Used a few times. Please understand that this is a used item, as there may be some minor scratches on the input terminal. I will wrap this box in bubble wrap for shipping. This is a 2-channel USB audio interface, equipped with a crystal preamplifier and phantom power. - Model Name: M-TRACK DUO - Number of Inputs: 2 channels - Connection Method: USB - Output Terminals: R/L Main Out - Included Accessories: Cable, Manual Thank you for viewing.