Selling because I'm switching to a multi-effects unit. This is a fantastic unit that significantly improves the quality when placed at the end of your signal chain. I've been using it for about a year, and it works perfectly. Multi-function effector OX STOMP, silver finish, featuring six knobs and two switches. - Model Name: OX STOMP - Color: Silver - Input/Output Terminals: XLR Output, Line Output, USB Connection - Number of Knobs: 6 - Number of Switches: 2 Thank you for looking.