Sennheiser HEV 90 Orpheus
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| Design: | Full size |
| Description: | Design: full-size, device type: wired headphones, acoustic design type: closed |
| Additional Information: | Electrostatic conversion system with electrodes made of special glass, high-end quality wave amplifier, analog-to-digital converter, a large number of optical inputs |
| Length of cable: | 3m |
| Device type: | Wired headphones |
| Maximum playback frequency: | 75000 Hz |
| Minimum repeatable frequency: | 25 Hz |
| Type of acoustic design: | Closed |