MXR Bass Preamp M81 I bought this to correct the sound of my active bass, but the preamp in my bass has a stronger character, so I ended up not using it. It's very easy to use with passive Jazz Basses, Precision Basses, etc., but I'm mainly using active basses now, so I'm selling it. It's a beautiful item, used only for a short period of time, but if you are concerned about minor details, please refrain from purchasing to avoid any trouble. Price includes shipping. Please refrain from price negotiations. I will not be able to respond.