It has only been on my rack in my non-smoking home studio. Go from solid state to tube! The item "Universal Audio 4-710d 4 channel Tube / Solid State Microphone Preamp" is in sale since Tuesday, May 17, 2016. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips".The seller is "haroldnavarrete" and is located in Indianapolis, Indiana. This item can be shipped to United States.