Pro Audio Support

Q:
AudioPhile USB : The Device Volume control in Windows’ Sounds and Audio Devices (or other software such as MUSICMATCH Jukebox) is grayed out and does not function.
 
A:
Audiophile USB does not make its volume control parameter
available to the host computer’s operating system. Use the Head Phone Level and Output Level knobs on the front panel of your Audiophile to adjust volume.