The Tung-Sol KT150, with its impressive plate dissipation of 70 watts, stands as the most potent octal beam tetrode ever made. Utilizing a pair of KT150s enables the construction of an amplifier capable of delivering close to 300 watts of power.

Its glass envelope, uniquely shaped like an egg-shaped balloon, was engineered to enhance thermal dissipation and sustain an optimal vacuum for superior sound quality. The rounded design of the glass envelope ensures that the Tung-Sol KT150 is immune to microphonic issues.