a few years ago , I build this tube preamp with old tubes from WW II . The RC5B is a so called "Napfroehre" ( I don´t know this name in english language ) and was used for radar ? applications .
Data are here :
The preamp has an input...
Hello to all ,
I am 64 years old and I collect tubes and old tubed german studio equipment during the last 30 or 40 years . I used this old things to make life recordings together with a friend . In the last years my interest is more and more tube DIY .
Not tubes itself ;) , but amplifiers...