These are NOS ECC82/12AU7 Telefunken vacuum tubes in the original box. Known for their precision and delicate accuracy, Telefunken tubes are some of the most sought after audio types in the world. Perfect and appropriate for high-end amplifiers and pro audio equipment, great NOS tubes will enhance the sound quality and performance of your valuable gear.
This particular example is a smooth plate NOS tube that has never been tested or used and dates January 1970. The smooth plate versions give you warmer and richer mid range than the ribbed ECC82’s. These are later and do not bare the diamond logo on the bottom.