SONY MDR-E121/MDR-E122
¥ 1,400 (around 1987)
Commentary
A monaural ear receiver with a small 13.5 mm diameter transducer.
Uses OFC litz wire cord.
The MDR-E121 is an L-type super mini plug specification and the MDR-E122 is an L-type mini plug specification.
Model Rating
| Type | Open air dynamic type |
| Units Used | Φ 13.5 mm Dome Type (CCAW Adopted) |
| Impedance | 16 Ω |
| Sensitivity | 104dB/mW |
| Max Input | 50mW |
| Playback frequency | 20 to 20,000 Hz |
| Weight | 2.2g (cord not included) |
| Cord Length | 1.0m OFC Litz wire |
| Plug | L-Type Super Mini Plug (E121) L Type Mini Plug (E122) |