Universal Audio SOLO 610 Vacuum Tube Mic Preamp & DI Box. Adds AMAZING tube tone to any mic or instrument input. The item "Universal Audio SOLO 610 Vacuum Tube Mic Preamp & DI Box" is in sale since Tuesday, June 4, 2019. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips".The seller is "dcb1fancarlos" and is located in West Palm Beach, Florida. This item can be shipped to United States.