It has not been tested further than a tube check. There is a strip of untested connections that will come with it. Two of these ports are not connected. There is some light wear to the face plate, no cracks in face, a bit of surface rust. It has not been cleaned.The item "Altec 1567A Mixer Amplifier Tube Mic Preamp VU meter USA" is in sale since Friday, October 25, 2019. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "bucketlist79" and is located in Dayville, Connecticut. This item can be shipped to United States.