| IPN-HD301 |
| 1) Mic Type: Ф6mm x 5mm | |
| 2) Impedance:maximum2.2KΩ | |
| 3) Sensitivity: -56db ± 2db(0db=1v/pa) | |
| 4) S/N Ratio:More than 60db | |
| 5) Sensitivity Reduction:Within-3db at 1.5v | |
| 6) Mic Frequency Range:20Hz-20,000Hz | |
| 7) Speaker: Ф40mm | |
| 8) Sensitivity:108db± 3db S.P.L at 1kHz | |
| 9)Plug Type: Ф3.5mm | |