Magewell USB Fusion HDMI & USB Video Capture Device - Manual (Page 112)

Advanced Settings
When the input original volume is too low, for example, the audio volume from
some microphone may be low, you can increase the volume or set gain in
advanced settings.
The advanced settings allows you to adjust volume or the line in device,
headset device, and WEB CAMERA device.
In the VOLUME area, click Advanced . From the Device drop-down list box,
select USB Fusion Audio or Device connected to WEB CAMERA port .
When multiple device are connected through an USB Hub, multiple
Device connected to WEB CAMERA port items will be displayed.
USB Fusion Audio : Adjust volume for devices including the line in device
and headset.
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Headphone : Adjust output volume for the headset port.
Mic Gain : Set gain for the microphone connected to the headset port. By
default, there is no gain.
Line Gain : Set gain for the device connected to the line in port. By
default, there is no gain.
When you plug a microphone directly to the line in port, you may
need to adjust the line gain in order to make the microphone
input audible, for the microphone signal may be too low.
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Mic : Adjust the original volume of the microphone connected to the
headset port.
Line : Adjust the original volume of the device connected to the line in
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