Aurex EM-520
¥ 25,000 (around 1976)
Commentary
Condenser microphone using back electret system.
Model Rating
| Type | Condenser microphone |
| Unit | Unidirectional back electret condenser |
| Frequency characteristic | 30 Hz to 20 kHz |
| Sensitivity | -73dB ± 3 dB |
| Maximum input sound pressure | 130dB SPL |
| Output impedance | 600 Ω |
| Pwer | 1 AAA (SUM-3) x (1.5 v) |
| Battery life | Continuous use Approx. 8,500 hours |
| External dimensions | Length 213x Diameter 23 mm |
| Weight | 215g (including battery) |