What Line 6 has to say:
POD Studio™ GX is a compact audio interface that’s perfect when you want to lay down amazing-sounding guitar tracks quickly. Featuring a low noise 1/4-inch guitar input, a 1/8-inch headphone/line output, and a dedicated volume knob, POD Studio GX1 offers everything you need, and nothing you don’t. The simple and easy-to-use design makes setup as easy as plugging in your guitar. Layer your guitar tracks, add bass and create polished songs. With POD Studio GX you’ll always be ready to record your next musical idea or amazing riff.