Features: 1.Easy Plug and Play Installation. USB bus powered--Requires no external power. 2.Stereo Headphone output lets you jam with your computer and can also be used for monitoring with active monitor speakers. 3.Variable-speed file playback function for MP3, WAV, AIFF audio files perfect for easy learning and practicing 4.USB Guitar Link Cable is a professional tool that enables you to turn your PC computer into fantastic working platform on which you can use the classic effects, in the studio as well as on stage 5.Support OS: for Microsoft Windows XP (SP2) and for Windows Vista,for Mac OS 8.5 or above specification: 1, Easy Plug and Play Installation. USB bus powered--Requires no external power. 2, Stereo Headphone output lets you jam with your computer and can also be used for monitoring with active monitor speakers. 3, Variable-speed file playback function for MP3, WAV, AIFF audio files perfect for easy learning and practicing 4, USB Guitar Link Cable is a professional tool that enables you to turn your PC computer into fantastic working platform on which you can use the classic effects, in the studio as well as on stage 5, Support OS: for Microsoft Windows XP (SP2) and for Windows Vista,for Mac OS 8.5 or above s: Input impedance: high resistance (hi) 250k ohms, low resistance (low) 400k ohms Headphone output impedance: 50 ohms The maximum output level: -2dbu, 2 * 3.7mW 100 ohm Sampling: 16bit, up to 48kHz Gross weight:78g Package Included: 1 x USB Guitar Link cable 1 x Software CD driver Note: This product is not compatible with for Windows 10 system.