Used only once, so it's practically new. I'm selling it because I don't know how to use it. It's a used item, so please comment before purchasing if you have any concerns. If you want the outer box, please comment before purchasing. (The price may increase if the outer box is included.) Instant purchase is OK. A mini studio with 2 USB microphone inputs. - Model Name: US-32 - Connection Type: USB - Number of Microphone Inputs: 2 - Volume Adjustment: Yes - Effect Function: Yes - Instruction Manual: Yes Thank you for viewing.