The 12AU7 and its variants are miniature nine-pin (B9A base) medium-gain dual- triode vacuum tubes. It belongs to a large family of dual-triode vacuum tubes which share the same pinout (RETMA 9A). 12AU7 is also known in Europe under its …

Tube Depot carries a selection of 12AU7 / ECC82 / CV4003 / 5814A Pre Amp Vacuum Tubes. New & NOS tubes from Tung-Sol, Electro-Harmonix, JJ & more!

One of the most commonly found driver tubes found in push-pull vacuum tube audio power amplifiers is the 12AU7 preamp tube. As well, this tube's low gain make it a great choice for tube preamps in hi-fi stereo systems. Other 12AU7 tube equivalent part numbers are ECC82, 5814, 6189, and CV4003... More Details.

Tube 12AU7A or Röhre 12AU7A ID5285, Double Triode, Noval, 9 pin miniature (USA pico-9) B9A and Universal shown. Radio tubes are valves.

The Electro-Harmonix 12AU7A / ECC82 preamp tube is a brand new vacuum tube that is made in Russia. It is a premium quality 12AU7 tube built to match the performance of the military-industrial original GE 6189 tube.

Mar 14, 2009 · Philips / Amperex/ Valvo ECC186 / 7316 : The Philips 7316 I think is the best all round 12AU7- superb natural refined sound, balanced, detailed, dynamic, effortless transparent bass, while not too forward. There are three versions of the 7316, and by reputation they are all good. Getting expensive.

12AU7A RCA Cleartop (side getter) unlabeled or organ brands, SPECIAL PRICE, SINGLES AND MATCHED PAIRS! New Old Stock White Box. More of these fine tubes just in stock!

A medium-gain dual/single triode with the lowest gain factor amongst all commonly used preamplifier tubes, the 12AU7 has several names for identical variants. 12AU7 is used for this lowest medium-gain preamp tube in the US with its European variant known as ECC82.

The 1960s Sylvania 12AU7A tubes in this precisely matched pair were made in the USA and labeled for other companies. They have halo getters and long gray plates with copper grid posts. Both tubes test as new with very low noise.

12au7/12au7a The only difference between the 12AU7 and the 12AU7A is the "A" version can be used in series string filament circuits due to it's controlled warm-up cathode. Otherwise, there is no difference.