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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These German tubes are usually characterized by an impressive open “air” at the top end. But the product, the testing, the price and the service were all first rate. 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.

Browse Related Browse Related. Compared to my reference RCA clear top, I can live happily with both.

ECC82-RFT / E.Germany NOS

Retrieved from ” https: We are really impressed with these tubes. The 12AU7 and its variants are a miniature rtf B9A base medium-gain dual triode vacuum tube. Rftt to main content. Premium Audio Vacuum Tube. In other projects Wikimedia Commons. Superb tube and superb service as ever from Koray. These have short rounded gray plates similar to the typical 12AT7 plates which a Price is for 4 tubes in seemingly little used condition.


Use of special-quality versions outside of the purpose they were designed for may ec82 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 rct little attention to parameters of interest only for linear applications such as linearity of transfer characteristic, matching between the two sections, microphonyetc.

NOS for sure, no doubt. Ordered one day with express shipment option and delivered in Spain next day. From Wikipedia, the free encyclopedia.

RFT ECC Vintage Tubes & Tubes Sockets | eBay

It was widely rff, in special-quality versions such as E82CC and A, in pre-semiconductor digital computer circuitry. Construction is quite rare – with strengthen supports gray plates and single O-shaped halo getter.

See each listing for international shipping options and costs. This page was last edited on 13 Decemberat Construction of the right is quite rare – with dual stregthen supports, gray plates and single s Great valve for little marshall 1 dcc82 amplifer power stage,cheap and professionally packed and shipped! Price is for 2 NOS and tested valves. Pages using deprecated image syntax Articles containing potentially dated statements from All articles containing potentially dated statements.


The midrange is ruler flat, and the bass is tight and accur Just run in at about hours. Anonymous May 1, at This page is being bookmarked!

All kinds of matching available. Koray is great, I do not buy frequently and he still spends time answering my email in details.

This type of tubes are low noise and low microphonic preamp ones. Construction is with two supports, gray plates and single O-shaped halo getter. Anonymous December 4, at 8: Lovely clean sound, very quiet. Vacuum tubes Guitar amplification edc82. This tubes were tested on high end Russian military tube tester L by a qualified eng Price is for 2 NOS, new.

They happen to sound great in their use, but of course, that’s subjective and shouldn’t be of too much interest to you. Price is for 2 tubes in seemingly little used. This page was last rdt They are carefully matched from few pcs boxes, more details about testing procedure on my site.

RFT ECC82 Tubes

These tubes do have a unique sound of their own ecc2 heard elsewhere in ECC82 family tube type. Previous Page Next Page Home.

Get yours now before they’re all gone. Prices are still low with this kind of tubes.