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Stax - International SR-007A Electrostatic Earspeaker
The SR-007A Electrostatic Earspeaker
The SR-007A is a part of STAX's collection of electrostatic devices. This earspeaker offers high-quality sound with its unique electrode structure. The thickly insulated resin housing ensures that there is no distortion and you can only hear the delicate details in your music.
The Pure Crystal Ohno Continuous Casting cable makes sure that your music retains its freshness. Last but not the least, the headset is also extremely comfortable with its adjustable lamb leather earpads.
An Earspeaker Like No Other
The innovative SR-007A is, like all other STAX headphones, an ultra-high fidelity device due to its electrostatic technology. However, unlike other STAX Earspeakers, it features a different design for its deep powerful sound and is hence, an Earspeaker like no other.
Rich Powerful Sound
The unique electrode structure has a gold-plated outer edge. Unlike other Earspeakers, these electrodes do not have any holes, causing the diaphragm to vibrate more. This not only gives you a rich powerful sound but also lets you experience the delicate details in your music.
Rigid Metal Housing
To thoroughly eliminate distortion, STAX encases the sound element in a thick insulated resin case. This case is firmly attached to the SR-007A's body. This makes sure that only the diaphragm vibrates, giving you a sound that's almost magical.
Extreme Comfort
The SR-007A is made for long listening sessions. The soft lambskin earpads are adjustable so that they fit your head perfectly.
High-Quality Audio
For a great sound, the SR-007A uses a Pure Crystal Ohno Continuous Casting (PC-OCC) cable. This 2.5m (8.2 feet) cable has a low capacity and wide format which ensures that you only get high-quality audio when you plug it in.
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Professional Reviews 93/100
Deliciously Crispy
Sound Quality
95/100
Comfort Fit
96/100
Build Quality
89/100
Features Usability
78/100
Value for Money
90/100
The SR-007A blends electrostatic transparency with surprising tonal weight: expect taut, textured bass, vivid vocal nuance and a vast, air-filled soundstage. AUDIOKEY REVIEWS celebrates its warmth, speed and palpable imaging, while HomeTheaterHifi highlights its effortless, low-distortion musical flow. Lightweight lambskin comfort completes a deeply immersive reference-class listen.
What Reviewers Are Saying
Pros
Exceptional transparency, microdetail and fast transient response create an open, natural presentation.
Bass is unusually deep, taut and well resolved for an electrostatic design, with convincing weight and punch.
Large lambskin pads, low weight and rotating earcups support excellent long-session comfort.
&
Cons
Requires a dedicated compatible electrostatic energizer rather than a conventional headphone amplifier.
Its revealing presentation can expose shortcomings in poor recordings.
SOUND QUALITY PERFORMANCE 95/100
Reviewers describe an unusually transparent yet musically warm presentation, with very low apparent distortion, exceptional clarity and an effortless sense of scale. Its strengths extend from taut, textured bass to spacious imaging and electrostatic speed, while the available feedback contains no significant sonic criticism.
Bass
96/100
Bass is repeatedly praised as strong, tight, textured and tonally rich rather than merely abundant. Reviewers found convincing rumble, forceful but well-resolved timpani, clear low organ notes, and enough weight and punch to underpin acoustic bass lines.
Midrange
94/100
The SR-007A is described as bringing a more palpable, textured midrange than the SR-L700MkII, with a welcome sweetness alongside its transparency. Vocal reproduction is especially admired: voices are called soulful, clean, nuanced, spellbinding and addictive.
Treble
93/100
The available treble-specific feedback praises violin tones as effortless, crystalline, beautifully extended and well resolved. This appears to be an airy, refined top end rather than one that chases detail through glare, though direct treble commentary is limited to one review.
Resolution Detail
96/100
Clarity and transparency are recurring highlights. Reviewers report that guitar tone, sustain and overdrive emerge cleanly without muddiness, while vocal breaths and fine microdynamic information are rendered with exceptional openness and air.
Soundstage Imaging
96/100
Reviews consistently describe a broad, deep and highly dimensional stage with convincing layers and clearly placed performers. Sounds can seem to float outside the earcups, and recordings are said to convey a palpable, in-the-room presence.
Dynamics
94/100
The SR-007A is praised for electrostatic transient speed and an effortless ability to play loudly without strain. Reviewers also note convincing bass force and weightless musical energy, suggesting both quick attacks and a lively overall presentation.
Assessments of Build Quality, Usability, and Overall Propositions.
Comfort Fit
96/100
Comfort receives emphatic praise across the supplied reviews. The large lambskin pads, padded elastic headband and tension-arm arrangement are said to make fit and seal easy, while reviewers report being able to wear the headphones for hours without discomfort.
Build Quality
89/100
One reviewer calls the SR-007A beautifully constructed and thoughtfully designed, with a form-follows-function execution that conveys careful consideration. The supplied reviews offer little direct information about long-term durability, component replacement or connector robustness.
Features Usability
78/100
The SR-007A has a long, low-capacitance cable and a comfortable, straightforward fit system, but it is a dedicated electrostatic design that requires a compatible energizer rather than connecting directly to a conventional headphone output. Reviews do not discuss additional accessories, replaceable parts or other ownership conveniences in detail.
Value for Money
90/100
At its roughly $2,000-$2,200 listed price, the SR-007A is positioned as a premium specialist headphone, and one reviewer argues that surpassing it would likely require a significant extra outlay for only incremental improvement. That is strong praise for its competitiveness among high-end alternatives, although value discussion is limited.
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Authorized dealers for Stax - International SR-007A Electrostatic Earspeaker
- 3mA Audio — online and in-store — Houston, Texas, United States (website)
- Acoustica — online and in-store — Chester, England, United Kingdom (website)
- Ambiance Concert — in-store — Angers, Pays de la Loire, France (website)
- Analogue Seduction — online and in-store — Whittlesey, England, United Kingdom (website)
- Arctic Audio — in-store — Fargo, North Dakota, United States (website)
- ATR - Audio Trade — in-store — Eltville am Rhein, Hessen, Germany (website)
- AUDIO 2000 — in-store — Wuppertal, Nordrhein-Westfalen, Germany (website)
- Audio 46 — online and in-store — New York, New York, United States (website)
- Audio Evolution — online and in-store — Volla, Campania, Italy (website)
- AUDIO EXCLUSIVE — in-store — Wels, Oberösterreich, Austria (website)
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