Vacuum tube collectors are individuals who gather and preserve vacuum tubes, which are electronic devices used to amplify signals in radios, televisions, and other equipment. These collectors often seek rare or vintage tubes, appreciating their historical significance and unique designs. Many vacuum tube collectors also enjoy restoring old electronics that utilize these components, contributing to the preservation of vintage technology. The hobby can involve attending trade shows, joining online forums, and exchanging information about different types of tubes, such as triodes and pentodes, as well as their applications in audio amplifiers and musical instruments.