- use a good quality USB cable
- Disconnect all USB devices connected to your Mac
- If you have Apple Cinema Display powering your MacBook via Thunderbolt, please USB ports on Display
With the Mac AND WA7 powered ON, disconnect the USB cable. Wait a few seconds.... reinsert the USB cable. Open AudioMidi and right-click on the device listed as “Speaker” in the device section on the left pane. Ensure that “Use this device for sound output” is selected. “24bit Integer” should now be available in the drop down list on the right side. You can then select the sample rate.
Lastly, try a powered USB hub like the one listed below.
We can also schedule a support call if you like.
Edited by HiFiGuy528 - 8/20/14 at 10:18am