Features:1, Easy Plug and Play installation. USB Bus Powered-No external power supply required.2, Stereo headphone output allows you to jam from your computer and can also be used for monitoring from active monitor speakers.3, variable speed file playback function for MP3, WAV, AIFF audio files, ideal for easy learning and practice.4, USB Guitar Connection Cable is a professional tool that allows you to transform your desktop computer into a fantastic work platform, where you can enjoy classic effects, in the studio as well as on stage.5, OS support: Windows XP (SP2) and Windows Vista, for OS 8.5 or later. Specification:Size: 25X51X25MMIntrance of Input Port: High Resistance (hi) 250K ohms, Low Resistance (Low) 400K ohmsHeadphone Jack Output Impedance: 50 ohmsLarge Output Level: -2dbu, 2*3.7mW at 100 ohmsPackage Included:1pcx Guitar to USB Interface Connection CableNote:Please allow slight dimension difference due to different manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee that the style is the same as shown in the pictures.