IE 4 earphones
| Frequency ranges | 40 – 20,000 Hz |
| Max. sound pressure level | 118 dB SPL |
| Sound pressure | 106 dB (1 kHz / 1 V rms) |
| Impedance | 32 Ω |
| Nominal impedance | 16 Ω |
| Cable length | 1.4 m |
| Connector | 3.5 mm stereo plug, gold-plated |
| Frequency ranges | 40 – 20,000 Hz |
| Max. sound pressure level | 118 dB SPL |
| Sound pressure | 106 dB (1 kHz / 1 V rms) |
| Impedance | 32 Ω |
| Nominal impedance | 16 Ω |
| Cable length | 1.4 m |
| Connector | 3.5 mm stereo plug, gold-plated |