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General| Impedance | 56 Ω |
|---|---|
| Driver unit | 50 mm |
| Magnet type | Neodymium |
| Ear coupling | Circumaural |
| Headphone frequency | 10 - 30000 Hz |
| Headphone sensitivity | 98 dB |
| Dimensions (WxDxH) | 188 x 106 x 200 mm |
| Maximum input power | 0.3 W |
| Cable length | 3 m |
| Product color | Black |
| Recommended usage | Music |
| Connectivity technology | Wired |
| Connector contacts plating | Gold |
| Microphone type | Not available |
Weight and Dimensions| Weight | 222 g |
|---|
Details the HD668B headphones' sound quality, design, and suitability for professional recording studios.
Provides specifications for frequency response, impedance, acoustic principle, sensitivity, and power handling.
Recommends safe listening levels to prevent hearing damage, referencing OSHA, CDC, and NIOSH standards.
Covers ear pad replacement, headphone cleaning, and lists all included accessories in the package.
Highlights a recommended headphone amplifier and provides contact details for Superlux Taiwan.
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