Possible Cause 1:The Audiophile USB hardware or software device drivers are not properly installed. See the installation sections of this manual for further information.
Possible Cause 2: There is a resource conflict between your computer’s USB controller and another device in your computer (PC only). Check the Device Manager for your USB controller’s IRQ against those of the other installed devices. If necessary, change the settings for the one or more of the devices (refer to your computer or motherboard manual).
On Mac OS, check the Sound Control Panel, and make sure it is selected or de-selected as needed.
Possible Cause 3:Your application software has not been properly configured to use the Audiophile USB as its audio output device.
Possible Cause 4: Improper connections of the audio accessories.Verify that the Audiophile USB analog audio outputs are properly connected to a digital mix deck or external mixer/amplifier, or the S/PDIF Out is connected to an external digital audio device capable of receiving S/PDIF.