Stax
STAX SRS-3100 Electrostatic Earspeaker System
Best electrostatic system for audiophiles seeking pure, high-fidelity sound reproduction.
Experience unparalleled audio fidelity with the STAX SRS-3100 Electrostatic Earspeaker System, featuring the SR-L300 Earspeaker and SRM-252S Driver Unit. This open-back, over-ear electrostatic system delivers a rich, deep bass response, delicate high frequencies, and a soothing mid-range, all balanced for an immersive listening experience. The SR-L300 boasts a newly designed enclosure, a hand-selected thin-film diaphragm, and tough stainless electrodes for exceptional sound. Its stepless slider headband ensures comfort, complemented by new high-quality synthetic leather earpads. The SRM-252S driver unit provides clear amplification, utilizing Class-A amplification with no coupling capacitors for nuanced reproduction.
$1140.00
Owner Satisfaction
4.7
/ 5
Category Rank
74
/ 5531
#74 in Headphones
Price vs Category Average
+94%
Above average
Who it's for
- Audiophiles seeking unmatched transparency and nuanced musical detail
- Listeners wanting a perfectly matched, plug-and-play high-fidelity system
- Budget-conscious enthusiasts entering the world of electrostatic sound
Who should skip it
- Users requiring compatibility with standard amplifiers or portable gear
- Commuters or residents in noisy environments needing sound isolation
- Newcomers hesitant to invest heavily in entry-level audio equipment
Performance breakdown
Transient Response
Electrostatic thin-film diaphragm delivers lightning-fast speed and unmatched micro-detail.
Soundstage Depth
Open-back design creates an expansive, holographic sense of space and positioning.
Amplification Purity
Class-A driver unit ensures a transparent, distortion-free signal path.
Comfort Ergonomics
Stepless slider headband allows for precise, personalized fit during long sessions.
Frequency Extension
Remarkable 7Hz to 41kHz range captures every nuance of the recording.
Build Materials
Functional industrial design prioritizes acoustic performance over premium luxury aesthetics.
Key Specs
Push-Pull electrostatic oval sound element
Frequency Response
7 - 41,000Hz
Capacitance
110pF
Sensitivity
101dB
Bias Voltage
580V DC
Earpads
Synthetic leather
Amplification
58dB
Input Impedance
50kΩ
Features
- Advanced Lambda series enclosure for improved acoustics
- Hand-selected thin-film diaphragm and stainless electrodes for balanced sound
- Stepless slider headband assembly for adjustable comfort
- Low-capacitance OFC wide cable for optimal signal transmission
- High-quality synthetic leather earpads for extended listening sessions
- Exclusive driver unit for STAX earspeakers with PRO-bias 5-pin connections
- Class-A amplification with no coupling capacitors for nuanced audio reproduction
- Parallel output terminal allows simultaneous connection of loudspeakers
What customers say
Customers consistently praise the STAX SRS 3100 system for its unparalleled sound quality, describing an incredibly detailed and transparent audio experience. Many consider it an exceptional entry point into high end electrostatic listening, offering a level of clarity and natural reproduction that rivals much more expensive setups. While a significant investment, users frequently highlight its remarkable value for money, asserting that the sonic performance far exceeds its price point within the audiophile market. This system delivers an immersive and highly resolving listening journey.
Know before you buy
Unlike traditional drivers that use magnets and voice coils, electrostatic earspeakers use a thin-film diaphragm suspended between two electrodes. This design allows for significantly faster response times and lower distortion, resulting in a much more transparent and detailed sound profile.
No, the SR-L300 requires a dedicated STAX-compatible driver unit, such as the included SRM-252S, to provide the necessary 580V DC bias voltage. Standard headphone amplifiers lack the high-voltage output required to power electrostatic transducers.
Yes, the SRM-252S is specifically engineered to complement the SR-L300. It utilizes a Class-A amplification circuit without coupling capacitors to ensure the signal remains pure and nuanced, making it an excellent match for high-resolution audio sources.
The system is designed for extended use, featuring a stepless slider headband for a precise fit and high-quality synthetic leather earpads. While the open-back design prevents heat buildup, the weight is distributed evenly to minimize pressure during long sessions.
The parallel output terminal on the SRM-252S is designed to pass the input signal through to another device, such as a separate power amplifier or active speakers. It does not output the amplified electrostatic signal to traditional passive loudspeakers.
You can expect a highly balanced and immersive soundstage. It offers deep, controlled bass, a smooth and natural mid-range, and delicate high-frequency reproduction that captures subtle details often missed by standard headphones.
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$1140