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12AU7
July 6, 2008 | Leave a Comment
The 12AU7 is a medium-mu twin triode miniature glass tube. In most circuits it is used as a class A amplifier per triode section. This tube has been, and still is, widely used in the preamplifier stages of high fidelity audio equipment, musical instrument amps, public address equipment, and broadcast equipment. It was used in so many different types of equipment that the vintage versions of this tube are still available without too much searching. Like their cousin, the 12AX7, the premium USA and West European brands are being hunted to extinction, but there are still bargains to be had in other vintage USA brands
![1 1953 New In Box Sylvania JHS 12AU7 ECC82tube 17mmBlackPlatesSlant ] Getter](http://thumbs.ebaystatic.com/pict/270939950018_0.jpg)
![1 1955 New In Box Sylvania 12AU7A ECC82 tube BlackRidgePlates Top ] Getter](http://thumbs.ebaystatic.com/pict/360444234483_0.jpg)
![1 1957 NewInBox Sylvania Philco 12AU7AECC82tube GrayRidgePlatesTop ] Getter](http://thumbs.ebaystatic.com/pict/270939957244_0.jpg)
