The history of X, the gene of Ω
The ideal electrostatic earspeakers. The fixed electrode which reduces air resistance and the effect of reflection. This electrode also has the high sound transparency. This vision was already found in the metal-mesh electrode of SR-X, which was released in 1970. After that, STAX challenged to realize metal-mesh electrodes for SR-Ω in 90’s again. However, the big metal-mesh electrode was difficult to manufacture. So, the mass production was extremely difficult. This is why SR-Ω was produced in small quantities even though this product has high quality sound.
 
Evolution to “MLER-3”
20 years have passed since SR-Ω was released. In the meantime, the manufacturing technology of metal-mesh was improved. And through the development of SR-009, the know-how of manufacturing multi-layer fixed electrodes evolved. These factors realized the new flagship “SR-X9000”. “MLER-2”, which was installed in SR-009S, evolved into the four-layer “MLER-3”. An etching electrode and a metal-mesh electrode are bonded using the diffused junction (thermocompression bonding). After 2 generations of STAX flagship models, STAX’s manufacturing technology makes a significant contribution to the stable mass production of big round shaped metal-mesh electrodes. For MLER-3, sound transparency evolved more smoothly than conventional multi-layer fixed electrodes. And the rigidity characteristic resistant to vibration also evolved.
 
The diaphragm increases 20% in size compared with the previous flagship model
The diaphragm is made of ultra-thin super engineering plastic film. Due to weight saving close to zero, great transient characteristic is realized. From the base to the high range, the linearity of the sound is improved. The area of the diaphragm increases by 20% compared with SR-009S. This breakthrough realizes the widest sound field ever.