Zoom F8n Pro 8-Input / 10-Track Multitrack Field Recorder - Manual (Page 105)

5.
Use to set the standard output level, and press .
Setting Explanation
Line (+4 dBu)
This sets the standard level to +4 dBu. Only MAIN OUT1/2 can be
selected.
Normal (−10 dBV) This sets the standard level to −10 dBV.
Mic (−40 dBV)
This sets the standard level to −40 dBV. Only SUB OUT1/2 can be
selected.
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