Zoom B2FOUR Operation Manual page 72

Erasing the last overdubbed phrase (UNDO function)
The UNDO function can be used when it is set to ON.
1.
During playback, press and hold the
( in this example).
Restoring an undone overdub (REDO function)
1.
(→ Erasing the last overdubbed phrase (UNDO
After undoing
footswitch that corresponds to the looper effect (
(→ Setting the UNDO
– footswitch that corresponds to the looper effect
function)), press and hold the
in this example).
72
function)
–