The 5-pin DIN 180-degree connector was used as the audio connector on European hi-fi equipment (tape decks, amplifiers, turntables) in the 1970s–80s, before RCA phono became universal. Carries stereo audio in and out.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Output Right | Right channel output (to amplifier) | ADC |
| 2 | GND | Common ground | GND |
| 3 | Output Left | Left channel output | ADC |
| 4 | Input Right | Right channel input (from source) | ADC |
| 5 | Input Left | Left channel input | ADC |