Visit and download the USB 2.0 driver.If you are recording something very loud or very quiet, adjust your input volume setting accordingly. Try starting the Input Volume at about 80%. For detailed instructions on how to choose the recording and output resolution of the Yeti.Set the output volume to 100%, then adjust your listening volume with the physical volume knob on the Yeti. If you want to use headphones through the Yeti, go to the output tab, and choose the “ Yeti Pro Stereo Microphone” option.In the input tab, select “ Yeti Pro Stereo Microphone”.Go to System Preferences and select the Sound icon.Set the microphone gain knob to about 50%. Use the USB cable to plug the Yeti into your computer.Setting up the Yeti on a Computer On MAC NOTE: OSX 10.6.4 or higher is required. 2 Setting up the Yeti for Analogue (XLR) Recording.