Penta Laboratories is a globally renowned manufacturer and distributor of a wide range of electron tubes and vacuum tubes. Their product portfolio spans broadcast, industrial, research, military, medical, scientific, and high-end audio applications. With over 8,000 stocked part numbers and an inventory exceeding one million vacuum tubes, Penta Laboratories holds extensive expertise, particularly in the production of ceramic/metal vacuum tubes, triodes, and tetrodes—a specialty of the company.