REN904 spezial, Opta, tests NOS+, perfect condition, very rare tube!
Out of stock
Opta REN904 spezial.
Most likely made in Germany by Opta in the 1940ies, this tube looks great and tests fantastic. The The metalization has only minor blemishes from the last 70+ years.
The tube tests with nearly 120% of a new tube and we guess it was never used since production.
This is a very rare tube and a perfect fit for any serious pre-war tube collection…. or simply as a nice tube in any set-up that requires a REN904.