Over-Ear
STAX SR-007S
83Outstanding
$2,390
Full review dataSTAX SR-007S vs STAX SR-009D: which should you buy?
On aggregated review scores the STAX SR-007S comes out ahead with a HearWiki score of 83. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: STAX SR-007S - Outstanding overall at around $2390.
Over-Ear
STAX SR-009D
81Outstanding
$2,600
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Neither pulls ahead overall - they trade wins across the measures.
- STAX SR-007S
- STAX SR-009D
HearWiki score
83
81
Sound
9.5
9.7
Value
7.2
7.4
Price (USD)
$2,390
$2,600
Generation & platform
The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?
Same generation
STAX SR-007S (2025) against STAX SR-009D (2024). These are the same generation of hardware - nothing in the radio, the codecs or the noise cancelling separates them. Nothing separates them on convenience features either, so the choice comes down to tuning and price.
- SR-007S20251 yr newer
- SR-009D2024
Specifications
SR-007SSR-009D
- Type
- Over-Ear
- Over-Ear
- Price (USD)
- $2,390
- $2,600
- HearWiki score
- 83
- 81
- Released
- 2025
- 2024
- Availability
- Sold new
- Discontinued
- Driver
- 2× electrostatic
- 2× electrostatic
- Driver type
- electrostatic
- electrostatic
- Drivers per side
- 2
- 2
- Frequency response
- 6 Hz - 41 kHz
- 5 Hz - 42 kHz
- Impedance
- 145000 Ω
- 145000 Ω
- Sensitivity
- 101 dB/mW
- -
- Active noise cancelling
- No
- No
- ANC type
- none
- none
- Transparency mode
- No
- No
- Companion app
- No
- No
- Custom EQ
- No
- No
- Wear detection
- No
- No
- Controls
- none
- -
- Weight
- 430 g
- 452 g
- Detachable cable
- Yes
- Yes
- USB-C
- No
- No
- Pad material
- -
- leather
What reviewers said
STAX SR-007S
The STAX SR-007S is a refined electrostatic flagship that builds on the classic Stax formula with updated internals and comfort-focused earpads. It delivers a spacious, highly detailed soundstage with warm bass and clear treble, all while maintaining a smooth, airy presentation. This wired, over-ear design is a perfectionist's choice for those seeking an evolutionary upgrade in high-end audio.
- Pro:Spacious and precise soundstage
- Pro:Warm, deep bass with clear highs
- Pro:Improved comfort and reduced earcup resonance
- Con:Requires a dedicated electrostatic amplifier
- Con:Very high impedance limits portability
- Con:No built-in controls or wireless features
STAX SR-009D
The STAX SR-009D is a premium open-back electrostatic headphone engineered for audiophiles seeking exceptional clarity and detail. With its ultra-wide frequency response and refined driver design, it delivers a transparent, highly resolving soundstage, though it demands a dedicated amplifier and a substantial investment. Its leather pads and detachable cable add to a luxurious, high-end experience.
- Pro:Exceptional transparency and resolution
- Pro:Wide frequency response for detailed highs and lows
- Pro:Premium build with leather earpads
- Con:Very expensive
- Con:Requires specialized electrostatic amplifier
- Con:No noise cancellation or wireless features
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
Compare something else
Swap either side out, or start again from the picker.