Made in W.Germany by Telefunken.
Diamond logo. The big logo version. Very rare and excellent sounding.
Maybe the most commo tube. The best!!

Nos in box. Matched pair and quad are available

Made in W.Germany by Telefunken.
Diamond logo on the bottom. The premium of ECC82s. 
Long ribbed plates with two silver wings on each side.
Low noise, balance and detail sounding. Best of ECC82s in the World.
Used but tested as NOS tubes. The print is not clear. Matched pair are available.

Made in W.Germany by Telefunken.
Diamond logo on the bottom. The premium of ECC82s. 
Long ribbed plates with two silver wings on each side.
Low noise, balance and detail sounding. Best of ECC82s in the World.
Nos in original box. Matched pair and quad are available.

Made in W.Germany by Telefunken.
Diamond logo. The first type has 2 holes on each side of plate (top & bottom). 
Large print logo version. Maybe the most common tube. 
Great from Telefunken with warm sounding and very good Bass.
Nos in box.

Made in W.Germany by Telefunken.
Diamond logo. The second type has 2 holes on each side of plate (centered).
Small print logo version. Maybe the most common tube. Different mica stripe on top.
One of the best ECC83 ever made with detail sounding.
Nos in box.

Made in W.Germany by Telefunken.
Diamond logo. The third type is similar to the first version but has 3 holes on each side of plate (top, middle & bottom). 
Large print logo version.Warm and balance sounding.
Nos in box. Matched pair are available

Made in W.Germany by Siemens & Halske.
Triple mica and O-getter with douple supports.
They marked telefunken but made by Siemens. One of the great version. .
Great 12AU7s. Hard to find today. Very balanced and detailed sounding
Nos but no box. Matched pair are avaible.

Made in USA by Tung-Sol.

Long gray plate, D-Getter. Black glass. Eexcellent 12AU7 from USA.

Nos in original box. Matched pair are available.

Made in USA by Tung-Sol.
Long gray plate, D-Getter. Premium 12AU7.
Wide bandwidth, well balanced, excellent sound stage and air.Very good tube.

Nos in original box. Matched pair are available.

Made in USA.
Long gray plate, D-Getter. Premium 12AU7.
Wide bandwidth, well balanced, excellent sound stage and air.Very good tube.

Nos in original box. Matched pair are available.