Stax Sr 507 Review | 93 Data compared

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  • Avg. price in UK: ~£840
  • Avg. price in US: ~$1,100
  • Form factor: over-ear
  • Connectivity: wired
  • Battery life: N/A hours
  • Active noise cancellation (ANC): no

Stax Sr 507 review. Compare 93 technical specifications and user reviews to see how it ranks among headphones and if it is worth buying.

4.0

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%

3.2

Technical Score

20.0%

7.3

User score

Poor
3.2

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%

3.2

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
7.3

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%

10

User reviews

30.0%

1.0

Popularity

User score:
United Kingdom
amazon
5.0
(1)

(Reviews last updated: June 2026)

Very good
  • 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

  • 1.5
    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

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Best rankings

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

Verdict

The Stax SR-507 is an open-back, push-pull electrostatic earspeaker featuring a ultra-thin 1.35 µm diaphragm and a glass-fibre reinforced resin (GRP) shell for enhanced structural rigidity. It operates at a 580V DC bias voltage with a broad frequency response of 7Hz to 41kHz, a nominal impedance of 145kOhms, and a sensitivity of 100dB/100V rms. Its primary characteristics include exceptional transparency, lightning-fast transient response, and a highly detailed, analytical sound profile. Key pros are its genuine lambskin earpads, increased bass extension compared to previous Lambda models, and incredible sense of openness and imaging. However, some users report cons such as a notably bright or 'tizzy' treble peak around 8–10kHz, a somewhat small and forward soundstage, and a non-detachable cable that can feel heavy and cumbersome during use.

Technical Specifications of Stax Sr 507

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%

3.2

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

3.2
Stax Sr 507 has a technical score of 3.16 points, which is lower than that of 97.9% 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%

10

User reviews

30.0%

1.0

Popularity

User score:
United Kingdom
amazon
5.0
(1)

(Reviews last updated: June 2026)

7.3
Stax Sr 507 has a user score of 7.3 points, which is lower than that of 73.5% of products in this category.
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 507 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%

4.0

Overall score

40.0%

6.1

Price

4.6
Stax Sr 507 has a quality-to-price ratio of 4.6 points, which is lower than 96.8% 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 507 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

?
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 507 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

7 Hz
Stax Sr 507 reaches a lowest frequency of 7 Hz, lower lowest frequency than 83.2% of headphones and equal to 1.3% of headphones.
Show more
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 507 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 507 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 507 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 507 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 507 does not support voice assistants. 60.9% of headphones support voice assistants.
Show more
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

388 g
Stax Sr 507 weighs 388 g, heavier than 94.7% 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 507 vs the average headphone

  • 11 Hz lower bass extension
    Stax Sr 507 has a lower lowest frequency than the average headphone (7 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 507 has a lower lowest frequency than the average headphone (7 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.7 Hz vs 18 Hz
  • 21,000 Hz higher treble extension
    Stax Sr 507 has a higher highest frequency than the average headphone (41,000 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 507 has a higher highest frequency than the average headphone (41,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.41000 Hz vs 20000 Hz
  • 0.29 % lower distortion
    Stax Sr 507 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 507 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 507 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 507 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 507 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 507 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
  • Open-back design
    Stax Sr 507 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 507 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.
  • 11 Hz lower bass extension
    Stax Sr 507 has a lower lowest frequency than the average headphone (7 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
  • 21,000 Hz higher treble extension
    Stax Sr 507 has a higher highest frequency than the average headphone (41,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
  • 0.29 % lower distortion
    Stax Sr 507 has a lower total harmonic distortion than the average headphone (0 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
  • 78% higher weight
    Stax Sr 507 is heavier than the average headphone (388 g vs 218 g). The average pair of headphones weighs 218 g.
  • Fixed cable
    Stax Sr 507 has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
  • No travel bag
    Stax Sr 507 does not include a travel bag, the average headphone does. 65.2% of headphones include a travel bag.
  • No passive noise reduction
    Stax Sr 507 does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
  • No neodymium magnet
    Stax Sr 507 does not use neodymium magnets, the average headphone does. 77.4% of headphones use neodymium magnets.
  • Not headset-ready
    Stax Sr 507 is not headset-ready, while the average headphone is. 84.7% of headphones can be used as headsets.
  • 1 fewer microphones
    Stax Sr 507 has fewer microphones than the average headphone (0 vs 1). The average headphones have 1 microphones.
  • No voice assistant support
    Stax Sr 507 does not support voice assistants, the average headphone does. 60.8% of headphones support voice assistants.
  • 7 years older release date
    Stax Sr 507 was released earlier than the average headphone (2,010 vs 2,017). The average headphones were released in 2,017.
    October 2010
  • No passive noise reduction
    Stax Sr 507 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 507 does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
  • 78% higher weight
    Stax Sr 507 is heavier than the average headphone (388 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 507 is heavier than the average headphone (388 g vs 218 g). The average pair of headphones weighs 218 g.388 g vs 218 g
  • No voice assistant support
    Stax Sr 507 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 507 does not support voice assistants, the average headphone does. 60.8% of headphones support voice assistants.
  • Fixed cable
    Stax Sr 507 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 507 has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
  • Not headset-ready
    Stax Sr 507 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 507 is not headset-ready, while the average headphone is. 84.7% of headphones can be used as headsets.
  • 9.33x more expensive
    Stax Sr 507 is more expensive than the average headphone (£840 vs £90).
    Stax Sr 507 is more expensive than the average headphone (£840 vs £90).£840 vs £90
  • 45.9% worse value for money
    Stax Sr 507 has worse value for money than the average headphone (4.62 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 507 has worse value for money than the average headphone (4.62 vs 6.736).4.62 vs 6.74
  • 1 fewer microphones
    Stax Sr 507 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 507 has fewer microphones than the average headphone (0 vs 1). The average headphones have 1 microphones.0 vs 1

Graphic comparison of Stax Sr 507 and

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Third-party reviews

United Kingdom

(Reviews last updated: June 2026)

What customers like about Stax Sr 507?

  • Extreme clarity and transparency, often described as 'rendering sounds out of thin air'
  • Incredible transient response and speed, especially with percussive instruments like piano
  • Well-extended and defined bass for an electrostatic headphone, lacking the 'boom' found in earlier Lambda models
  • Improved build quality over predecessors, featuring a more robust GRP shell and metal yokes
  • Use of real leather for ear pads which are ergonomically shaped and comfortable for many
  • Open and airy sound presentation that eliminates 'claustrophobic' effects typical of many headphones

What customers dislike about Stax Sr 507?

  • Bright and aggressive treble peak (around 8–10kHz) that can be fatiguing or 'shouty'
  • Forward and intimate soundstage that some users find too small or 'flat' compared to other top-tier models
  • A 'cold' or thin tonal character due to a slight dip in the lower midrange
  • High clamping force or awkward pressure points on the head-band for some users
  • Extremely revealing of poor recordings and requires high-quality, often expensive, dedicated amplification to perform optimally

Expert reviews

S
soundstagexperience.com
01/11/2011

The SoundStage! Xperience review by S. Andrea Sundaram highlights the Stax SR-507 Lambda Signature Earspeaker Headphones ($1,099 USD) as an exceptional mid-priced electrostatic system that delivers class-leading detail, transparency, and transient speed, running circles around top dynamic competitors. Tested alongside the WooAudio GES Headphone Amplifier ($1,450 USD), a warm...Read more

H
headphoneer.com
11/06/2023

The The Headphoneer's review of the Stax SR-507Go to product viewer dialog for this item. highlights this out-of-production electrostatic model as one of the best "Lambda" series headphones ever made, acting like a smaller, more affordable version of the high-end SR-009. In terms of pros, the reviewer heavily praises its exceptionally fast, punchy, and solid bass performance,...Read more

H
hifiplus.com
20/09/2015

In his review for hi-fi+, Alan Sircom highly praises the Stax SR-507 II earspeakers combined with the SRM-006tS 'Kimik' energiser, calling it the best overall balance of performance and price in the high-end headphone market. Descended from the classic 1979 Lambda design, the SR-507 II boasts modern upgrades like a robust glass-fiber reinforced plastic (GRP) shell and a ultra-thin,...Read more

M
musicservertips.com
27/10/2015

The reviewer presents STAX electrostatic headphones as an elite alternative to traditional loudspeakers and standard headphones, particularly praised for their ability to bypass room acoustic interferences entirely. Leveraging an incredibly lightweight Mylar foil driver sandwiched between two high-voltage stators, these headphones offer unmatched clarity, perfect transient...Read more

H
head-fi.org
27/11/2010

The Stax SR-507 electrostatic earspeakers are praised for exceptional sound clarity and a lightweight, durable design, according to a user review on Head-Fi. However, the reviewer found the overall experience limited by a narrow soundstage, discomfort due to ear pad design, and poor value due to high costs, especially when factoring in the required, separate adapter.

S
soundstagehifi.com
01/05/2012

The Stax SR-507 Lambda Signature electrostatic headphones excel in delivering an open soundstage with detailed transparency and rapid, accurate transient responses. Reviewer S. Andrea Sundaram noted that their incredible openness allows vocals and instruments to decay naturally, closely mirroring a live performance or top-tier loudspeakers. They are highly versatile, capably...Read more

H
hifitest.de
17/02/2015

The Stax Lambda SR-507 and SRM-006tS headphone system delivers reference-class audio performance by pairing an open-back electrostatic headset with a specialized vacuum tube amplifier. A major strength of this combination is its breathtaking resolution, high-speed dynamics, and neutral sound signature, which offers a wide, airy soundstage driven by the vibrant intensity of the tube...Read more

R
remusic.it
10/02/2016

The ReMusic review highlights the combination of the Stax SR-507 electrostatic headphones and the SRM-727II Class A solid-state amplifier as a highly successful, top-tier audio system. A key pro of this setup is its absolute level of detail retrieval, expansive virtual soundstage, and a highly neutral yet non-aseptic sound signature that reveals every nuance and flaw in a recording....Read more

H
headphoneer.com
11/06/2023

In his review for The Headphoneer, Erlend B. evaluates the STAX SR-507Go to product viewer dialog for this item. electrostatic earspeaker, hailing it as "one of the best lambdas ever made." On the audio side, the pros include an incredibly fast, dynamic, and organic sound signature with excellent analytical capabilities and precise imaging. The reviewer notes that it delivers a...Read more

Video reviews

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