The compact YAMAHA AG03 audio interface features 2-channel input and a variety of effects. - Model: AG03 - Brand: YAMAHA - Input Channels: 2 - Output Channels: 2 - Features: Compressor, Reverb, Loopback - Connectors: XLR/TRS combo jack, Monitor output - Power: USB bus power - Size: Compact design Thank you for viewing. I purchased this from Amazon Outlet (condition: used - very good), but I haven't used it, so I'm putting it up for sale. The main unit is in good condition and comes with accessories, but the outer box has some scratches and dirt (no smoking, no pets). Please refrain from purchasing if you are sensitive to used items.