I'm selling this because I haven't used it. Although I haven't used it much, the knobs show some signs of aging. I'll include a cable, but it's not the original. The Focusrite Scarlett 2i4 is a USB audio interface with XLR/TRS combo inputs and analog volume knobs. - Model Name: Scarlett 2i4 - Brand: Focusrite - Included Items: Box, manual, cable - Input Terminals: XLR/TRS combo input - Output Terminals: TRS output - Volume Control: Analog volume knob Thank you for looking.