Griffin Support
How Do I Use the iMic in GarageBand? (Mac)
1. iMic Setup:To select the iMic as an Input device, go to System Preferences and choose Sound. Click on the input tab and select the iMic. Then connect your microphone and speak into it. If you do not see the input level move, try pushing the switch toward "mic" to enable the internal preamp.
Once you see a level, click on the output tab and choose "Built-In Audio" if you want to hear the audio through your computer speakers. If you are going to be listening to headphones or speakers connected to the iMic's output, select the iMic as the output device instead.
2. Audio MIDI Setup:Open Audio MIDI Setup (Applications > Utilities). In the System Settings, Default Input pop-up menu, select iMic USB audio system. In the Properties For pop-up menu, select iMic USB audio system. Under Audio Input, make sure that Format is set to 44100.0Hz, 2ch-16bit.
3. In GarageBand:Open GarageBand and select Preferences from the GarageBand menu. Click the Audio/MIDI icon in the Preferences window. Select iMic USB audio system in the Audio Input pop-up menu and close the Preferences window. Select New Track from the Track menu.
Click the Real Instrument tab, then select Basic Track > No Effects (alternately, select the type of instrument you want to record as well as whatever effects are available).
Set the Format to Stereo, and set the Monitor to On if you want to monitor your audio as you are recording. Click OK and start recording!