Zoom H3-VR Operation Manual page 15

Left and right sides
VOLUME buttons
Use to adjust the volume.
PHONE OUT jack
This can output sound to headphones.
MIC GAIN dial
Use to adjust the mic gain.
USB port
Connect this to a computer or iOS device to use the
The dedicated AC adapter (ZOOM AD-17) can also be connected here to use AC power.
LINE OUT jack
This can output sound to a connected device.
as an audio interface or card reader.
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