Monday, March 17, 2014

Type 77 Pentode


Type 77 pentode in the Radiotron SE2A3 amp


Plug-in compatible with the 6C6 

Sunday, March 2, 2014

RC-12 Tube Manual

© 1934
All the tubes I am using in my Hi-Fi System were being manufactured by the time the RC-12 was published.

RCA phono from RC30
More info


But I also keep an RC30 copy!