All of them used ATRAC, Sony's compression standard. It was initially equal to 80 minutes, which covered exactly what a CD could. Later versions let you go further than the 80 minute limit, but they didn't become common until mp3 had already won that race.
In 2000 I had upgraded to a Minidisc, which didn't skip, and had a TOSlink input so I could rip CDs digitally to MD. Also upgraded my PortaPros to Grado SR60s.
numtini t1_j9m82a1 wrote
Reply to comment by chris22783 in Today I'm going back to 00s! by LSG4M3R
>Sony's proprietary compression format
All of them used ATRAC, Sony's compression standard. It was initially equal to 80 minutes, which covered exactly what a CD could. Later versions let you go further than the 80 minute limit, but they didn't become common until mp3 had already won that race.