• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Advanced Products Corporation preamp

Has anyone heard of an old company called Advanced Products Corporation - a Division of Wico?? I couldn't find anything with a Google search.

A local salvage yard has a nifty looking all-tube preamp made by that company. It has phono and line inputs as well as switches for contour, etc., like a lot of preamps of that vintage (50s - 60s my guess).

It said Model 28 on the faceplate with a funny logo but no manufacturer name. That was on the back of the chassis.