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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Price is for 2 NOS, new. Great valve for little marshall 1 watt amplifer power stage,cheap and professionally packed and shipped!

Anonymous December 4, at 8: Retrieved from ” https: These German tubes are usually characterized by an impressive open “air” at the top end.

Ordered one day with rt shipment option and delivered in Spain next day.

Tube/valve ECC82 = 12AU7 RFT

Anonymous January 31, at 8: Price is for 4 tubes in seemingly little used condition. Just run in at about hours. It was widely used, in special-quality versions such as E82CC and A, in pre-semiconductor digital computer circuitry. Compared to my reference RCA clear top, I can live happily with both.


They have nearly no noise and zero microphonics. All kinds of matching available.

This page is being bookmarked! These have short rounded gray plates similar to the typical 12AT7 plates which a Price is for 2 NOS and tested valves. They are carefully matched from few pcs boxes, more details about testing procedure on my site.

NOS Tube Store: RFT ECC82 / 12AU7

NOS for sure, no doubt. Koray is great, I do not buy frequently and he still spends time answering my email in details. Previous Page Next Page Home. Get yours now before they’re all gone. Lovely clean sound, very quiet. Anonymous May 1, at Languages Polski Edit links.

These are quality tubes on budget and come screened for noise and microphonics!! But the product, the testing, the price and the service were all first rate. Views Read Edit View history. Construction is quite rare – with strengthen supports gray plates and single O-shaped halo getter. This tubes were tested on high end Russian military tube tester L by a qualified eng Pages using deprecated rfy syntax Articles containing potentially dated statements from All articles containing potentially dated statements.

They happen to sound great in their use, but of course, that’s subjective and shouldn’t be of too much interest to you. Koray is great to deal with, and obviously cares about his customers.

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From Wikipedia, the free encyclopedia. Vacuum tubes Guitar amplification tubes. Skip to main content. Premium Audio Vacuum Tube.

This type of tubes are low noise and low microphonic preamp ones. Boy, rcc82 they NOS, with shiny straight pins. The midrange is ruler flat, and the bass is tight and accur Also shop in Also shop in. Their sounding is great and is especially good for guitar amplifiers because The 12AU7 and its variants are a miniature nine-pin B9A base medium-gain dual triode vacuum tube.

RFT ECC82 Tubes – Any Opinions?

The tube is popular in hi-fi vacuum tube audio as a low-noise line amplifier, driver especially for tone stacksand phase-inverter in vacuum tube push—pull amplifier circuits. Use of special-quality versions outside of the purpose they were designed for may not be optimal; for example, a version for digital computers may be designed for long life without cathode poisoning when mostly switched to low-current mode in switching applications, but with little attention to parameters of interest only for linear applications such as linearity of transfer characteristic, matching between the two sections, microphonyetc.

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