VINTAGE Ampex TUBE Speaker Amplifier Model A-692 POWERS UP. I plugged the amp in and it powers up and the tubes light up. I plugged an electric guitar into the “Tape” jack but could not get any sound out of the amp. Amp case still looks good. It is missing one of the knobs. In the last 2 photos you can see that the amp powers up with the pilot light on and the tubes lit up. This amp is heavy, 30 pounds.