1. Working with Mullin, Ampex rapidly developed two-track stereo and then three-track recorders . 2. The first software-based digital multi-track recorder , called Deck, was released in 1990. 3. In 1979 Ampex introduced their most advanced 24-track recorder , the model ATR-124. 4. The recorder has a double recording head, similar to a two-track recorder . 5. Previous albums were either partially or completely recorded on a Portastudio 4-track recorder . 6. By the late 1970s, 3M introduced the first digital multi-track recorder . 7. The majority of the tracks were recorded using a three-track recorder . 8. By late 1968 or early 1969 Decca had obtained its own 8-track recorder . 9. At this point, Brown could use his 4-track recorder and his then-innovative synthesizer. 10. "Do Anything " was written and recorded on a 4-track recorder in Minnesota.
