vintage Sony earphones MDR-E515 Fontopia Twin Turbo

Made in Japan. Year 1994. 3.5 mm Golden Jack

specifications:
- silent cap
- twin turbo
- driver units: 13.5 mm dia
- impendence : 16 ohm at 1 kHz
- sensitivity: 108 dB/mW
- frequency range: 16 — 22,000 Hz
- 3.5 mm gold plated jack
- cable lenght: 1.2 m
- mass appx. 5 g (without cord)