I've been using this for about six months. I'm selling it because I bought a new one. I've confirmed that it works, and it's still usable. An audio interface that can adjust multiple inputs. - Brand: behringer - Model Name: Audio Interface - Features: MIC/LINE GAIN 1, INST GAIN 2, OUTPUT adjustment knob - Included items: Cable - Condition: Unused (opened) Thank you for looking. I will pack it simply to avoid dirt and scratches, and then ship it.