STAX SR-303
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At a glance
- Brand
- STAX
- Type
- Over-Ear
- Fit
- -
- Connection
- Wired
- Noise cancelling
- No
- Released
- 1999
The SR-303 is an electrostatic earspeaker that uses a thin diaphragm with a DC voltage of 580V to generate sound, offering a frequency response of 7Hz to 41kHz and a maximum output of 118dB.
The HearWiki takeAI-condensed
The STAX SR-303 is an electrostatic over-ear headphone that relies on a highly charged thin diaphragm to produce sound, delivering an exceptionally wide frequency range from 7 Hz to 41 kHz. It’s a wired-only model with no noise cancellation, aimed at audiophiles who value transparency and detail over portability or isolation. With a high impedance of 132,000 ohms, it requires a dedicated electrostatic amplifier to perform at its best.
What works
- Very wide frequency response (7 Hz–41 kHz) for detailed highs and deep lows
- Electrostatic driver offers low distortion and fast transient response
- Lightweight design at 295 g for comfortable long listening sessions
- Leather earpads provide a classic, premium feel
What doesn't
- Requires a special electrostatic amplifier, not compatible with standard headphone jacks
- No active noise cancellation limits use in noisy environments
- Wired connection only, so no wireless or USB-C options
Paraphrased from published reviews & specs - not an original hands-on test. Our AI disclosure.
Specifications
| Driver | electrostatic |
|---|---|
| Driver type | electrostatic |
| Drivers per side | 1 |
| Frequency response | 7 Hz - 41 kHz |
| Impedance | 132000 Ω |
| Sensitivity | 100 dB/mW |
Audio
| Driver | electrostatic |
|---|---|
| Driver type | electrostatic |
| Drivers per side | 1 |
| Frequency response | 7 Hz - 41 kHz |
| Impedance | 132000 Ω |
| Sensitivity | 100 dB/mW |
Features
| Active noise cancelling | No |
|---|
Design
| Weight | 295 g |
|---|---|
| USB-C | No |
| Pad material | leather |
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