
Description
The new Stax SR-009D Electrostatic Headphones are equipped with a large circular sound unit that features innovative fixed electrodes. The key technology for high-end models, MLER (Multi-Layer Electrode), originated with this model. Using thermal diffusion bonding technology, which unifies photo-etched metal plates at the atomic level under vacuum conditions, this new fixed electrode achieves exceptional planarity, low resonance, and high sound wave transmission. The SR-009D remains the most affordable option for experiencing the sound of current STAX high-end models.
The new SR-009D features a new colour scheme and adopts the replaceable cable structure, which is now standard across the current lineup. This enhances the usability of the earspeakers by enabling future compatibility with high-quality cables and easy maintenance in case of unexpected cable breakage.
Specifications:
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Type: push-pull electrostatic sound element, open-air type enclosure
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Sound element shape: large round shape
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Frequency response: 5 - 42,000Hz
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Electrostatic capacitance: 110pF
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Impedance: 145k
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Sound pressure sensitivity: 101dB
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Bias voltage: 580V DC
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Attached cable conductor: OFC
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Cable: parallel 6-strand, low-capacity wide cable
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Cable length:2.5m
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Ear pad: genuine sheep leather (skin touching portion), artificial leather (surrounding portion)
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Weight: 452g (ear speaker)