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I don’t think it was 4 ... it seems a waste they didn’t use the extra channel actually ... but there was a track for each side.

• dylan604 6y ago
  But it was 4 tracks. That's why you could use a regular cassette in a 4-track recorder. If you used a regular cassette in a 4-track recorder, you would hear the 2 tracks from Side A as normal, and then the 2 tracks from Side B in reverse.
  • rusk 6y ago
    Only if stereo. You only need 2 tracks for mono. One for each side.
    • dylan604 6y ago
      But that's not how audio cassettes worked, otherwise they would not be compatible. Consumer cassette players/recorders were 4 tracks.
      • rusk 6y ago
        Yeah, duh. Two tracks for each side.