C3M Pentode NOS Siemens Made in Germany
This tube famed as "perhaps the best small signal pentodes ever made..." Built exclusively for the German post, these are special quality - 10,000 hour pentodes for use in AF and RF circuits. They were used in repeater amplifiers for long distance telephony in the 1960's. The lowest noise and lowest microphonics plus very high amplification was accomplished with this ULTIMATE preamp tube.
MADE IN GERMANY
