With this, the owner finally relented and parted with his beloved gramophone. In 1998, while in India, Lin discovered a 1921 British-made large-horned two-track stereophonic gramophone. This machine utilized one phonographic needle to feed two separate acoustic pickups featuring diaphragms of different thickness to produce high and low notes. This was one of the earliest two-track stereo systems.
一九九八年，林本博在印度發現一九二一年英國製的雙聲道大喇叭留聲機，這部留聲機以一支唱針牽動兩個唱頭，依振動膜的厚薄發出高低音，可算是最早期的「二聲道」。