A reasonable analogy could be:
The transistor is like a lit path. The music is like shadows moving down this path.
If the path is fully lit 100% of the time, then the only issue is the shadows moving, (music)
in an AB amp, the light AND the moving shadows are being constantly varied. So the shadows may be disturbed by the light (Transistor bias) flickering.
The transistor is like a lit path. The music is like shadows moving down this path.
If the path is fully lit 100% of the time, then the only issue is the shadows moving, (music)
in an AB amp, the light AND the moving shadows are being constantly varied. So the shadows may be disturbed by the light (Transistor bias) flickering.