Review on Electrostatic Headphone Stax Sr-009s

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1. introduction

Stax finally released the upgraded model sr-009s of the flagship model sr-009. 009 can be the representative of the flagship in the headset market beside for Sennheel Orpheus and hifiman Shangri-La which is too expensive, Now the new upgraded version of 009s is released. Compared with 009, how many changes in the sound and the appearance of changes, I believe that is what the majority of electrostatic headphones enthusiasts care about. 

Before I played 009 for a while, I really experienced the high quality and transparency of 009, but 009's high frequency and slightly thin mid-range voice made me not very comfortable, so I changed 009 to 007mk1. The new 009s was released in a short time. Some first round buyer said, the 009s appeared to enhance the fullness of the mid-range vocals, and the high-frequency is no longer sharp. This kind of evaluation seems to be a combination of the high quality of 009 and the tuning advantages of 007mk1. If this is true, sr-009s is indeed the first choice of static headphones.

My reach friend just got a 009s last week, so I take my 007mk1 to listen and compare to the return of the electrostatic king. This evaluation will discuss the initial impression of 009s on the 009s. 

2. Appearance change

At first glance, it seems that 009s and 009 are no different. The head beam and metal earphone frame primarily maintain the shape of 009.

On the front side, the only difference is that the color of the inner plate becomes dark gold.

From the side, it is almost impossible to tell whether it is 009 or 009s.

Like two twin brothers

Take a closer look and there some differences in details.

1. The color of the internal plate changes from the original silver to the dark gold.

2. The dust-proof metal mesh in 009 is concave, and that for 009s is convex. Such changes seem to affect the acoustic characteristics to bring about changes in sound.

3. At the same time, the logo of stax on the head beam has also become golden.

4. Through the inside of the earmuffs, the light of the 009s is more visible than that for 009. In fact, the material of the air filter in the earmuffs has changed, and the mesh cover has become more sparse.

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