Fostex M20 is a professional 2-track recorder/reproducer capable of recording and playing back audio on both left and right channels simultaneously. It features precise splicing with the edit function and variable-speed playback with the pitch control. Other capabilities include punch-in recording, auto-play, and repeat functions. With its LED bar graph meters, you can accurately monitor audio levels. The M20 also allows you to monitor input signals, sync output, and playback output.