With improved bass response and a tamed treble peak relative to the original SR-009, the SR-009S is STAX's latest effort to produce the world’s best headphone. With updated drivers, pads, and other housing pieces, the SR-009S is a step forward while still retaining much of the character of the original. We recommend our Blue Hawaii SE amplifier for the highest level of performance possible from these amazing headphones.
Ships in USA
30 Day Returns
Free 1 or 2 Day
Authorized Retailer
If the fixed electrode becomes infinitely thinner, the air resistance will be decreased and the permeability of sound waves will be improved. On the other hand, thinner electrodes are poor in rigidity and suffer from vibrations of their own and the sound becomes muddy.The SR-009S evolved further the electrode established in the SR009 as the integration of present technology.
The edges of electrode hole were smoothed through after-etching processing to reduce air resistance, and the permeability of sound has been much more improved. Moreover, gold plating processing with large specific gravity further decreased the electrode vibration. Finally, the sound clarity has been achieved by reducing the resistance of electrode itself.
It employed secures firmly the sound element, contributing to improve the clearness of sound. Furthermore, the case thickness has been reduced to the limit, making the flow of condensation-and-rarefaction air wave from the sound element more smooth.
Intensity has been increased by giving roundness to the “guard mesh” of sound element, which lowered the influence of reflection and improved the resolution of sound.
| Type | Open-Back |
|---|---|
| Fit | Over-Ear |
| Cable | 2.5m |
| Weight | 441g |
| Impedance | 145kohm |
| Efficiency | 101dB / 100Vrms |
Overall rating: 5.0 / 5 from 14 reviews.
Review topics: [].
"I really love these headphones. They may not have the slam of the Focal Utopia’s , they tend to sway with the music as opposed to punching through it. They have a wider sound stage than the Focal’s. I particularly enjoy jazz and classical orchestra music with these cans. As for the bass, it is well controlled and sufficient for my tastes."
"The SR-009s is non-fatiguing to listen to and to wear for an extended period. It has a very balanced sound. I experienced lots of detail that let me hear things that I never noticed before in Hi Res recordings. At the same time, they can create a wide stage with a sense of "ease" to the sound reproduction."
"Utterly amazing. Best sound I have ever heard by a long shot. Supremely comfortable, very high quality of workmanship. HeadAmp had a great sale price and shipping was next day. Fantastic product and great experience overall."
"Awesome sound amazing quality. HeadAmp delivery was fast too."
"I have these partnered with their older brother the SR-009 and find the SR-009S to be a worthy update, providing a very enjoyable and detailed musical presentation. Works well across musical genres in a correct system. Very pleased with the sound. Comfortable wear. Stunning detail and perhaps a little more approachable than the SR-009 for long listening sessions. The SR-009S have some magic in them, pleased with the purchase."
"My wife and I were making the transition to headphone listening from decades of floor-standing speaker listening. Choice of headphones was critical for our future listening enjoyment. As principally classical and acoustic music listeners, the Stax 009S coupled with the Blue Hawaii Special Edition amplifier just punched ALL of our audiophile buttons. We compared to the Stax 007 and my wife was a "thumbs up", but then she put on the 009S for audition and single thumbs up immediately turned into smiles, head-knods and vigorous double-thumbs-up. Let's just say that for our priorities of transparency, detail resolution, neutrality and accurate reproduction of the natural timbre of the instruments, the Stax 009S was an immediate hit with us and continues to thoroughly satisfy. We couldn't be happier with our choice of two Stax 009S headphones and the BHSE electrostatic amplifier to drive them."
"Royal Ballet on Qobuz -> Lumin P1 -> Mogami XLR -> Blu Hawaii Special Edition -> Stax 009 Sigma. Volume 2 the Max. Both Lumin and Blu Hawaii plugged into Plixir 100 with NBS. After 100 hours break in, the sound is lush and involving. You just have to keep listening. Then you look up and Oh! It's dawn. The Plixir takes the edge off the electrostatic sound. Stax is renowned in the upper frequencies, but what is surprising is the bass punch e.g. ZZ Top's Gimme All Your Lovin' or Sharp Dressed Man. Billy "The Sage of Houston" would love it. King Crimson's In. The. Wake. Of. Poseidon starts with solo voice then comes a crashing magnificent woodwinds. You really get the growl of the giant reeds. On Weather Report's Boogie Woogie Waltz, Zawinul's synth will explode into your head. And they say the Stax 9000 is better. I may never go to sleep again."
"I just received my Stax SR-009S headphones and am elated with the sound quality. I started with 'NO' equalization and have not altered from that configuration. This is the first headphone I have ever used that didn't require some sort of equalization. I am using a very old Stax SRM-1/MKII that I purchased new eons ago and it drives the 009S with ease. An absolutely fabulous purchase. I hounded Justin with numerous phone calls and lots of boring questions but he didn't mind. A very happy experience. Next is the amplifier purchase....."
"SR-009S Phones Top of List for Electrostatic!!!!! Wonderful..... I have owned Stax 07(still own) Hifiman Shangri-La Jr OverEar Electrostatic $4000 and Stax SR- 009S The World of Electrostatic Headphones: I have had the pleasure to have owed Abyss and other headphones but with the right equipment for Electrostatic Headphones, and the money, the SR-009s leave you feeling you don't have search for something better. Very efficient(use less gain to get same db output),more than the Stax 007 and HIfiman Shangri-La, very comfortable for long listening... The resonance,bass,mids,highs are all great!!!! Super Clean, that's why I like Electrostatic over regular headphones. I would much prefer a Electrostatic system with these phones over the Abyss with high end associated DAC/preamp/computer/turntable etc...... So you ask WHY? Electrostatic is a different sound, cleaner in a different way but that's for the listener to decide, and the associated equipment they have. For instance if you a system for speakers Electrostatic is a problem. For a isolated headphone system Blue Hawaii and Stax SR-009s is a very strong sound.I have compared with Shangri-La Jr amp system w/Shangri-La and Stax 009S The Stax is not only a little better, not as thin sounding, probably can compete with any any Electrostatic Headphone around the $4500 range Highly recommended for headphone setup!!!"
"Customer service was excellent. The shipping was free and it they did not take very long to arrive. All my questions were answered and calls/emails returned promptly. Great experience overall. The sound of the 009s is the best I have ever had. Ton's of detail, resolution and speed. Most exciting audiophile purchase I have ever made."
