This is a guitar link that lets you connect your guitar to your computer via USB to use as a guitar amp or recording system. It's an excellent gadget for beginners and experienced players alike to practice and perfect their abilities and tunes. Features: Plug in your favorite guitar and turn your PC or Mac computer into a guitar amp and recording system without any other hardware Stereo Headphone output lets you jam with your computer and can also be used for monitoring with active monitor speakers Connect via USB cable, requiring no external power source Variable-speed file playback function for MP3, WAV, AIFF audio files-perfect for easy learning and practicing Software driver application included Specifications: Supported OS:Windows XP SP2/Vista/7, MacOS 8.5, 8.6, 9.x, OS X Interface: USB Audio Quality: 24-bit, 44.1/48kHz Cable Length: 140cm Weight: 90g/pcs Package Included: 10 x Guitar to USB Interface Link Cable Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.