Zoom H4n Pro Operation Manual page 38

In STEREO mode, you can select 2 different inputs
either INPUT MIC or INPUT 1 and 2, and record and
Files are saved in one of the ten sub-folders in the
STEREO folder.
In STAMINA mode, the functions are limited to
maximize the battery life time.
037
In 4CH MODE, the H4n Pro records two stereo
INPUT 1 and 2.
These FILES are saved in one of the ten 4CH
sub-folders.
You can record tracks in MONO or STEREO from
INPUT 1, INPUT 2 and a stereo microphone.
You can combine them with tracks recorded in other
modes and overdub existing tracks.
In MTR mode, project data and settings are saved as
a project in the MTR folder.