Apple Macintosh PlainTalk Microphone 590-0617-A, 1990, made in Japan

Link: wikipedia | Using a Plaintalk microphone for Linelevel-only Macintoshes

Country: Japan

Year: 1990

Name: Apple Macintosh PlainTalk Microphone [590-0617-A]
Model number is 590-0617-A
Features a 3.5mm jack connector

Apple produced two microphones under the product name "Apple PlainTalk Microphone". The first shipped inclusive with Macintosh LC and early Performa models, and was circular in appearance. It was designed to sit in a holder attached to the side of a CRT display, and be lifted out and held by the mouth when talking. The second model was introduced alongside the AV models in the Macintosh Quadra series in 1993 but was also sold separately. It was designed to be positioned on top of the screen and to be sensitive to sound from the front. Both models had a longer connector, the tip of which was used to provide the microphone with bias voltage.