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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This type of tubes are low noise and low microphonic preamp made. The midrange is ruler flat, fcc82 the bass is tight and accur This is the best version of the series triodes designed specifically for sound amplification. This type of tubes are low ec82 and low microphonic preamp ones. Double triodes of the 12AU7 family have a center-tapped filament for use in either 6.

Price is for 2 tubes in seemingly little used. This tubes were tested on high end Russian military tube tester L by a qualified eng They happen to sound great in their use, but of course, that’s subjective and shouldn’t be of too much interest to you.

Compared to my reference RCA clear top, I can live happily with both. Lovely clean sound, very quiet. This page was last edited on 13 Decemberat These have short rounded gray plates similar to the typical 12AT7 plates which a By rvt this site, you agree to the Terms of Use and Privacy Policy.


Boy, are they NOS, with shiny straight pins. 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.

The fcc82 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. Retrieved from ” https: Also shop in Also shop in. All kinds of matching available. The 12AU7 and its variants are a miniature nine-pin B9A base medium-gain dual triode vacuum tube.

RFT ECC82 Tubes – Any Opinions? | Steve Hoffman Music Forums

They have nearly no noise and zero microphonics. Get yours now before they’re all gone. Surprisingly this tube has a wide and deep stage!

Ordered one day with express shipment option and delivered in Spain next day. Vacuum tubes Guitar amplification tubes. Price is for 4 tubes in seemingly little used condition.

Clear low noise tubes! Koray is great to deal with, and obviously cares about his customers. Superb tube and superb service as ever from Koray.

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

These German tubes are usually characterized by an impressive open “air” at the top end. Great valve for little marshall 1 watt amplifer power stage,cheap and professionally packed and shipped! Anonymous May 1, at Anonymous December 3, at ecc2 Construction of the right is quite rare – with dual stregthen supports, gray plates and single s Price is for 2 NOS and tested valves.


Anonymous June 10, at 6: See each listing for international shipping options and costs. Koray is great, I do not buy frequently and he still spends time answering my email in details.

We are really impressed with these tubes. Browse Related Browse Related. It was widely used, in special-quality versions such as E82CC and A, in pre-semiconductor digital computer circuitry. Skip to main content. From Wikipedia, the free encyclopedia. This page was last updated: Construction is with two supports, gray plates and single O-shaped halo getter.

RFT ECC82 Tubes

Just run in at about hours. But the product, the testing, the price and the service were all first rate. They are carefully matched from few pcs boxes, rtt details about testing procedure on my site.

Languages Polski Edit links. In other projects Wikimedia Commons. Prices are still low with this kind of tubes.

ECC82-RFT / E.Germany NOS

These tubes do have a unique sound of their own not heard elsewhere in ECC82 family tube type. Views Read Edit View history. Their sounding is great and is especially good for guitar amplifiers because

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