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Scored using Headphones Methodology v1.0
Headphones Methodology v1.0
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Products in this category are scored under Frontum Headphones Methodology v1.0: technical specifications plus authentic consumer ratings, with 0% commercial bias.
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Stax Sr 307 Review | 93 Data compared

Avg. price:~£480Form factor:over-earConnectivity:wiredBattery life:N/A hoursActive noise cancellation (ANC):no

Stax Sr 307 Review: Compare 93 technical specifications and user reviews to see how this product ranks in the Headphones category and whether it is worth buying.

Stax Sr 307
5.0/10

Overall score

Score
5.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 97% of models
Score components

80%

5.0

Technical score

20%

?

User score

â–¼Worse than 97% of headphones
5.9

Value for money

Value for money
5.9/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 96% of models
Score components

70%

5.0

Overall score

30%

8.0

Price

â–¼Worse than 96%
5.0

Technical score

Technical score
5.0/ 10
✕
What it is
An assessment of technical performance for products in the Headphones category across these key areas: Sound, Calls & Controls, Connectivity, Features, Battery, Design.
When it matters
When you want to compare headphones based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 92% of models
Score components

52%

5.4

Sound

20%

5.0

Features

10%

4.9

Design

8%

4.0

Connectivity

6%

4.0

Battery

4%

4.9

Calls & Controls

â–¼Worse than 92%
?

User score

User score
8.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 58% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

  • stax-sr-307
stax-sr-307
Where to buy
    N/A~ £480
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of pair of headphones Stax Sr 307

Technical score
Technical score
5.0/ 10
✕
What it is
An assessment of technical performance for products in the Headphones category across these key areas: Sound, Calls & Controls, Connectivity, Features, Battery, Design.
When it matters
When you want to compare headphones based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 92% of models
Score components:

52%

5.4

Sound

20%

5.0

Features

10%

4.9

Design

8%

4.0

Connectivity

6%

4.0

Battery

4%

4.9

Calls & Controls

5.0
User score
User score
8.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 58% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

?
Popularity
Popularity
1.0/ 10
✕
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.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Popularity:
Stax Sr 307 has a popularity score of 1 point, which is lower than that of 73.4% of products in this category.
1.0
Value for money
Value for money
5.9/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 96% of models
Score components:

70%

5.0

Overall score

30%

8.0

Price

5.9
Active noise cancellation (ANC)
no
This pair of headphones does not support active noise cancellation. 27.5% of headphones support active noise cancellation.
Driver type
electrostatic
Driver size
90 mm
Market range: <10 mm – >50 mm
This pair of headphones uses a driver size of 90 mm, larger driver size than 98.3% of headphones and equal to 0.3% of headphones.
Number of drivers
1
Market range: <1 – >4
This pair of headphones uses 1 drivers, fewer drivers than 4% of headphones and equal to 96% of headphones.
Lowest frequency
7 Hz
Market range: <5 Hz – >20 Hz
This pair of headphones 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
no
This pair of headphones does not support a noise-canceling microphone. 39% of headphones support noise-canceling microphones.
Can be used as a headset
yes
This pair of headphones is headset-ready, 84.8% is not. 15.2% of headphones can be used as headsets.
Number of microphones
0
Market range: <0 – >4
This pair of headphones has 0 microphones, fewer microphones than 73.2% of headphones and equal to 26.9% of headphones.
Boom microphone
no
This pair of headphones does not include a boom microphone. 13.5% of headphones have a boom microphone.
Microphone SNR
N/A
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Connectivity
wired
This pair of headphones supports wired connectivity, less flexible connectivity than 49.2% of headphones and equal to 50.8% of headphones.
Bluetooth version
N/A
Maximum Bluetooth range
N/A
Audio latency
N/A
Multipoint support
no
This pair of headphones does not support multipoint. 30.6% of headphones support multipoint.
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Ambient sound mode
yes
This pair of headphones supports ambient sound mode. 75.2% of headphones support ambient sound mode.
EQ support
no
This pair of headphones does not support EQ customization. 23.2% of headphones support EQ.
Companion app
no
This pair of headphones does not work with a companion app. 21.6% of headphones support companion apps.
Adjustable ANC levels
N/A
Voice assistant support
no
This pair of headphones does not support voice assistants. 60.9% of headphones support voice assistants.
Show more
Battery life
N/A
Battery life with ANC
N/A
Charging time
N/A
Quick charge
no
This pair of headphones does not support quick charging. 33.1% of headphones support quick charge.
Battery capacity
N/A
Show more
Brand name
Stax
Form factor
over-ear
Weight
340 g
Market range: <14 g – >340 g
This pair of headphones weighs 340 g, heavier than 89.6% of headphones and equal to 1% of headphones.
Acoustic design
open-back
Clamp force
5
Market range: <2.5 – >6.1
This pair of headphones has a clamp force of 5, higher clamp force than 68.4% of headphones and equal to 2.1% of headphones.
Show more

Stax Sr 307 vs the average pair of headphones

246810TotalDesignSoundBatteryConnectivityCalls & ControlsFeatures
  • 50 mm larger driver size
    This pair of headphones uses a larger driver size than the average pair of headphones (90 mm vs 40 mm). The average headphones use a driver size of 40 mm.
    90 mm vs 40 mm
  • Ambient sound mode
    This pair of headphones supports ambient sound mode, the average pair of headphones does not. 24.9% of headphones support ambient sound mode.
  • 11 Hz lower bass extension
    This pair of headphones has a lower lowest frequency than the average pair of headphones (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
    This pair of headphones has a higher highest frequency than the average pair of headphones (41,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
    41,000 Hz vs 20,000 Hz
  • 0.29 % lower distortion
    This pair of headphones has a lower total harmonic distortion than the average pair of headphones (0 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    0.01 % vs 0.3 %
  • 1.3 m longer cable length
    This pair of headphones offers a more useful cable length than the average pair of headphones (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
    This pair of headphones uses an open-back design, while the average pair of headphones does not. 9.1% of headphones have an open-back design.
  • 1.3 m longer cable length
    This pair of headphones offers a more useful cable length than the average pair of headphones (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
    This pair of headphones uses an open-back design, while the average pair of headphones does not. 9.1% of headphones have an open-back design.
  • 50 mm larger driver size
    This pair of headphones uses a larger driver size than the average pair of headphones (90 mm vs 40 mm). The average headphones use a driver size of 40 mm.
    90 mm vs 40 mm
  • 11 Hz lower bass extension
    This pair of headphones has a lower lowest frequency than the average pair of headphones (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
    This pair of headphones has a higher highest frequency than the average pair of headphones (41,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
    41,000 Hz vs 20,000 Hz
  • 0.29 % lower distortion
    This pair of headphones has a lower total harmonic distortion than the average pair of headphones (0 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    0.01 % vs 0.3 %
  • Ambient sound mode
    This pair of headphones supports ambient sound mode, the average pair of headphones does not. 24.9% of headphones support ambient sound mode.
  • No passive noise reduction
    This pair of headphones does not offer passive noise reduction, while the average pair of headphones does. 82.6% of headphones have passive noise reduction.
  • 56% higher weight
    This pair of headphones is heavier than the average pair of headphones (340 g vs 218 g). The average pair of headphones weighs 218 g.
    340 g vs 218 g
  • No voice assistant support
    This pair of headphones does not support voice assistants, the average pair of headphones does. 60.8% of headphones support voice assistants.
  • Fixed cable
    This pair of headphones has a fixed cable, while the average pair of headphones has a detachable one. 62% of headphones have a detachable cable.
  • 10 mm tighter earcup height
    This pair of headphones has tighter earcup height than the average pair of headphones (50 mm vs 60 mm). The average headphones offer an inner earcup height of 60 mm.
    50 mm vs 60 mm
  • 5.33x more expensive
    Stax Sr 307 is more expensive than the average pair of headphones (£480 vs £90).
    £480 vs £90
  • 22.6% worse value for money
    Stax Sr 307 has worse value for money than the average pair of headphones (5.93 vs 7.3).
    5.93 vs 7.27
  • No battery indicator
    This pair of headphones does not show battery level clearly, while the average pair of headphones does. 56.3% of headphones have a battery level indicator.
  • 5.33x more expensive
    Stax Sr 307 is more expensive than the average pair of headphones (£480 vs £90).
    £480 vs £90
  • 22.6% worse value for money
    Stax Sr 307 has worse value for money than the average pair of headphones (5.93 vs 7.3).
    5.93 vs 7.27
  • 5.87x less popular
    Stax Sr 307 is less popular than the average pair of headphones (1 vs 5.9).
    1 vs 5.87
  • 56% higher weight
    This pair of headphones is heavier than the average pair of headphones (340 g vs 218 g). The average pair of headphones weighs 218 g.
    340 g vs 218 g
  • Fixed cable
    This pair of headphones has a fixed cable, while the average pair of headphones has a detachable one. 62% of headphones have a detachable cable.
  • 10 mm tighter earcup height
    This pair of headphones has tighter earcup height than the average pair of headphones (50 mm vs 60 mm). The average headphones offer an inner earcup height of 60 mm.
    50 mm vs 60 mm
  • Tangle-prone cable
    This pair of headphones uses a tangle-prone cable, while the average pair of headphones is easier to manage. 64.2% of headphones use a tangle-free cable.
  • No travel bag
    This pair of headphones does not include a travel bag, the average pair of headphones does. 65.4% of headphones include a travel bag.
  • 0.7 higher clamp force
    This pair of headphones has a higher clamp force than the average pair of headphones (5 vs 4.3). The average headphones have a clamp force of 4.3.
    5 vs 4.3
  • No passive noise reduction
    This pair of headphones does not offer passive noise reduction, while the average pair of headphones does. 82.6% of headphones have passive noise reduction.
  • No neodymium magnet
    This pair of headphones does not use neodymium magnets, the average pair of headphones does. 81.9% of headphones use neodymium magnets.
  • 1 dB/mW lower sensitivity
    This pair of headphones has a lower sensitivity than the average pair of headphones (101 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
    101 dB/mW vs 102 dB/mW
  • No battery indicator
    This pair of headphones does not show battery level clearly, while the average pair of headphones does. 56.3% of headphones have a battery level indicator.
  • 1 fewer microphones
    This pair of headphones has fewer microphones than the average pair of headphones (0 vs 1). The average headphones have 1 microphones.
    0 vs 1
  • No voice assistant support
    This pair of headphones does not support voice assistants, the average pair of headphones does. 60.8% of headphones support voice assistants.
  • 6 older release date
    This pair of headphones was released earlier than the average pair of headphones (2010 vs 2016). The average headphones were released in 2016.
    2010 vs 2016

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Not graded yet

Third-party reviews

What customers like about Stax Sr 307

  • Clean and transparent sound with excellent retrieval of vocal details
  • Tonal balance is reasonably neutral across the frequency spectrum
  • Fast transient response and decay characteristic of electrostatic drivers
  • High-quality bass extension that is deep and accurate, if not impactful
  • Smooth and refined signature that is forgiving for specific recordings
  • Lightweight design at 340g contributes to long-term listening comfort

What customers don't like about Stax Sr 307

  • Lack of visceral bass impact and physical punch compared to dynamic headphones
  • Limited soundstage depth, often described as having a '2D' or 'balcony' feel
  • Artificial timbre occasionally noted with specific instruments like pianos
  • Requires dedicated electrostatic amplification (Energizer), limiting portability
  • Sensitive diaphragm is prone to issues with dust and high humidity
  • Limited driver excursion prevents high SPL playback for heavy kick drums

Verdict

The Stax SR-307 is an open-back, push-pull electrostatic earspeaker featuring a frequency response of 7Hz to 41kHz and a sound pressure sensitivity of 101dB. It utilizes high-rigidity resin housing and a 1.35-micrometer thin diaphragm made from advanced engineering plastics, operating at a standard 580V DC bias. Key advantages include its exceptionally fast transient response, airy treble, and transparent midrange that provides a wide, immersive soundstage. However, it can suffer from a light mid-bass presence that lacks physical impact and may sound overly bright or fatiguing on certain recordings, while also requiring a dedicated high-voltage electrostatic amplifier for operation.

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