| Feature | Specification |
| Article number (SKU) | 700240 |
| Transducer principle | dynamic, open |
| Transducer size | 38 mm |
| Frequency response | 8 – 41,500 Hz |
| Impedance | 300 Ω |
| Sound pressure level (SPL) | 104 dB (1 kHz, 1 Vrms) |
| Total harmonic distortion (THD) | <0.04% (1 kHz, 100 dB) |
| Ear coupling | Over-Ear |
| Weight | 260g |
| Adapter | 6.3 mm (1⁄4 inch) to 3.5 mm |
| Connector | 6.3 mm (1⁄4 inch) jack plug, 4.4 mm balanced plug |
| Cable length | 1.8 m |
| Country of origin | Ireland |
| Magnetic field | 4.5 mT |
HD 660 S2 Specifications
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