FOCUSRITE ISA ONE SINGLE CHANNEL MIC PRE-AMP. I recently upgraded and will not be using this pre amp any longer. As you can see, its in mint condition. It even has the plastic still on the screen! The item "FOCUSRITE ISA ONE SINGLE CHANNEL MIC PRE-AMP" is in sale since Saturday, August 22, 2020.This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "justinoxley" and is located in Carteret, New Jersey. This item can be shipped to United States.