Launch Extensions Manager: Select Apple Menu > Control Panels > Extensions Manager.
Verify that the USBPre Composite Class and USBPre Config Composite
Class drivers are enabled. Verify that the PGUSBPre driver is disabled.
Launch Sound Manager: Select Apple Menu > Control Panels >
Sound.
Select USB Audio as Input: From the Input tab select the USB Audio
device. Note: This may appear as an external Mic or as a
Sound In device depending on your configuration.
Select USB Audio as Output: From the Output tab select the USB Audio
device. Note: Depending on your configuration you may not
have a USB Audio option. Select Built-in for that case.
Set the Main Output volume to the desired Level: In the Output
window set the main volume.
Quit the Sound window when finished.
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