High End headphones
Stax SR-009 S

Product code: 89777
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Description

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Description

Best Hi-End Headphones according to Dr.Head!

Features:

  • Flagship model of open electrostatic headphones from STAX
  • Ultra-thin diaphragm
  • Multi-layered MLER2 (Multi Layer ElectRodes) electrodes
  • Six-wire cable made of high-purity oxygen-free copper (6N) with silver coating
  • 10-position adjustable headband
  • Lamb leather earpads for the part that contacts the ear and high-quality synthetic material for the surrounding part
  • Aluminum ear cups
  • Made in Japan

The SR-009S is the latest attempt by the Japanese company Stax to create the best headphones in the world. Thanks to the updated drivers, earpads, and other design elements, this is a definite step forward while still preserving most of the original appearance and character. Compared to the original model, these headphones have improved bass response and tamed high-frequency peaks.

The multi-layered MLER electrode, developed for the SR-009 model, has been refined and improved to the MLER2 version. Through finishing and etching processes, the edges of the electrode openings have been smoothed, reducing air resistance and resulting in improved sound permeability. Additionally, the electrodes themselves have been gold-plated with high specific mass to minimize resonances. At the same time, by reducing the electrical resistance of the electrode with gold plating, STAX engineers have achieved an increase in speed, clarity, detail, and powerful, textured sound.

The membrane, like in the first version of the model, is made of an ultra-thin film manufactured from the latest high-molecular-weight polymer - a multi-layered structural plastic. It is much stronger and thinner than conventional structural plastic. The use of the best materials has allowed for excellent frequency response across the entire frequency range.

Almost every detail in the SR-009S headphones is the result of high-precision machining. The housing is machined from aluminum, which traditionally provides excellent characteristics for audio equipment: high sound quality, durability, and lightweight. The cable is made of high-purity 99.9999% copper with an additional silver coating - the best solution for signal transmission from the amplifier to the headphones.

The earpads of the headphones (or the headband, as STAX themselves call them) are handmade by skilled craftsmen using the best materials - natural and synthetic leather with different properties for different parts of the product. Together with the adjustable headband, they provide comfortable use of the headphones for extended periods of time. Enjoy the best music with the best headphones!

Package Contents:

  • STAX SR-009S headphones
  • Wooden storage box
  • Documentation
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Characteristics

Characteristics

Brand
Earpads material

The material of earpads affects both your comfort and the sound. It can be leather, eco-leather, velour, fabric/microfiber and foam rubber.

Glossary of terms
leather
Headphone type

Over-Ear (cover the ear completely), on-ear (pressed against the ear), in-ear (inserted into the ear canal) or earbuds (inserted into the auricle, but not inserted into the ear canal).

Glossary of terms
wired
Kind of headphones
over-ear

The type of headphones that cover the ears and can provide complete noise isolation.

Словарь терминов
Cable length, m

The length should allow you to lay the cable with a small margin. The longer the cable, the more impact it can have on the sound.

Glossary of terms
2.5
Color
Color shade
silver, black
Connector shape
straight
Connectors
5-pin
Driver type

Most of the headphones are dynamic but there are electrostatic, isodynamic, etc.

Glossary of terms
electrostatic

The thinnest membrane (usually mylar) charged from a high-voltage power supply, which is hung up between two grid electrodes to which an audible signal is applied.

Словарь терминов
Headphone sensitivity, dB

More sensitive headphones will play louder than headphones with less sensitivity (with the same signal level and resistance)

Glossary of terms
118
Impedance, Ohms

No higher than 32 Ohms for smartphone headphones. When using a good player or amplifier, it can be up to 100 Ohms. For stationary models you should coordinate the impedance with the amplifier power

Glossary of terms
145000
Material
leather, aluminum, plastic
Number of drivers

The number of drivers in each headphone. However, quantity does not equal quality. Driver coordination, their configuration, correct crossover, sound bores affects the sound

Glossary of terms
1
The highest frequency, kHz

The upper limit of the frequencies reproduced by the device. The human ear hears the standard frequency range: 20 Hz – 20000 Hz.

Glossary of terms
42
The lowest frequency, Hz
5
Type of acoustic design

Open (with no insulation) or closed (passive noise insulation) or semi-open (intermediate version). Open headphones sound more airy and provide a wide stage, closed ones provide noise isolation and amplify low frequencies.

Glossary of terms
open
Model
Stax SR-009S
Weight, g
441
Service life, months
24
Warranty, months
12
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