Just in case...you sure you change your mac prefs to output to USB...it's either one or the other speakers or USB...
Go to prefs, click audio, click usb audio Codec...and you should be fine...else I'd double check you DAC is set to USB and not opt or coax...and your proper source is selected on your Integrated.
Go to prefs, click audio, click usb audio Codec...and you should be fine...else I'd double check you DAC is set to USB and not opt or coax...and your proper source is selected on your Integrated.