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**ES-sigma is a made-to-order product, contact us before purchase recommended. **


ES-sigma enables user to enjoy the speaker-like sound of this legendary model without having to be troubled by the availability, high price, service issues and driver deterioration problem which are common on the original sigma.  ES-sigma uses a pair of 404 drivers with has a higher resolution, imaging and transparency than the original sigma. 



ES-Sigma Electrostatic Headphone

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