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Sony ECR-400

Stereo Headphones (1975-81)

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Sony ECR-400

Description

The ECR-400 are high quality electret condenser headphones using a uni-electret as a diaphragm, which is newly developed by Sony and requires no external power supply.

The scalene-pentagonal diaphragm avoids undesirable vibration and assures wide frequency range.

Specifications

Type: electrostatic headphone

Frequency Response: 20Hz to 20kHz

Impedance: 30Ω

Note: external adaptor

Cord Length: 240cm

Weight: 380g

Year: 1978

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