Multimedia USB device noise
Sounds like a problem with the audio format. Open the Audio MIDI Setup application, select your USB device, and try different combinations for audio format (sampling rate, channel/bit-depth).



If your device is locked at a sample rate and/or bit-depth, this should be a workaround. Try creating a Multi-Output Device with your device and the Built-in Output. (note: with the multi-output, you will have to set the volume on each device individually)




Click the + icon at the bottom left and select Create Multi-Output Device.
Under the "use" column, select Built-in Output and your device.
Set the Master Device to Built-in Output. This will allow you to choose different sample rates based on what is allowed for Built-in Output.
Lower the volume on Built-in Output (essentially muting it so sound only goes through your device)
Right-click on your device under the Multi-Output Device and check Resample this subdevice.
In System Preferences > Sound, change the output device to the Multi-Output Device.


Now you can change the sample rate of the multi-output device.