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Stax Sr 009S Review | 93 Data compared

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  • Avg. price in UK: ~£4,620
  • Avg. price in US: ~$4,550
  • Form factor: over-ear
  • Connectivity: wired
  • Battery life: N/A hours
  • Active noise cancellation (ANC): no

Stax Sr 009S review. Compare 93 technical specifications and user reviews to see how it ranks among headphones and if it is worth buying.

3.6

Overall score

What it is: An overall evaluation of the headphones' quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best headphones on the market.

Score components:

80.0%

3.6

Technical Score

20.0%

?

User score

Poor
3.6

Technical Score

What it is: An assessment of the headphones' technical performance, covering key areas such as sound quality, noise cancelling, microphone performance, battery life, comfort, connectivity, features, and build quality.

When it matters: When you want to compare headphones based on technical performance and available features.

Score components:

52.0%

4.2

Sound

20.0%

3.7

Features

10.0%

4.0

Design

8.0%

2.9

Connectivity

6.0%

1.0

Battery

4.0%

1.1

Calls & Controls

Poor
?

User score

What it is: A rating that combines user reviews and the total number of reviews received by the headphones.

When it matters: When you want to understand how headphones perform in real listening and how reliable they are in terms of comfort, audio quality, battery life, and long-term use.

Score components:

70.0%

?

User reviews

30.0%

?

Popularity

  • 0.2
    Gaming

    Score components:

    35.0%

    0.0

    Audio latency

    25.0%

    0.0

    Low-latency game mode

    20.0%

    1.0

    Can be used as a headset

    12.0%

    0.0

    Noise-canceling microphone

    8.0%

    0.0

    Battery life

  • 0.5
    Travel

    Score components:

    28.0%

    1.0

    Active noise cancellation (ANC)

    24.0%

    0.0

    Battery life

    18.0%

    1.0

    Weight

    16.0%

    0.0

    Multipoint support

    14.0%

    0.0

    Ambient sound mode

  • 0.2
    Calls

    Score components:

    28.0%

    0.0

    Noise-canceling microphone

    24.0%

    1.0

    Can be used as a headset

    18.0%

    0.0

    Multipoint support

    16.0%

    0.0

    Battery life

    14.0%

    0.0

    Companion app

  • 1.4
    Workout

    Score components:

    28.0%

    1.0

    Weight

    24.0%

    1.0

    Water resistance

    20.0%

    4.0

    IP rating

    16.0%

    0.0

    Battery life

    12.0%

    1.0

    Can be used as a headset

  • No image
No image

Best prices in UK

    N/A~ £4,620

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Stax SR-009S is a flagship push-pull open-back circular electrostatic headphone featuring second-generation Multilayer Fixed Electrode (MLER 2) technology and gold-plated stators designed to minimize resonance. Weighing 441g (excluding the 2.5m silver-coated 6N OFC low-capacity cable), it boasts an expansive frequency response of 5Hz–42kHz, an impedance of 145kΩ at 10kHz, and a sensitivity of 101dB at 100V r.m.s. Key pros include class-leading transient speed, exceptional transparency, and a refined lower-midrange warmth compared to its predecessor, all housed in a premium machined aluminum chassis with 10-step adjustable genuine leather earpads. Major cons include a lack of physical 'slam' or impact in the bass region, a high price point requiring expensive dedicated electrostatic amplification (580V bias), and some users finding the plastic headband arc feels out of place for a luxury product.

Technical Specifications of Stax Sr 009S

Technical Score

What it is: An assessment of the headphones' technical performance, covering key areas such as sound quality, noise cancelling, microphone performance, battery life, comfort, connectivity, features, and build quality.

When it matters: When you want to compare headphones based on technical performance and available features.

Score components:

52.0%

?

Sound

20.0%

?

Features

10.0%

?

Design

8.0%

?

Connectivity

6.0%

?

Battery

4.0%

?

Calls & Controls

3.6
Stax Sr 009S has a technical score of 3.65 points, which is lower than that of 91.6% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the headphones.

When it matters: When you want to understand how headphones perform in real listening and how reliable they are in terms of comfort, audio quality, battery life, and long-term use.

Score components:

70.0%

0.0

User reviews

30.0%

1.0

Popularity

?
Popularity
What it is: An indicator based on the number of reviews received by the headphones.
When it matters: When you prefer headphones that have already been chosen and reviewed by many other users.
1.0
Stax Sr 009S has a popularity of 1 points, which is lower than 72.7% of products in this category.
Ratio quality/price

What it is: An indicator that combines the headphones' overall rating with their cost.

When it matters: When you are looking for headphones that offer a strong balance of performance, features, and price.

Score components:

60.0%

3.6

Overall score

40.0%

1.0

Price

2.9
Stax Sr 009S has a quality-to-price ratio of 2.9 points, which is lower than 99.4% of products in this category.
Active noise cancellation (ANC)
What it is: Reduces background noise using active technology
When it matters: When blocking office, travel, or aircraft noise is a priority.

Importance: HIGH

no
Stax Sr 009S does not support active noise cancellation. 27.4% of headphones support active noise cancellation.
Driver type
What it is: Type of speaker driver technology used
When it matters: When the underlying sound character and driver technology matter to you.

Importance: MEDIUM

electrostatic
Driver size
What it is: Diameter of the speaker driver unit
When it matters: When you want extra hardware context behind how the headphones may handle bass weight, scale, or overall presentation.

Importance: MEDIUM

80 mm
Stax Sr 009S uses a driver size of 80 mm, larger driver size than 97.6% of headphones and equal to 0.5% of headphones.
Number of drivers
What it is: Total number of speaker drivers per earcup
When it matters: When multi-driver designs are part of your buying criteria.

Importance: LOW

1
Stax Sr 009S uses 1 drivers, equal to 96% of headphones.
Lowest frequency
What it is: Lowest audio frequency the headphones can reproduce
When it matters: When deeper bass extension matters for your music or movie listening.

Importance: MEDIUM

Good value: <=10 Hz

5 Hz
Stax Sr 009S reaches a lowest frequency of 5 Hz, lower lowest frequency than 86.3% of headphones and equal to 10.8% of headphones.
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Noise-canceling microphone
What it is: Built-in microphone reduces background noise during calls
When it matters: When you take calls in busy spaces and want your voice to stay clearer.

Importance: MEDIUM

N/A
Can be used as a headset
What it is: Shows whether the headphones can handle voice chat and calls in addition to normal audio playback.
When it matters: When one pair needs to cover music, calls, meetings, and gaming chat.

Importance: MEDIUM

no
Stax Sr 009S is not headset-ready, while 15.3% is. 84.7% of headphones can be used as headsets.
Number of microphones
What it is: Total number of built-in microphones
When it matters: When call pickup quality and beamforming support matter to you.

Importance: LOW

Good value: >=2

0
Stax Sr 009S has 0 microphones, fewer microphones than 74.1% of headphones and equal to 25.9% of headphones.
Boom microphone
What it is: Includes detachable boom microphone for voice clarity
When it matters: When you need stronger voice clarity for gaming, streaming, or work calls.

Importance: LOW

N/A
Microphone SNR
What it is: Signal-to-noise ratio of the microphone
When it matters: When call clarity matters and you want your voice picked up more cleanly instead of buried in background hiss.

Importance: LOW

Good value: >80 dB

N/A
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Connectivity
What it is: Available connection methods (wired, wireless, Bluetooth, etc.)
When it matters: When the headphones need to match how you listen across wired and wireless devices.

Importance: HIGH

wired
Stax Sr 009S supports wired connectivity, equal to 52.6% of headphones.
Bluetooth version
What it is: Version of Bluetooth technology supported
When it matters: When wireless stability, efficiency, and feature support matter more than treating Bluetooth as a box-check spec.

Importance: MEDIUM

Good value: >=5.0

N/A
Maximum Bluetooth range
What it is: Maximum wireless operating distance from source device
When it matters: When you move around rooms and want fewer dropouts from your source device.

Importance: LOW

Good value: >=10 m

N/A
Audio latency
What it is: Delay between audio and video in wireless mode
When it matters: When you watch video or play games and need sound to stay in sync.

Importance: HIGH

Good value: <60 ms

N/A
Multipoint support
What it is: Supports simultaneous connections to multiple devices
When it matters: When you switch often between a phone and a laptop during the day.

Importance: MEDIUM

N/A
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Ambient sound mode
What it is: Allows external sounds to pass through for awareness
When it matters: When you need to stay aware of traffic, voices, or announcements.

Importance: MEDIUM

N/A
EQ support
What it is: Allows customization of sound profile via equalizer
When it matters: When the stock tuning is not enough and you want to shape bass, mids, or treble to match your taste.

Importance: MEDIUM

no
Stax Sr 009S does not support EQ customization. 23.3% of headphones support EQ.
Companion app
What it is: Dedicated mobile app for customization and updates
When it matters: When software customization, updates, and extra controls matter.

Importance: MEDIUM

N/A
Adjustable ANC levels
What it is: Allows adjustment of noise cancellation intensity levels
When it matters: When you move between quiet rooms, offices, streets, and public transport and do not want one ANC setting for every situation.

Importance: LOW

Good value: >=4

N/A
Voice assistant support
What it is: Compatible with voice assistants like Siri, Alexa, or Google Assistant
When it matters: When hands-free control is part of your daily routine.

Importance: LOW

no
Stax Sr 009S does not support voice assistants. 60.9% of headphones support voice assistants.
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Battery life
What it is: Playback time on a single charge
When it matters: When you commute, travel, or work long shifts and do not want charging breaks to interrupt listening.

Importance: HIGH

Good value: >45 hours

N/A
Battery life with ANC
What it is: Playback time with active noise cancellation enabled
When it matters: When you plan to keep noise cancellation on for most of the day.

Importance: HIGH

Good value: >40 hours

N/A
Charging time
What it is: Time required for a full battery charge
When it matters: When you often need the headphones ready again after short breaks.

Importance: MEDIUM

Good value: <=2 hours

N/A
Quick charge
What it is: Provides quick playback time with short charging period
When it matters: When a short top-up needs to deliver useful playback before you leave.

Importance: MEDIUM

N/A
Battery capacity
What it is: Total energy storage of the internal battery
When it matters: When you are estimating how much battery headroom the design may have before relying only on the official runtime claim.

Importance: MEDIUM

Good value: >=720 mAh

N/A
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Brand name
What it is: The manufacturer or brand of the product.
When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

Importance: MEDIUM

Stax
Form factor
What it is: Overall design type of the headphones (over-ear, on-ear, in-ear, etc.)
When it matters: When comfort, portability, and isolation depend on the overall headphone style.

Importance: HIGH

over-ear
Weight
What it is: Total weight of the headphones
When it matters: When long listening sessions make wearing comfort more important.

Importance: MEDIUM

Good value: <150 g

441 g
Stax Sr 009S weighs 441 g, heavier than 96.9% of headphones.
Acoustic design
What it is: Type of acoustic design (open-back, closed-back, semi-open)
When it matters: When you need the right balance of isolation, leakage, and soundstage.

Importance: HIGH

open-back
Clamp force
What it is: Amount of clamping pressure applied to the head
When it matters: When comfort and fit security matter during long sessions.

Importance: MEDIUM

?
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Stax Sr 009S vs the average headphone

  • 40 mm larger driver size
    Stax Sr 009S uses a larger driver size than the average headphone (80 mm vs 40 mm). The average headphones use a driver size of 40 mm.
    What it is: Diameter of the speaker driver unit
    When it matters: When you want extra hardware context behind how the headphones may handle bass weight, scale, or overall presentation.

    Importance: MEDIUM

    Stax Sr 009S uses a larger driver size than the average headphone (80 mm vs 40 mm). The average headphones use a driver size of 40 mm.80 mm vs 40 mm
  • 13 Hz lower bass extension
    Stax Sr 009S has a lower lowest frequency than the average headphone (5 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
    What it is: Lowest audio frequency the headphones can reproduce
    When it matters: When deeper bass extension matters for your music or movie listening.

    Importance: MEDIUM

    Good value: <=10 Hz

    Stax Sr 009S has a lower lowest frequency than the average headphone (5 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.5 Hz vs 18 Hz
  • 22,000 Hz higher treble extension
    Stax Sr 009S has a higher highest frequency than the average headphone (42,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
    What it is: Highest audio frequency the headphones can reproduce
    When it matters: When treble extension and overall frequency reach matter to you.

    Importance: MEDIUM

    Good value: >=24000 Hz

    Stax Sr 009S has a higher highest frequency than the average headphone (42,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.42000 Hz vs 20000 Hz
  • 0.29 % lower distortion
    Stax Sr 009S has a lower total harmonic distortion than the average headphone (0 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    What it is: Percentage of harmonic distortion in audio output
    When it matters: When cleaner sound reproduction matters at louder volumes.

    Importance: LOW

    Good value: <=1%

    Stax Sr 009S has a lower total harmonic distortion than the average headphone (0 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.0.01 % vs 0.3 %
  • Open-back design
    Stax Sr 009S uses an open-back design, while the average headphone does not. 9.3% of headphones have an open-back design.
    What it is: Shows whether the headphones use an open-back housing that lets air and sound pass through more freely than a closed design.
    When it matters: When you listen in quiet places and care more about spacious sound than blocking outside noise or preventing sound leakage.

    Importance: MEDIUM

    Stax Sr 009S uses an open-back design, while the average headphone does not. 9.3% of headphones have an open-back design.
  • 1.3 m more useful cable length
    Stax Sr 009S offers a more useful cable length than the average headphone (2.5 m vs 1.2 m). The average headphones have a cable length of 1.2 m.
    What it is: Length of the supplied audio cable
    When it matters: When your desk, TV, or audio setup needs more or less movement range.

    Importance: LOW

    Stax Sr 009S offers a more useful cable length than the average headphone (2.5 m vs 1.2 m). The average headphones have a cable length of 1.2 m.2.5 m vs 1.2 m
  • 15 dB SPL higher sound pressure level
    Stax Sr 009S has a higher sound pressure level than the average headphone (118 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.
    What it is: Output loudness level of the headphones, usually measured in dB. It helps compare how loud a model can play under similar conditions.
    When it matters: When you need a rough idea of how loud the headphones can get before you pair them with a weaker source.

    Importance: LOW

    Good value: >=108 dB SPL

    Stax Sr 009S has a higher sound pressure level than the average headphone (118 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.118 dB SPL vs 103 dB SPL
  • Open-back design
    Stax Sr 009S uses an open-back design, while the average headphone does not. 9.3% of headphones have an open-back design.
  • 1.3 m more useful cable length
    Stax Sr 009S offers a more useful cable length than the average headphone (2.5 m vs 1.2 m). The average headphones have a cable length of 1.2 m.
  • 40 mm larger driver size
    Stax Sr 009S uses a larger driver size than the average headphone (80 mm vs 40 mm). The average headphones use a driver size of 40 mm.
  • 13 Hz lower bass extension
    Stax Sr 009S has a lower lowest frequency than the average headphone (5 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
  • 22,000 Hz higher treble extension
    Stax Sr 009S has a higher highest frequency than the average headphone (42,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
  • 0.29 % lower distortion
    Stax Sr 009S has a lower total harmonic distortion than the average headphone (0 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
  • 15 dB SPL higher sound pressure level
    Stax Sr 009S has a higher sound pressure level than the average headphone (118 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.

Total
Design
Sound
  • 2.02x higher weight
    Stax Sr 009S is heavier than the average headphone (441 g vs 218 g). The average pair of headphones weighs 218 g.
  • Fixed cable
    Stax Sr 009S has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
  • Tangle-prone cable
    Stax Sr 009S uses a tangle-prone cable, while the average headphone is easier to manage. 64.2% of headphones use a tangle-free cable.
  • No passive noise reduction
    Stax Sr 009S does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
  • No neodymium magnet
    Stax Sr 009S does not use neodymium magnets, the average headphone does. 77.4% of headphones use neodymium magnets.
  • Not headset-ready
    Stax Sr 009S is not headset-ready, while the average headphone is. 84.7% of headphones can be used as headsets.
  • 1 fewer microphones
    Stax Sr 009S has fewer microphones than the average headphone (0 vs 1). The average headphones have 1 microphones.
  • No voice assistant support
    Stax Sr 009S does not support voice assistants, the average headphone does. 60.8% of headphones support voice assistants.
  • No passive noise reduction
    Stax Sr 009S does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
    What it is: Shows whether the headphones reduce outside noise through physical sealing, fit, and materials rather than active electronics.
    When it matters: When you want better isolation from fit and seal alone, even with ANC turned off or not available.

    Importance: MEDIUM

    Stax Sr 009S does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
  • 2.02x higher weight
    Stax Sr 009S is heavier than the average headphone (441 g vs 218 g). The average pair of headphones weighs 218 g.
    What it is: Total weight of the headphones
    When it matters: When long listening sessions make wearing comfort more important.

    Importance: MEDIUM

    Good value: <150 g

    Stax Sr 009S is heavier than the average headphone (441 g vs 218 g). The average pair of headphones weighs 218 g.441 g vs 218 g
  • No voice assistant support
    Stax Sr 009S does not support voice assistants, the average headphone does. 60.8% of headphones support voice assistants.
    What it is: Compatible with voice assistants like Siri, Alexa, or Google Assistant
    When it matters: When hands-free control is part of your daily routine.

    Importance: LOW

    Stax Sr 009S does not support voice assistants, the average headphone does. 60.8% of headphones support voice assistants.
  • Fixed cable
    Stax Sr 009S has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
    What it is: Cable can be removed or replaced
    When it matters: When you care about easier cable replacement, simpler storage, or the option to swap to shorter, longer, or upgraded leads.

    Importance: MEDIUM

    Stax Sr 009S has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
  • Not headset-ready
    Stax Sr 009S is not headset-ready, while the average headphone is. 84.7% of headphones can be used as headsets.
    What it is: Shows whether the headphones can handle voice chat and calls in addition to normal audio playback.
    When it matters: When one pair needs to cover music, calls, meetings, and gaming chat.

    Importance: MEDIUM

    Stax Sr 009S is not headset-ready, while the average headphone is. 84.7% of headphones can be used as headsets.
  • 51.33x more expensive
    Stax Sr 009S is more expensive than the average headphone (£4,620 vs £90).
    Stax Sr 009S is more expensive than the average headphone (£4,620 vs £90).£4,620 vs £90
  • 2.36x worse value for money
    Stax Sr 009S has worse value for money than the average headphone (2.85 vs 6.736).
    What it is: An indicator that combines the headphones' overall rating with their cost.
    When it matters: When you are looking for headphones that offer a strong balance of performance, features, and price.
    Stax Sr 009S has worse value for money than the average headphone (2.85 vs 6.736).2.85 vs 6.74
  • 1 fewer microphones
    Stax Sr 009S has fewer microphones than the average headphone (0 vs 1). The average headphones have 1 microphones.
    What it is: Total number of built-in microphones
    When it matters: When call pickup quality and beamforming support matter to you.

    Importance: LOW

    Good value: >=2

    Stax Sr 009S has fewer microphones than the average headphone (0 vs 1). The average headphones have 1 microphones.0 vs 1
Total
Overall
Design
Sound
Calls & Controls
Features

Graphic comparison of Stax Sr 009S and

Attribute category
Attribute
No results found

Third-party reviews

What customers like about Stax Sr 009S?

  • World-class detail retrieval and resolution, often cited as being among the best in the world.
  • Exceptional transient response ('speed'), providing an effortless and clear sound across the spectrum.
  • Highly comfortable for long listening sessions with supple leather ear pads and effective weight distribution.
  • Improved bass resolution and a smoother treble compared to the original SR-009.
  • Expansive soundstage with precise, 'holographic' imaging and layering.
  • Superior build quality featuring machined aluminium and gold-plated stators.

What customers dislike about Stax Sr 009S?

  • High MSRP makes it a difficult value proposition compared to the SR-007MK2 or flagship SR-X9000.
  • Lacks the physical 'slam' or visceral bass impact found in top-tier planar magnetic or dynamic headphones.
  • Ruthlessly revealing of poor recordings and upstream equipment flaws.
  • Stock frequency response has some anomalies (like a 6kHz dip) that some users feel require EQ to perfect.
  • Cheap plastic headband arc feels out of place on a luxury flagship product.

Expert reviews

H
head-fi.org
28/04/2018
Stax SR-009S Electrostatic Headphones - Reviews Would you like to see a comparison of specifications between the SR-009S and the newer SR-X9000Go to p...

The Stax SR-009S electrostatic headphonesGo to product viewer dialog for this item. deliver exceptional technical performance characterized by extreme detail, remarkable speed, and a natural, wide soundstage. User comfort is a significant pro, featuring a design that distributes weight evenly to eliminate hot spots during extended listening sessions. However, the headphones exhibit...Read more

H
hifiplus.com
21/01/2020
Stax SR-009S electrostatic earspeakers

In this review, Chris Martens evaluates the Stax SR-009S electrostatic earspeakersGo to product viewer dialog for this item. ($4,325 / £3,895), emphasizing the headphone's internal upgrades over its legendary predecessor, the SR-009. The updated model integrates an ultra-thin super engineering plastic film diaphragm, a redesigned main body, and high-density, gold-plated MLER2...Read more

M
majorhifi.com
04/03/2020
Stax SR-009s Review - The Air Elemental

Stax SR-009s Review Summary The Stax SR-009s is an exceptional open-back electrostatic flagship headphone that delivers an incredibly fast, highly detailed, and airy presentation. It features gold-plated stators and premium leather earpads housed in a precisely machined aluminum earcup design that ensures supreme comfort and a visually striking aesthetic. Sound-wise, it provides an...Read more

W
whathifi.com
02/09/2020
Stax SR-009S / SRM-700S review

The Stax SR-009S earspeakers and SRM-700S solid-state driver unit deliver an exceptional, state-of-the-art electrostatic listening experience characterized by a flawless, crisp, and insightful sound quality with a completely silent background. The SR-009S headphones feature ultra-thin circular diaphragms, gold-plated stators for higher conductivity, and premium sheepskin earpads...Read more

A
audiokeyreviews.com
01/06/2021
THE STAX SR-009S - REVIEW - AUDIOKEY REVIEWS

The STAX SR-009S is an open-back electrostatic flagship headphone praised for delivering unrivaled transparency, whole-cloth top-to-bottom coherency, and blazing transient response speed. Priced at $4,545, it ditches the heavy magnets and moving coils of traditional dynamic and planar headphones in favor of a lightweight mylar film diaphragm sandwiched between gold-plated...Read more

A
audiophilestyle.com
29/12/2021
Review of Stax SR-009S: An Endgame in 2021?

The Audiophile Style review praises the Stax SR-009S as a premier "endgame" electrostatic headphone, highlighting its detailed, emotional midrange and exceptional comfort, even when paired with a high-end amplifier. While the treble is described as controlled and sparkly, the review notes a lack of visceral low-end weight compared to planar magnetic competitors. Structurally, the...Read more

F
futureaudiophile.com
31/07/2023
Stax SR-009S Electrostatic Earspeaker Review

The Stax SR-009S is a premium open-capsule electrostatic "earspeaker" priced at $4,545.00 that represents a rugged, state-of-the-art advancement over older legacy designs. Architecturally, it utilizes ultra-thin plastic diaphragms paired with gold-plated MLER2 electrodes, which significantly lower impedance and physical resonance while maximizing air permeability. The structural...Read more

A
audiosciencereview.com
24/08/2023
Stax SR-009SGo to product viewer dialogue for this item. Electrostatic Headphone Review

The Stax SR-009S is a high-end push-pull open-back electrostatic headphone priced at $4,545, featuring a premium build of leather and metal. In terms of performance, its primary advantage is an unprecedentedly low, virtually distortion-free harmonic profile, even at high sound pressure levels up to 104 dBSPL. When adjusted with parametric equalization (EQ), the headphone delivers an...Read more

A
audiotra.de
01/11/2019
Until now, Stax's cult electrostatics were something for...

The AUDIO review highly praises the Stax SR-009S flagship electrostatic headphones paired with the SRM-D10 portable amplifier/DAC, awarding the bundle a top-tier 100-point sound rating and a "Highendig" price-to-performance verdict. Testing via USB on a MacBook Pro and analog on a Google Pixel XL, the reviewer highlighted an exceptionally balanced, fresh, and lightning-fast acoustic...Read more

(Translated)Show original
S
son-video.com
20/06/2018
Stax SR-009S Hi-Fi Headphones - Son-Vidéo.com

The Stax SR-009S is an open-back electrostatic headphone from the legendary Japanese manufacturer Stax that retails for 5,395 €. It utilizes an evolved multilayer fixed electrode design (MLER2) with smooth post-etched edges and gold plating to minimize air resistance and diaphragm vibrations. The product features a lightweight, resonance-free machined aluminum body paired with...Read more

(Translated)Show original
O
on-mag.fr
18/04/2021
Stax SR-009S and SRM-700T Review: The Old Guard of Electrostatic Headphones Still at the Top of Their Game

The Stax SR-009S is an open-back electrostatic headphone that delivers an exceptionally detailed, pure, and balanced acoustic performance, making it a masterclass for classical, jazz, and instrumental music. Its lightweight structure (450g) and premium lambskin ear pads provide a divine, comfortable fit suitable for hours of continuous listening. However, the headphone relies on an...Read more

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M
misauriculares.com
16/01/2023
Comparison: Stax SR-009S and SR-007 mk2 - misauriculares.com", "Review: Stax SR-009S vs SR-007 mk2 - misauriculares.com

Stax SR-009S vs. SR-007 mk2 Comparison Review The Stax SR-009S is an open-back electrostatic headphone that excels in technical performance, offering a massive soundstage, highly precise imaging, and exceptional detail retrieval. Its high-end machined aluminum cups allow for multi-axis rotation and accurate height adjustments, ensuring a perfect seal that maximizes sub-bass response...Read more

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M
misauriculares.com
14/01/2023
Review: Stax SR-009S - misauriculares.com

Stax SR-009S Review Summary The Stax SR-009S is an open-back electrostatic headphone that delivers incredible technical performance but struggles with a highly fatiguing, bright tonal balance. On the positive side, the headphones offer an exceptional soundstage with realistic, natural horizontal and depth positioning. Their speed, micro- and macro-dynamics, and transient...Read more

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