The 6V6 is a beam-power tetrode, introduced as the 6V6G by Ken-Rad Tube & Lamp Corporation in late 1936,[1] it is still in use in audio applications, especially electric guitar amplifiers. Following the introduction in July 1936 of the 6L6 , the potential of the scaled down version that became the 6V6 was soon realized. The lower-powered 6V6 was better suited for average home use, and became common in the audio output stages of "farmhouse" table-top radios, where power pentodes such as the 6F6 had previously been used. The 6V6 required less heater power and produced less distortion than the 6F6, while yielding higher output in both single-ended and push-pull configurations. Although the 6V6 was originaly designed especially for use in automobile radios,[2] the clip-in Loctal base 7C5,[3] from early 1939, or the lower heater current 12V6GT, both with the identical characteristics to the 6V6, but with the smaller T-9 glass envelope, soon became the tubes of choice for many automotive radios manufacturers. Additionally, the 6V6 had applications the portable radio market.


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