friendly option for everyday studio reference use. On the other hand, the beyerdynamic DT 990 PRO shines with a wider audio frequency spectrum and lower distortion, appealing to users who rely on professional amplifiers and desire a classic studio sound legend.

Bottom Line

If you seek modern, easily driven headphones with enhanced input capacity and a focus on comfort for long studio sessions, the Sennheiser HD 400 PRO is your go-to. However, if your workflow involves professional-grade equipment and you value an iconic headphone model with extended frequency response and detailed sound signature, the beyerdynamic DT 990 PRO remains unbeatable.

Verdict

  • Winner: Sennheiser HD 400 PRO - Offers lighter build, higher sensitivity, and easier driving impedance tailored to modern studio environments and portability.
  • Runner-up: beyerdynamic DT 990 PRO - Delivers wider frequency range and legendary sound, optimized for professional amplification and audiophile-grade listening.

Comparisons 44

Two enter. One leaves your cart.

Price comparisons

(✱) Prices may be changed at any time without further notice.

Related comparisons 44

Because one duel is never enough.

Comparisons & Facts 183

Side by side. The numbers. The features. No drama.

Want clarity before your next studio or stage buy? We broke down Sennheiser HD 400 PRO vs beyerdynamic DT 990 PRO in this headphones comparison — no fluff, just specs and real use insights.

General Information 18

Detachable Cable

Does it have a detachable cable?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Detachable Cable

Both the Sennheiser HD 400 PRO and beyerdynamic DT 990 PRO feature a detachable cable, providing users with ease of replacement and potential cable upgrades. This makes both models equally convenient in terms of cable maintenance and portability.

Cable can be detached for replacement or portability.

Release Year

What is the release year?

85 Sennheiser HD 400 PRO 0 Votes 2022

0 beyerdynamic DT 990 PRO 0 Votes 1985

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Release Year

The Sennheiser HD 400 PRO was released in 2022, whereas the beyerdynamic DT 990 PRO dates back to 1985. The newer model might include more contemporary design and technology, making Sennheiser better for modern tech needs.

Year the headphones were first released.

Foldable Design

Do they have a foldable design?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Foldable Design

Neither the Sennheiser HD 400 PRO nor the beyerdynamic DT 990 PRO offers a foldable design. This means both headphones lack compact foldability, making them less optimal for users prioritizing space-saving portability.

Indicates if headphones can be folded for storage.

Replaceable Earpads

Are the earpads replaceable?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Earpads are replaceable, allowing you to swap worn or uncomfortable pads to extend service life or change materials.

This makes long-term maintenance and refresh easier than with glued or fixed pads.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Replaceable earpads allow users to swap worn cushions, maintaining comfort and hygiene.

Indicates if ear pads can be replaced.

Replaceable Headband

Is the headband replaceable?

No 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

The headband is replaceable, which extends the lifespan of the headphones through easy repairs.

Indicates if headband can be replaced.

Replaceable Cable

Is the cable replaceable?

Yes 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

The cable is replaceable, making it easy to swap damaged cables or upgrade to a different length or connector.

This feature extends the overall service life and flexibility of the headphones.

Indicates if cable can be replaced with another.

Product Name

What is the product name?

65 Sennheiser HD 400 PRO 0 Votes Sennheiser HD 25 Plus

58 beyerdynamic DT 990 PRO 0 Votes beyerdynamic DT 990 PRO

The official name of the headphones.

Model Number

What is the model number?

76 Sennheiser HD 400 PRO 0 Votes 506908

65 beyerdynamic DT 990 PRO 0 Votes 1001629

Unique model identifier assigned by manufacturer.

Series Name

What series is it part of?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

The series or family line the headphones belong to.

Limited Edition

Is it a limited edition?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Limited Edition

Both the Sennheiser HD 400 PRO and beyerdynamic DT 990 PRO are not limited edition models. Therefore, availability for general consumers is regular for both, with no exclusivity considerations.

Shows if product is a limited edition release.

Country of Origin

What is the country of origin?

54 Sennheiser HD 400 PRO 0 Votes Romania

76 beyerdynamic DT 990 PRO 0 Votes Germany

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Country of Origin

Sennheiser HD 400 PRO is manufactured in Romania, while beyerdynamic DT 990 PRO is made in Germany. This difference reflects their distinct production origins, with beyerdynamic possibly appealing to fans of German engineering.

Country where the product was designed or manufactured.

Warranty Period

What is the warranty period?

59 Sennheiser HD 400 PRO 0 Votes 2 Years

51 beyerdynamic DT 990 PRO 0 Votes 2 Years

Duration of manufacturer’s warranty.

Dimensions & Weight 19

Clamp Force

What is the clamp force?

1.1 lbs 1 Votes
Sennheiser HD 400 PRO
0.88 lbs 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Clamp Force

The clamp force on Sennheiser HD 400 PRO is 1.1 lbs, slightly higher than 0.88 lbs on beyerdynamic DT 990 PRO. The firmer clamp on Sennheiser may ensure a more secure fit but could be less comfortable for extended wear.

Pressure applied by headband on the ears.

Clamp force on the HD 400 PRO is 1.1 N which is a snug fit for me while the DT 990 PRO is more gentle at 0.88 N but sometimes feels loose.

See more

Package Width

What is the package width?

10.63 inch 0 Votes
Sennheiser HD 400 PRO
8.66 inch 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Package width is 10.63 inch, about 27.00 cm.

Use this when checking shelf or luggage space for the boxed product.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Package width is 8.66 inch, equivalent to about 22.00 cm, important for packing and shelf space.

Width of the retail package.

Package Height

What is the package height?

9.06 inch 0 Votes
Sennheiser HD 400 PRO
9.45 inch 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Package height is 9.06 inch, which converts to 23.01 cm.

Package dimensions are useful for shipping estimates and storage planning.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Package height is 9.45 inch which converts to 24.01 cm, relevant for storage and shipping.

Height of the retail package.

Package Weight

What is the package weight?

2.2 lbs 0 Votes
Sennheiser HD 400 PRO
1.76 lbs 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Package weight is 2.2 lbs, roughly 1.00 kg.

Useful for estimating shipping costs and handling weight when traveling.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Packaging weight is 1.76 lbs, approximately 0.80 kg, helpful for shipping estimations.

Total weight including packaging.

Cable Length

What is the cable length?

1 ft 0 Votes
Sennheiser HD 400 PRO
9.8 ft 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Included cable length is 1 ft, which is about 0.30 m.

This short cable is convenient for portable use or for swapping to a longer third‑party cable if needed.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Cable length totals 9.8 ft or about 2.99 m, allowing for freedom of movement when connected to audio sources.

Length of the audio cable for wired use.

Headband Width

What is the headband width?

1.77 inch 0 Votes
Sennheiser HD 400 PRO
1.57 inch 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Headband width is 1.77 inch, roughly 4.50 cm.

A wider headband can distribute pressure more evenly across the top of the head, improving comfort.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

The headband width measures 1.57 inch (approximately 3.99 cm), contributing to head support and comfort.

Thickness of headband which affects support.

Ear Cup Depth

What is the ear cup depth?

1.97 inch 0 Votes
Sennheiser HD 400 PRO
1.57 inch 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Ear cup depth is 1.97 inch, roughly 5.00 cm.

This depth affects how much the ear sits into the cup and is helpful for assessing fit, especially for larger ears.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Ear cup depth is 1.57 inch, around 3.99 cm, sufficient to comfortably enclose the ears.

Distance from outer edge to inner pad base.

Ear Cup Outer Diameter

What is the ear cup outer diameter?

3.94 inch 0 Votes
Sennheiser HD 400 PRO
3.94 inch 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Ear Cup Outer Diameter

Both headphones have the same ear cup outer diameter of 3.94 inches, indicating a similar size and fit around the ears. Neither offers size advantage, so comfort related to ear cup size is balanced between both.

Overall size of the ear cups.

Weight

What is the headphone weight?

0.3 lbs 1 Votes
Sennheiser HD 400 PRO
0.55 lbs 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Weight

Sennheiser HD 400 PRO weighs 0.3 lbs, noticeably lighter than beyerdynamic DT 990 PRO which weighs 0.55 lbs. The lighter weight of the Sennheiser makes it potentially more comfortable for longer listening sessions.

Overall headphone weight without packaging.

The lightweight design of the Sennheiser HD 400 PRO at 0.3 lbs makes it super comfy for long studio sessions way better than the heavier DT 990 PRO.

See more

Width

What is the width of the headphones?

7.36 inch 0 Votes
Sennheiser HD 400 PRO
7.09 inch 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Total width is 7.36 inch, approximately 18.69 cm.

This helps evaluate how much lateral space the headphones occupy in a bag or on a stand.

Overall horizontal measurement of the headphones.

Depth

What is the depth of the headphones?

3.3 inch 0 Votes
Sennheiser HD 400 PRO
3.94 inch 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Overall depth is 3.3 inch, which is around 8.38 cm.

Depth is useful to know for compatibility with storage cases and whether the cups clear glasses or headgear.

Front-to-back measurement of the headphones.

Height

What is the height of the headphones?

9.64 inch 0 Votes
Sennheiser HD 400 PRO
8.27 inch 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

9.64 inch overall height is listed, which converts to 24.49 cm.

Use this to check clearance and storage needs when placing the headphones on shelves or in bags.

Vertical measurement from top to bottom.

Materials & Build 16

Reinforced Joints

Do the headphones have reinforced joints?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Reinforced Joints

Both headphones feature reinforced joints, enhancing durability and lifespan under regular use. This makes both models reliable options in terms of build strength.

Indicates if stress points are reinforced for durability.

Recyclable Materials

Are the headphones made with recyclable materials?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Recyclable Materials

Both Sennheiser HD 400 PRO and beyerdynamic DT 990 PRO use recyclable materials, making them environmentally friendly choices for eco-conscious buyers.

Indicates if materials are recyclable for sustainability.

Eco Friendly Certification

What eco friendly certification do the headphones have?

49 Sennheiser HD 400 PRO 0 Votes Other

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Eco Friendly Certification

Sennheiser HD 400 PRO has an 'Other' eco-friendly certification, while beyerdynamic DT 990 PRO provides no eco-friendly certification. This may give Sennheiser a slight edge in verified environmental responsibility.

Environmental certification of the product.

Material

What is the main material of the headphones?

89 Sennheiser HD 400 PRO 0 Votes Metal

61 beyerdynamic DT 990 PRO 0 Votes Plastic

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

The headphone material is plastic, making the design lightweight yet durable.

Primary construction material of the headphones.

Ear Cushion Material

What is the ear cushion material?

64 Sennheiser HD 400 PRO 0 Votes Velour

56 beyerdynamic DT 990 PRO 0 Votes Velour

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Ear cushions are made from velour, which provides a soft and breathable fit for extended comfort.

Material of ear cushions that affects comfort and breathability.

Connector Material

What is the connector material?

89 Sennheiser HD 400 PRO 0 Votes Gold Plated

81 beyerdynamic DT 990 PRO 0 Votes Gold Plated

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

The connector material is gold plated, which helps reduce corrosion and enhances the quality of the electrical connections for improved audio signal integrity.

Metal used for plug connectors.

Headband Padding Material

What is the headband padding material?

69 Sennheiser HD 400 PRO 0 Votes Foam

61 beyerdynamic DT 990 PRO 0 Votes Foam

Padding type used in the headband.

Hinges Material

What is the hinge material?

39 Sennheiser HD 400 PRO 0 Votes Plastic

51 beyerdynamic DT 990 PRO 0 Votes Metal

Material used for the folding hinges.

Cable Material

What is the cable material?

59 Sennheiser HD 400 PRO 0 Votes TPE

51 beyerdynamic DT 990 PRO 0 Votes TPE

Construction material of the audio cable.

Water Resistance Rating

What is the water resistance rating?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Resistance level against water ingress.

Sweat Resistance

Are the headphones sweat resistant?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates whether headphones resist sweat damage.

Dust Resistance

Are the headphones dust resistant?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Dust Resistance

Neither Sennheiser HD 400 PRO nor beyerdynamic DT 990 PRO offers dust resistance, which suggests both require careful handling in dusty environments.

Indicates whether headphones are resistant to dust particles.

Audio Performance 21

High Frequency Response

What is the highest frequency response?

22,000 Hz 0 Votes
Sennheiser HD 400 PRO
35,000 Hz 1 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
High Frequency Response

High frequency response reaches 22,000 Hz on the Sennheiser HD 400 PRO and extends to 35,000 Hz on the beyerdynamic DT 990 PRO, indicating beyerdynamic offers a wider frequency range for more detailed highs.

Highest audible frequency reproduced.

I really dig the DT 990 PRO's high frequency response of 35000 Hz, it delivers clearer treble than the 22000 Hz on the HD 400 PRO.

See more

Impedance

What is the impedance?

70 ohm 1 Votes
Sennheiser HD 400 PRO
250 ohm 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Impedance

The impedance of Sennheiser HD 400 PRO is 70 ohms, much lower than 250 ohms for beyerdynamic DT 990 PRO. Sennheiser is easier to drive from portable devices, while beyerdynamic generally requires a dedicated amplifier.

Electrical resistance of headphones.

The 70 ohm impedance on the HD 400 PRO means anyone can drive it easily with regular gear but the 250 ohm DT 990 PRO needs an amplifier, so it's more for pros.

See more

Sensitivity

What is the sensitivity?

120 dB 1 Votes
Sennheiser HD 400 PRO
96 dB 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Sensitivity

Sensitivity is higher on Sennheiser HD 400 PRO at 120 dB compared to 96 dB on beyerdynamic DT 990 PRO. The higher sensitivity of Sennheiser means it can achieve louder volume levels at the same power.

Loudness produced per given input power.

The HD 400 PRO packs more sensitivity at 120 dB, so it sounds louder and more detailed without needing too much power unlike the DT 990 PRO.

See more

Maximum Input Power

What is the maximum input power?

500 mW 1 Votes
Sennheiser HD 400 PRO
100 mW 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Maximum Input Power

Maximum input power for Sennheiser HD 400 PRO is 500 mW, significantly higher than 100 mW on beyerdynamic DT 990 PRO. This suggests the Sennheiser can handle more power, beneficial for high-volume high-power audio sources.

Maximum power headphones can handle.

I like that the HD 400 PRO can take up to 500 mW max input power which means I don't have to worry about pushing it too hard unlike the DT 990 PRO at 100 mW.

See more

Total Harmonic Distortion

What is the THD?

0.3 % 0 Votes
Sennheiser HD 400 PRO
0.2 % 1 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Total Harmonic Distortion

Total harmonic distortion is slightly higher on Sennheiser HD 400 PRO at 0.3%, compared to 0.2% on beyerdynamic DT 990 PRO. Lower distortion in beyerdynamic may result in cleaner audio performance.

Distortion in audio output.

The DT 990 PRO has lower total harmonic distortion of 0.2% compared to 0.3% on the HD 400 PRO so its sound is a bit cleaner without fuzz.

See more

Driver Size

What is the driver size?

25 mm 0 Votes
Sennheiser HD 400 PRO
45 mm 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Driver size is 25 mm, common for on-ear models and a factor in tonal character and imaging.

Smaller drivers typically offer quicker transient response but may have different bass extension compared to larger drivers.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

The size of each driver is 45 mm, which is common in professional headphones for balanced sound response.

Diameter of the driver unit.

Low Frequency Response

What is the lowest frequency response?

16 Hz 0 Votes
Sennheiser HD 400 PRO
5 Hz 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Low frequency response is 16 Hz, indicating the headphones can reproduce very deep bass below the usual hearing threshold.

Practical impact depends on the driver design and headphone sealing (passive isolation).

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Low frequency response extends down to 5 Hz, enabling reproduction of very deep bass.

Lowest audible frequency reproduced.

Sound Pressure Level

What is the sound pressure level?

110 dB 0 Votes
Sennheiser HD 400 PRO
96 dB 0 Votes
beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Sound pressure level is 110 dB, indicating high sensitivity and the ability to reach loud levels with modest power.

Exercise caution and protect hearing when listening at high volumes.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Sound pressure level is 96 dB, indicating the headphone's loudness efficiency.

Acoustic pressure output.

Crosstalk

What is the crosstalk value?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

-60 dB 0 Votes
beyerdynamic DT 990 PRO

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Crosstalk level of -60 dB reflects good channel separation, resulting in clear stereo imaging.

Amount of signal leakage between channels.

Stereo Imaging Quality

What is the stereo imaging quality?

99 Sennheiser HD 400 PRO 0 Votes Excellent

90 beyerdynamic DT 990 PRO 0 Votes Excellent

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Stereo imaging quality is excellent, providing precise placement of instruments and vocals in the soundstage.

Ability to position sound accurately in stereo field.

Soundstage Depth

What is the soundstage depth?

89 Sennheiser HD 400 PRO 0 Votes Deep

80 beyerdynamic DT 990 PRO 0 Votes Deep

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Deep soundstage depth enhances the listening experience by providing spatial cues that make audio feel more three-dimensional.

Front-to-back perception of audio field.

Driver Type

What is the driver type?

39 Sennheiser HD 400 PRO 0 Votes Dynamic

31 beyerdynamic DT 990 PRO 0 Votes Dynamic

Type of driver technology used for sound production.

Connectivity & Compatibility 19

Connector Plug Type

What is the connector plug type?

39 Sennheiser HD 400 PRO 0 Votes 3.5mm

31 beyerdynamic DT 990 PRO 0 Votes 3.5mm

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Connector Plug Type

Connector plug type for both the Sennheiser HD 400 PRO and beyerdynamic DT 990 PRO is 3.5mm, the standard audio jack, ensuring wide compatibility with many devices.

Type of physical connector for wired use.

Connection Type

What is the connection type?

19 Sennheiser HD 400 PRO 0 Votes Wired

11 beyerdynamic DT 990 PRO 0 Votes Wired

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Connection Type

Both headphones use wired connection types only, meaning no wireless functionality is present on the Sennheiser HD 400 PRO or beyerdynamic DT 990 PRO.

Defines whether headphones connect via cable, wireless, or both.

Detachable Cable Connector Type

What detachable cable connector is used?

29 Sennheiser HD 400 PRO 0 Votes Proprietary

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Detachable Cable Connector Type

Sennheiser HD 400 PRO uses a proprietary connector type for detachable cables, while beyerdynamic DT 990 PRO does not specify a detachable cable connector type, potentially limiting cable options for beyerdynamic users.

Connector type used for detachable cables.

Wired Connector Gold Plated

Are the wired connectors gold-plated?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

The wired connector is gold plated, which helps resist corrosion and can improve long-term contact reliability.

Gold plating is commonly used to maintain stable signal transfer at the plug.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

The wired connector is gold plated, enhancing durability and signal quality.

Indicates if wired connectors are gold-plated for durability.

Wired Mode Support

Do the headphones support wired mode?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Wired mode support means the headphones can always be connected with a cable, ensuring audio output independent of wireless technology limitations.

Indicates if headphones can also be used in wired mode.

Bluetooth Version

What is the Bluetooth version?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Version of Bluetooth supported.

Bluetooth Profiles Supported

What Bluetooth profiles are supported?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Bluetooth profiles enabled for different functions.

NFC Pairing

Do the headphones support NFC pairing?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
NFC Pairing

NFC pairing is not supported on either the Sennheiser HD 400 PRO or beyerdynamic DT 990 PRO, indicating both require manual connection methods.

Allows one-tap NFC device pairing.

Multipoint Connectivity

Do the headphones support multipoint connectivity?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Multipoint Connectivity

Both Sennheiser HD 400 PRO and beyerdynamic DT 990 PRO do not support multipoint connectivity, so only single device connection is available on each.

Ability to connect to multiple devices simultaneously.

Wireless Range

What is the wireless range?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Maximum distance headphones can maintain a stable wireless signal.

Codec Support

What codecs are supported?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Audio codecs supported over Bluetooth.

SBC Support

Do the headphones support SBC?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates if headphones support SBC codec.

Controls & Features 17

App Support

Do the headphones have app support?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
App Support

Both models lack app support, so users do not have an associated app for updates or customization, which reduces software-driven features.

Indicates if headphones have a companion app.

Control Customization In App

Can controls be customized in the app?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Control Customization In App

Control customization within an app is not available for both the Sennheiser HD 400 PRO and beyerdynamic DT 990 PRO, restricting personalized control settings.

Ability to change control functions via app.

Voice Assistant Support

Do the headphones support voice assistants?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Voice Assistant Support

Neither Sennheiser HD 400 PRO nor beyerdynamic DT 990 PRO supports voice assistant integration, so users cannot access voice commands directly from these headphones.

Indicates support for Google Assistant, Siri, Alexa, etc.

Volume Limiter

Do the headphones have a volume limiter?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Allows setting a maximum volume for hearing protection.

Call Answer Controls

Do the headphones support call answering on-device?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates if calls can be answered using headphone controls.

Gesture Controls

Do the headphones support gesture controls?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates if gestures like swipe or tap are supported.

Touch Sensitivity Adjustment

Do the headphones allow touch sensitivity adjustment?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates if touch control sensitivity can be adjusted.

Programmable Buttons

Do the headphones have programmable buttons?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Allows users to assign functions to buttons.

Control Lock Mode

Do the headphones have control lock mode?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Prevents accidental input when controls are touched.

Button Feedback Type

What is the button feedback type?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Type of feedback provided when using controls.

Auto Pause Play

Do the headphones auto-pause and play?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Automatically pauses when removed and resumes when worn.

Customizable EQ

Do the headphones support customizable EQ?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
vs
beyerdynamic DT 990 PRO
Customizable EQ

Customizable EQ is not present in either the Sennheiser HD 400 PRO or beyerdynamic DT 990 PRO, meaning audio profiles are fixed by default and cannot be tuned via software.

Indicates if sound signature can be customized via equalizer.

Microphone & Calling 14

Detachable Boom Mic

Do the headphones have a detachable boom mic?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates if headphones support a detachable boom mic.

Built In Microphone

Do the headphones have a built-in microphone?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Built-in microphone is not included, so these headphones are primarily for audio playback rather than communication.

Indicates if the headphones have a built-in microphone.

Noise Cancelling Microphone

Is the microphone noise cancelling?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

These headphones do not include a noise cancelling microphone, so ambient noise might be noticeable during calls.

Indicates if microphone has active noise cancelling.

Microphone Type

What is the microphone type?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Type of microphone pickup pattern.

Number Of Microphones

How many microphones are included?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Total microphones used for pickup and processing.

Microphone Position

What is the microphone position?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Location of microphone on the headphones.

Microphone Sensitivity

What is the microphone sensitivity?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Loudness pickup capability of microphone.

Microphone Noise Floor

What is the microphone noise floor?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Level of background noise the mic inherently produces.

Voice Pickup Range

What is the voice pickup range?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Distance from which the mic can pick up voice clearly.

Beamforming Microphone

Does the microphone support beamforming?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Uses multiple mics to focus on voice direction.

Echo Cancellation

Do the headphones support echo cancellation?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Reduces echo during calls.

Wind Noise Reduction

Do the headphones reduce wind noise?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Minimizes wind interference during outdoor use.

Noise Control 10

ANC Microphone Count

How many ANC microphones are used?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Number of microphones dedicated to ANC processing.

ANC Level Adjustment

Can ANC levels be adjusted?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Whether ANC intensity can be adjusted.

Adaptive Sound Control

Do the headphones feature adaptive sound control?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Automatically adjusts noise control based on environment.

Automatic ANC Adjustment

Does ANC adjust automatically?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

ANC adjusts automatically without user input.

Ambient Noise Detection

Do the headphones detect ambient noise?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sensors detect surrounding noise levels.

Passive Noise Isolation

Do the headphones provide passive noise isolation?

Yes 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Passive noise isolation is present, meaning the physical ear seal reduces external noise without active electronics.

Good passive isolation improves perceived bass and reduces the need for high volume in noisy environments.

Physical sealing and padding to block noise.

Active Noise Cancellation

Do the headphones support active noise cancellation?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates if the headphones have ANC technology.

Passive Seal Quality

What is the passive seal quality?

69 Sennheiser HD 400 PRO 0 Votes Good

11 beyerdynamic DT 990 PRO 0 Votes Poor

Quality of physical seal for blocking noise.

Transparency Mode Level Adjustment

Can transparency levels be adjusted?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Allows adjustment of transparency mode strength.

Wind Noise Reduction For ANC

Does ANC reduce wind noise?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Reduces wind interference in ANC mode.

Battery & Power 18

Replaceable Battery

Is the battery replaceable?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

The battery is not user-replaceable.

If battery service is needed, professional service or manufacturer support is likely required.

Indicates if the battery can be replaced.

Battery Type

What type of battery does it use?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

The kind of rechargeable battery used.

Battery Capacity

What is the battery capacity?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Battery capacity rating.

Battery Life Playback

How long is playback per charge?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Playback time per charge.

Battery Cycle Lifespan

What is the battery cycle lifespan?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Number of charge cycles before degradation.

Battery Life Talk Time

How long is the talk time?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Talk time when used for calls.

Battery Life Standby

How long does it last on standby?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Standby time when not in use.

Charging Connector Type

What is the charging connector type?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

The type of connector used for charging.

Quick Charge Support

Does it support quick charging?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Whether quick charge is supported.

Quick Charge Time

How long for a quick charge?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Time needed for quick charge.

Charging Time Full

How long is a full charge?

Who knows? 0 Votes Sennheiser HD 400 PRO (Help us out by suggesting one!)

Who knows? 0 Votes beyerdynamic DT 990 PRO (Help us out by suggesting one!)

Time for full recharge.

Wireless Charging Support

Does it support wireless charging?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Supports wireless charging.

Smart & Extra Features 17

Sleep Mode Timer

Does it have a sleep mode timer?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Timer to automatically power off during sleep.

Find My Device Support

Does it support Find My Device?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Supports location tracking for lost headphones.

AI Upscaling Audio

Does it feature AI audio upscaling?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Enhances lower-quality audio using AI algorithms.

Head Tracking For Spatial Audio

Does it support head tracking for spatial audio?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Supports dynamic spatial audio through head tracking.

Dolby Atmos Support

Is Dolby Atmos supported?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates Dolby Atmos surround compatibility.

Hi Res Audio Certification

Is it Hi-Res certified?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Shows if headphones meet Hi-Res audio standards.

Custom Sound Profiles

Can you create custom sound profiles?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Allows personalized sound settings.

Learning EQ Adaptation

Does it adapt EQ through learning?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

AI adjusts EQ over time based on listening habits.

Hearing Protection Mode

Does it include hearing protection mode?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Limits volume peaks to protect hearing.

Sleep Tracking

Does it track sleep?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Tracks sleep patterns while wearing headphones.

Multi Device Sync

Does it support multi-device sync?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Connects to multiple devices simultaneously.

Auto Device Switching

Does it support auto device switching?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Seamlessly switches between connected devices.

Accessories 14

Carry Case

Is a carry case included?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

A carry case is included, providing protection for transport and storage.

A case helps prevent physical damage and keeps accessories organized.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

A carry case is included with the headphones, facilitating safe transport and storage.

Whether a carry case is bundled with the headphones.

Audio Cable

Is an audio cable included?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Indicates if an audio cable is provided.

Protective Pouch

Is a protective pouch included?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

A protective pouch is provided for light storage and scratch protection between uses.

It complements the carry case or can be used when a smaller storage solution is preferred.

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

Including a protective pouch allows safe carrying and prevents damage from everyday handling or travel.

Indicates if a protective pouch is included.

Cable Adapter

Is a cable adapter included?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

A cable adapter is included in the box, useful for aircraft or different jack sizes.

This improves out-of-the-box compatibility with a variety of playback systems.

Indicates if a cable adapter is provided.

Airplane Adapter

Is an airplane adapter included?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

An airplane adapter is not provided with this model, so users need to acquire one separately if needed for in-flight entertainment.

Indicates if an airplane adapter is included.

Cleaning Tool

Is a cleaning tool included?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

No cleaning tool is included, so maintenance requires external accessories or cleaning methods.

Indicates if a cleaning tool is provided.

User Manual

Is a user manual included?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

A user manual is included to guide setup, operation, and care of the headphones.

Refer to it for warranty details and recommended maintenance practices.

Indicates if a user manual is provided.

Warranty Card

Is a warranty card included?

Yes 0 Votes Sennheiser HD 400 PRO

Yes 0 Votes beyerdynamic DT 990 PRO

beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO

A warranty card comes with the headphones, supplying important warranty and support information to customers.

Indicates if a warranty card is provided.

Branding Stickers

Are branding stickers included?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Sennheiser HD 400 PRO
Sennheiser HD 400 PRO

Branding stickers are not included with the product.

There will be no extra decals supplied in the package for customization.

Indicates if branding stickers are provided.

Carrying Case Type

What type of carrying case is included?

32 Sennheiser HD 400 PRO 0 Votes Soft Case

24 beyerdynamic DT 990 PRO 0 Votes Soft Case

The type of carrying case included.

Extra Ear Tips

Are extra ear tips included?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates if extra ear tips are provided.

Extra Earpads

Are extra earpads included?

No 0 Votes Sennheiser HD 400 PRO

No 0 Votes beyerdynamic DT 990 PRO

Indicates if spare earpads are provided.

Surveys

Because hot takes deserve votes.

Sound Quality

How would you rate the overall sound quality of these headphones?

Excellent — Clear, balanced, and immersive sound
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Very good — Great clarity with rich tones
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Decent — Clear mids but limited depth
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Average — Lacks detail or balance
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Poor — Muffled or distorted sound
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Bass Performance

How strong and accurate is the bass performance on these headphones?

Powerful — Deep and clean low-end
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Strong — Noticeable and satisfying bass
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Balanced — Good mix of lows and highs
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Weak — Light or flat bass response
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Poor — No real bass presence
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Comfort and Fit

How comfortable do these headphones feel during long listening sessions?

Extremely comfortable — Feels weightless for hours
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Comfortable — Slight pressure after long use
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Average — Fine for short periods
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Tight — Uncomfortable after an hour or two
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Unpleasant — Difficult to wear for long
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Noise Cancellation

How effective is the noise cancellation feature on these headphones?

Excellent — Blocks over 90% of external noise
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Good — Reduces most background sounds
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Fair — Works in moderate noise only
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Weak — Minimal difference noticed
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Poor — Hardly blocks any noise
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Battery Life

How long does the battery last on a full charge?

Excellent — Over 40 hours
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Good — 30 to 40 hours
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Average — 20 to 30 hours
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Short — 10 to 20 hours
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Very short — Under 10 hours
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Build Quality and Durability

How durable and sturdy do these headphones feel?

Very durable — Lasts over 5 years
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Solid — Feels high-quality and strong
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Decent — Works fine but not rugged
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Weak — Shows wear within a year
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Fragile — Breaks or cracks easily
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Connectivity

How smooth and reliable is the Bluetooth or wired connection of these headphones?

Excellent — Connects instantly, never drops
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Good — Stable with rare issues
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Decent — Occasional lag or delay
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Weak — Disconnects sometimes
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Poor — Frequently loses connection
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Design and Style

How stylish and appealing do these headphones look?

Very stylish — Modern and premium design
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Attractive — Clean and sleek look
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Decent — Looks fine but simple
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Basic — Functional but plain
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Unappealing — Bulky or outdated design
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Portability

How easy is it to carry and store these headphones when not in use?

Very portable — Folds compactly and lightweight
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Easy to carry — Compact with carrying case
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Manageable — Moderate size and weight
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Bulky — Hard to pack in small bags
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Very bulky — Difficult to travel with
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Pricing

How would you describe the price of these headphones for their sound and features?

Great value for money
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Pretty good price
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Fair deal
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Kinda pricey
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO
Crazy expensive
0 Votes
Sennheiser HD 400 PRO
0 Votes
beyerdynamic DT 990 PRO

Guides 2

Files 1

Sennheiser HD 400 PRO Manual

syntex.cz
syntex.cz

Files 1

beyerdynamic DT 990 PRO Manual

equipboard.com
equipboard.com

Reviews 0

The good, the bad, and the brutally honest.

Average Rating

Sennheiser
Sennheiser
Sennheiser HD 400 PRO
Sennheiser HD 400 PRO
0 / 5 0 Reviews
beyerdynamic
beyerdynamic
beyerdynamic DT 990 PRO
beyerdynamic DT 990 PRO
0 / 5 0 Reviews

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Awards 0

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