Collection: KT63, 6F6, ARP17, CV1186, CV1911, NR85, OUTPUT VALVE, OCTAL

The 6F6 is a general-purpose audio output pentode intended for domestic and car radios. Its output is similar to that of the 6V6 but its higher input allows it to be driven directly from the detector output, thus saving one stage of audio amplification - a boon for car radio design where space is constrained.

In Push-Pull Class A audio applications, a 10.5 W with 3% distortion Is achievable.

The KT63 is a beam tetrode and was first marketed in 1939.

The  6F6 was first marketed in 1936.

 
KT63