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What makes the HiFiMan HE-R9 headphone stand out in a crowded lineup? These 156 specs & features — especially general information, dimensions & weight, materials & build & audio performance — are a good start.
Why is
HiFiMan HE-R9
better than
other headphones
?
Quick Take
The essentials that matter—nothing extra
A fast snapshot of the HiFiMan HE-R9, covering its standout specification and what you can expect right out of the box.
HiFiMan HE-R9
HiFiMan HE-R9 is a closed-back over-ear headphone designed for immersive home listening and portable hi-fi setups. It features a dynamic driver with a topology diaphragm that helps deliver detailed sound with strong bass and smooth highs. With large earcups and a comfortable headband, it is built for long listening sessions while maintaining a distinctive premium design.
Specifications & Facts
156
Specs measured. Drama avoided.
Looking to upgrade? Check the HiFiMan HE-R9 headphone with full details: price, 156 features, pros and cons, and how it stacks up vs top headphones.
General Information
17
HiFiMan HE-R9
Detachable Cable
Does it have a detachable cable?
Yes
0Votes
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Includes a detachable cable, which allows easy replacement or the use of aftermarket cables and adapters.
This adds versatility for different connectors and can extend the product's useful life.
Cable can be detached for replacement or portability.
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Product Name
What is the product name?
0
HiFiMan HE-R9
0
Votes
HiFiMan HE-R9
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The official name of the headphones.
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HiFiMan HE-R9
Headphone Type
What type of headphones are these?
0
HiFiMan HE-R9
0
Votes
Over Ear
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The general type of headphones.
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Form Factor
What is the form factor?
0
HiFiMan HE-R9
0
Votes
Wired, Wireless
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The main physical form factor.
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Fit Style
What is the fit style?
0
HiFiMan HE-R9
0
Votes
Closed Back
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The fit and enclosure style of headphones.
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Age Group Recommendation
What age group is recommended?
0
HiFiMan HE-R9
0
Votes
Adult
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Recommended age group for product use.
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Series Name
What series is it part of?
0
HiFiMan HE-R9
0
Votes
HE Series
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The series or family line the headphones belong to.
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Release Year
What is the release year?
0
HiFiMan HE-R9
0
Votes
2022
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Year the headphones were first released.
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Limited Edition
Is it a limited edition?
No
0Votes
HiFiMan HE-R9
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Shows if product is a limited edition release.
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Country of Origin
What is the country of origin?
0
HiFiMan HE-R9
0
Votes
China
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Country where the product was designed or manufactured.
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Warranty Period
What is the warranty period?
0
HiFiMan HE-R9
0
Votes
1 Year
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Duration of manufacturer’s warranty.
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Intended Use
What is the intended use?
0
HiFiMan HE-R9
0
Votes
Music, Travel
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The primary intended application for the headphones.
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Foldable Design
Do they have a foldable design?
No
0Votes
HiFiMan HE-R9
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Indicates if headphones can be folded for storage.
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Replaceable Earpads
Are the earpads replaceable?
Yes
0Votes
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Indicates if ear pads can be replaced.
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Replaceable Headband
Is the headband replaceable?
No
0Votes
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Indicates if headband can be replaced.
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Replaceable Cable
Is the cable replaceable?
Yes
0Votes
HiFiMan HE-R9
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Indicates if cable can be replaced with another.
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Certification Standard
What certifications are included?
0
HiFiMan HE-R9
0
Votes
CE, FCC, RoHS
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Compliance standards product meets.
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Dimensions & Weight
16
HiFiMan HE-R9
Weight
What is the headphone weight?
0.72
lbs
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Product weight is 0.723 lbs (0.33 kg).
This gives an idea of how heavy the headphones feel during extended use.
Overall headphone weight without packaging.
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Cable Length
What is the cable length?
4.92
ft
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Cable length is 4.92 ft (1.50 m).
This length is typical for desktop use and provides reasonable reach to audio sources.
Length of the audio cable for wired use.
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Width
What is the width of the headphones?
7.87
inch
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Product width is 7.87 inch (19.99 cm).
Width helps evaluate how the headphones will fit in backpacks or storage cases.
Overall horizontal measurement of the headphones.
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Depth
What is the depth of the headphones?
3.94
inch
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Overall depth is 3.94 inch (10.01 cm).
Depth helps determine how the headphones will fit on storage shelves or in cases.
Front-to-back measurement of the headphones.
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Package Width
What is the package width?
10.63
inch
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Package width is 10.63 inch (26.99 cm).
This helps gauge how much shelf or bag space the boxed headphones will occupy.
Width of the retail package.
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Package Depth
What is the package depth?
6.69
inch
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Package depth is 6.69 inch (17.00 cm).
This, combined with package width and height, gives total boxed volume.
Depth of the retail package.
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Package Height
What is the package height?
11.02
inch
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Package height is 11.02 inch (27.99 cm).
Useful for assessing storage or shipping size.
Height of the retail package.
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Package Weight
What is the package weight?
2.2
lbs
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Package weight is 2.2 lbs (1.00 kg).
Knowing boxed weight is useful for shipping considerations and travel packing.
Total weight including packaging.
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Headband Width
What is the headband width?
1.77
inch
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Headband width measures 1.77 inch (4.50 cm).
A wider headband can distribute clamp pressure more comfortably over longer listening sessions.
Thickness of headband which affects support.
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Ear Cup Depth
What is the ear cup depth?
1.97
inch
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Ear cup depth is 1.97 inch (5.00 cm).
This depth gives an indication of how much room there is for the ear and driver spacing.
Distance from outer edge to inner pad base.
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Ear Cup Outer Diameter
What is the ear cup outer diameter?
4.33
inch
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Ear cup outer diameter is 4.33 inch (11.00 cm).
This dimension helps assess fit for larger ears and over-ear coverage.
Overall size of the ear cups.
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Clamp Force
What is the clamp force?
0.9
lbs
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Clamp force is listed as 0.9 lbs (0.41 kg) (force-equivalent), which indicates how firmly the headphones grip the head.
Moderate clamp force balances stability with comfort during longer sessions.
Pressure applied by headband on the ears.
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Height
What is the height of the headphones?
8.66
inch
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Vertical measurement from top to bottom.
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Headband Adjustability Range
What is the headband adjustability range?
1.97
inch
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Maximum adjustment range of the headband.
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Ear Cup Inner Diameter
What is the ear cup inner diameter?
2.76
inch
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Internal space of ear cups, affecting ear comfort.
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Swivel Angle
What is the swivel angle?
90
degree
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Degree of rotation for ear cups.
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Materials & Build
15
HiFiMan HE-R9
Reinforced Joints
Do the headphones have reinforced joints?
Yes
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Reinforced joints are present to improve durability at stress points such as hinges and sliders.
This typically helps the headphones withstand repeated folding and adjustments.
Indicates if stress points are reinforced for durability.
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Material
What is the main material of the headphones?
0
HiFiMan HE-R9
0
Votes
Hybrid
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Primary construction material of the headphones.
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Color Options
What are the color options?
0
HiFiMan HE-R9
0
Votes
Red
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Available colors for the headphones.
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Finish
What is the finish?
0
HiFiMan HE-R9
0
Votes
Matte
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Surface treatment of the headphone exterior.
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Ear Cushion Material
What is the ear cushion material?
0
HiFiMan HE-R9
0
Votes
Memory Foam
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Material of ear cushions that affects comfort and breathability.
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Headband Padding Material
What is the headband padding material?
0
HiFiMan HE-R9
0
Votes
Foam
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Padding type used in the headband.
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Hinges Material
What is the hinge material?
0
HiFiMan HE-R9
0
Votes
Metal
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Material used for the folding hinges.
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Cable Material
What is the cable material?
0
HiFiMan HE-R9
0
Votes
Rubber
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Construction material of the audio cable.
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Connector Material
What is the connector material?
0
HiFiMan HE-R9
0
Votes
Gold Plated
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Metal used for plug connectors.
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Water Resistance Rating
What is the water resistance rating?
0
HiFiMan HE-R9
0
Votes
IPX0
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Resistance level against water ingress.
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Sweat Resistance
Are the headphones sweat resistant?
No
0Votes
HiFiMan HE-R9
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Indicates whether headphones resist sweat damage.
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Dust Resistance
Are the headphones dust resistant?
No
0Votes
HiFiMan HE-R9
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Indicates whether headphones are resistant to dust particles.
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Scratch Resistant Coating
Do the headphones have scratch resistant coating?
No
0Votes
HiFiMan HE-R9
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Protective layer against scratches.
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UV Resistant Coating
Do the headphones have UV resistant coating?
No
0Votes
HiFiMan HE-R9
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Resistance against UV light fading or damage.
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Recyclable Materials
Are the headphones made with recyclable materials?
Yes
0Votes
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Indicates if materials are recyclable for sustainability.
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Audio Performance
21
HiFiMan HE-R9
Driver Size
What is the driver size?
50
mm
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Equipped with 50 mm drivers.
Drivers of this size commonly deliver strong dynamics and bass extension for general listening.
Diameter of the driver unit.
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Impedance
What is the impedance?
32
ohm
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Impedance is 32 ohm.
This relatively low impedance makes the headphones easy to drive from phones and portable players without a dedicated amplifier.
Electrical resistance of headphones.
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Sensitivity
What is the sensitivity?
100
dB
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Sensitivity is 100 dB.
This level means the headphones can achieve loud playback at moderate power; listen responsibly to avoid hearing damage.
Loudness produced per given input power.
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Acoustic Design
What is the acoustic design?
0
HiFiMan HE-R9
0
Votes
Closed Back
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Acoustic design is Closed Back.
A closed-back design provides better isolation and reduced sound leakage compared with open-back variants.
Headphone enclosure type.
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Low Frequency Response
What is the lowest frequency response?
15
Hz
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Low frequency response reaches 15 Hz.
Such extension indicates the headphones can reproduce very deep sub-bass notes that are often felt as much as heard.
Lowest audible frequency reproduced.
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High Frequency Response
What is the highest frequency response?
35,000
Hz
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High frequency response extends to 35000 Hz.
This suggests extended treble capability beyond typical human hearing, which can affect perceived air and detail.
Highest audible frequency reproduced.
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Dynamic Range
What is the dynamic range?
110
dB
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Dynamic range is 110 dB, indicating the span between the quietest and loudest reproducible signals.
A larger dynamic range can preserve more detail in complex recordings.
Range between softest and loudest sounds.
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Bass Enhancement Technology
What bass enhancement technology is used?
0
HiFiMan HE-R9
0
Votes
Passive Resonance
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Uses Passive Resonance to enhance bass by leveraging the enclosure and driver resonance rather than digital processing.
This approach typically yields a natural low-frequency character without added DSP coloration.
Technology that enhances bass response.
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Driver Type
What is the driver type?
0
HiFiMan HE-R9
0
Votes
Dynamic
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Type of driver technology used for sound production.
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Sound Pressure Level
What is the sound pressure level?
100
dB
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Acoustic pressure output.
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Maximum Input Power
What is the maximum input power?
2,000
mW
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Maximum power headphones can handle.
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Total Harmonic Distortion
What is the THD?
0.1
%
0Votes
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Distortion in audio output.
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Impulse Response Speed
What is the impulse response speed?
0
HiFiMan HE-R9
0
Votes
Fast
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Speed at which drivers respond to signal changes.
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HiFiMan HE-R9
Phase Coherence
What is the phase coherence?
0
HiFiMan HE-R9
0
Votes
Good
Headphone in this range
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Alignment of frequency components in phase.
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Phase Coherence on HiFiMan HE-R9
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HiFiMan HE-R9
Crosstalk
What is the crosstalk value?
-60
dB
0Votes
Headphone in this range
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Amount of signal leakage between channels.
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Crosstalk on HiFiMan HE-R9
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HiFiMan HE-R9
Sound Signature
What is the sound signature?
0
HiFiMan HE-R9
0
Votes
V-Shaped
Headphone in this range
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Tonal balance of headphone output.
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Sound Signature on HiFiMan HE-R9
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HiFiMan HE-R9
Stereo Imaging Quality
What is the stereo imaging quality?
0
HiFiMan HE-R9
0
Votes
Good
Headphone in this range
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Ability to position sound accurately in stereo field.
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Stereo Imaging Quality on HiFiMan HE-R9
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HiFiMan HE-R9
Soundstage Width
What is the soundstage width?
0
HiFiMan HE-R9
0
Votes
Moderate
Headphone in this range
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Lateral spread of perceived audio.
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Soundstage Width on HiFiMan HE-R9
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HiFiMan HE-R9
Soundstage Depth
What is the soundstage depth?
0
HiFiMan HE-R9
0
Votes
Moderate
Headphone in this range
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Front-to-back perception of audio field.
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Soundstage Depth on HiFiMan HE-R9
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HiFiMan HE-R9
Treble Enhancement Technology
What treble enhancement technology is used?
0
HiFiMan HE-R9
0
Votes
Waveguide
Headphone in this range
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Technology used to enhance treble clarity.
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Treble Enhancement Technology on HiFiMan HE-R9
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HiFiMan HE-R9
Surround Sound
Do the headphones support surround sound?
No
0Votes
HiFiMan HE-R9
Headphone in this range
Who knows?
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Indicates if headphones support surround audio.
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Surround Sound on HiFiMan HE-R9
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Supermod
