The UCG102 is a USB interface that, like a guitar amp, receives signal from your guitar via a ¼ " input jack. A built-in USB cable then sends the signal directly to your computer, in addition to tracking your latest masterpiece. It has a ¼ " headphone jack and Phones volume dial so you can monitor your performance as you record, a Clip LED to tell you when your signal is too hot, and a Hi/Lo level selector.