The 12AU7 and its variants are a miniature nine-pin (B9A base) medium-gain dual triode vacuum tube. 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 Mullard–Philips tube designation ECC RFT “thin-plate” ECC82 variant ( left), RCA 12AU7A variant (right), Hitachi. 12AU7 = ECC82 RFT Super quality 12AU7 made by the German factory RFT. Excellent performance in both hi-fi and musical instrument applications. The German made RFT 12AU7 is considered to be one of the better sounding European tubes you can find. It ranks up there with the RCA 12AU7 clear top.

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Boy, are they NOS, with shiny straight pins.

fcc82 They happen to sound great in their use, but of course, that’s subjective and shouldn’t be of too much interest to you. But the product, the testing, the price and the service were all first rate.


12AU7 REVIEW – RFT ECC82 – [email protected] – Tubes Asylum

Koray is great to deal with, and obviously cares about his customers. This page is being bookmarked!

Surprisingly this tube has a wide and deep stage! Compared to my reference RCA clear top, I can live happily with both.

Tube/valve ECC82 = 12AU7 RFT

Great valve for little marshall 1 watt amplifer power stage,cheap and professionally packed and shipped! Superb tube and superb service as ever from Koray.

Ordered one day with express shipment option and delivered in Spain next day. Clear low noise tubes!

Tube/valve ECC82 = 12AU7 RFT

Prices are still low with this kind of tubes. NOS for sure, no doubt.

Koray is great, I do not buy frequently and he still spends time answering my email in details. These are quality tubes on budget and come screened for noise and microphonics!!

All kinds of matching available.

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