Stereo-Pak
AKA
4-track, CARtridges
Era
1962–1970
Format
analog
Developed by
Earl ‘Madman’ Muntz
(Max) Capacity
45 minutes
Size
13.3 × 10.2 × 2 cm
Fun facts
- This format was a market success for several years until its successor, the 8-Track, became more popular despite being lower quality
- Unlike its predecessor, the Fidelipac, this format used a movable head to switch between two programs
- This format was installed in cars but also available as home players
