Used for several months. I am selling it because the sound is not to my liking. It's almost like new. It was working properly in a Cubase Pro environment. USB audio interface, 2x XLR/TRS inputs, direct monitoring function. - Model: IXO 22 - Connection type: USB audio interface - Software: Cubase AI, Cubasis LE - Input/Output terminals: 2x XLR/TRS combo inputs, 1x headphone output, 2x TRS outputs - Monitoring function: Direct monitoring - Power supply: USB bus power - Special features: ASIO compatible - Controls: Gain adjustment knob Accessories: Box, USB cable, instruction manual, etc. Thank you for looking.