ART TPS II Tube Pre-Amp with upgraded tube! New Russian 12ax7 tube installed! I used this to power microphones and a tube pre amp for my bass rig. Sound really warm and has good chunky distortion unit currently resides in a gator case no issues it works as it should. I no longer use the preamp anymore. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "alamo_datacom" and is located in this country: US. This item can be shipped to United States.