This product is a pair of vintage GE 5814A preamp tubes, known for their high-quality performance. The tubes have been tested and have a strong pair with readings of 2700/2750 and 2900/2850, ensuring reliable and consistent audio output. These vacuum tubes are a valuable addition to any vintage audio setup, providing a touch of nostalgia and character to your sound system. With the trusted GE brand and specific model number, you can expect top-notch quality and performance from these vintage preamp tubes.