Zoom H4n Pro Operation Manual page 29

These are the special features of the H4n Pros built-in microphones.
Stereo recording is often done by placing two micro-
outward will result in stereo separation, but the recording
stereo image.
placing two microphones in a crossed pattern (opposite
angles), the H4n Pro can cover a wide area and capture
Sounds reach both mics simultaneously, so no phase
cancellation occurs between right and left channels.
XY mic placement
Capturing the stereo image center
Ordinary stereo mic placement
Stereo images without phase cancellation.
Ordinary stereo mic placement
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