Immerse yourself in the pinnacle of audio reproduction with the Stax SR-009S Reference Electrostatic Earspeakers, a flagship offering from STAX, a brand celebrated for its electrostatic technology since the 1960s. Featuring a frequency response of 5 Hz to 42 kHz, these earspeakers deliver unparalleled transparency and detail, thanks to the advanced MLER2 gold-plated electrodes and an ultra-thin diaphragm.

Designed for audiophiles seeking the ultimate listening experience, they offer a natural soundstage and refined bass, making every track a revelation. Available at Len Wallis Audio, the Stax SR-009S Reference Electrostatic Earspeakers are crafted to elevate your music to new heights.

Why Choose the Stax SR-009S Reference Electrostatic Earspeakers?

The Stax SR-009S Reference Electrostatic Earspeakers are engineered for those who demand the best in audio fidelity, offering a listening experience that transcends traditional headphones. With a frequency response spanning 5 Hz to 42 kHz, they capture every nuance of your music, from the deepest bass to the airiest highs, with a natural soundstage that rivals the Hifiman Susvara in width, as noted in reviews.

The MLER2 gold-plated electrodes reduce resonance and impedance, delivering a sound that’s fast, clean, and exceptionally detailed, while the improved bass response provides a quick, round low-end that keeps up with complex passages—perfect for jazz, classical, or any genre.

Weighing 441 g without the cable (583 g with), these earspeakers feature a machined aluminum enclosure for rigidity and lightweight design, paired with genuine lamb leather ear pads for lasting comfort during extended listening sessions. The silver-coated 6N OFC cable ensures minimal signal loss, preserving the integrity of your audio.

The SR-009S requires a STAX electrostatic headphone amplifier for operation, but it’s relatively easy to drive compared to other models like the SR-007MK2, making it a versatile choice for high-end setups. Available at Len Wallis Audio, the Stax SR-009S Reference Electrostatic Earspeakers bring studio-quality sound to your home.

Sound is subjective, though—the true test is in your ears. Visit our Lane Cove showroom to audition the Stax SR-009S Reference Electrostatic Earspeakers and discover their magic for yourself.

Technical Specifications

• Type: Push-Pull Open Back Circular Electrostatic Headphone
• Frequency Response: 5 – 42,000 Hz
• Electrostatic Capacitance: 110 pF (including cable)
• Impedance: 145 kΩ (including cable, at 10 kHz)
• Sound Pressure Sensitivity: 101 dB / 100V r.m.s. 1 kHz
• Maximum Sound Pressure: 118 dB / 400 Hz
• Bias Voltage: 580V DC
• Left & Right Identification: “L” and “R” indicated on the arc assembly; left channel cable marked with a solid line, right with a dotted line
• Ear Pads: Genuine lamb leather (direct skin contact), high-quality synthetic leather (surrounding portion)
• Cable: Silver-coated 6N (99.9999%) OFC parallel 6-strand, low-capacity special wide cable, 2.5 m full length
• Weight: 441 g (without cable), 583 g (with cable)

Read the Review here.

Shop the Stax SR-009S Reference Electrostatic Earspeakers at Len Wallis Audio to enhance your audio experience. Explore more over-ear headphones here or visit our showroom in Lane Cove to experience their brilliance. Contact us today to secure this gem and enjoy high-fidelity sound at its finest!

Len Wallis Audio Excellence Promise

Since 1978, Len Wallis Audio has been a beacon of hi-fi excellence, curating top-tier audio and visual solutions. From our Lane Cove showroom in Sydney, we’ve spent over four decades selecting only the finest products for our collection.

We take pride in showcasing the best in audio-visual innovation, ensuring every piece reflects our commitment to quality. We’re not just a store—we’re your partners in crafting a home theatre system tailored to your needs.

With personalised service and a passion for exceptional experiences, we’re here to make your audio-visual dreams a reality.

Ready to elevate your audio experience?

Call (02) 9427 6755
Email Sales@lenwallisaudio.com.au
Or visit us at 64 Burns Bay Road, Lane Cove, NSW, 2066