Matching Set of Two (2) GE Type 43 Audio Power Output Tubes are a set of vintage vacuum tubes, manufactured in the United States by the well-known brand GE. These tubes are new in box and come as a matching set, making them ideal for audio enthusiasts looking to restore or upgrade their vintage audio equipment. With their power output capabilities and authentic design, these tubes are sure to enhance the performance and sound quality of any vintage audio system. Guaranteed NOS