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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12AU7 REVIEW – RFT ECC82 – [email protected] – Tubes Asylum
Premium Audio Vacuum Tube. Construction is with two supports, gray plates and single O-shaped halo getter. This page was last updated: Great valve for little marshall 1 watt amplifer power stage,cheap and professionally packed and shipped! We are really impressed with these tubes. Languages Polski Edit links. Koray is great, I do not buy frequently and he still spends time answering my email in details. This page was last edited on 13 Decemberat From Wikipedia, the free encyclopedia.
NOS for sure, dft doubt. Vacuum tubes Guitar ec82 tubes. All kinds of matching available. Compared to my reference RCA clear top, I can live happily with both. They have nearly no noise and zero microphonics.
RFT ECC82 Tubes – Any Opinions? | Steve Hoffman Music Forums
The midrange is ruler flat, and the rgt is tight and accur This page is being bookmarked! Anonymous May 1, at Anonymous January 31, at 8: Clear low noise tubes!
These German tubes are usually characterized by an impressive open “air” at the top end. Koray is great to deal with, and obviously cares about his customers. Just run in at about hours. Construction is quite rare – with strengthen supports gray plates and single O-shaped halo getter.
Prices are still low with this kind of tubes. They are carefully matched from few pcs boxes, more details about testing procedure on my site.
They happen to sound great in their use, but of course, that’s subjective and shouldn’t be of too much interest to you.
These have short rounded gray plates similar to the scc82 12AT7 plates which a These tubes do have eecc82 unique sound of their own not heard elsewhere in ECC82 family tube type. See each listing for international shipping options and costs.
Surprisingly rtt tube has a wide and deep stage! This type of tubes are low noise and low microphonic preamp made. Get yours now before they’re all gone. Previous Page Next Page Home.
ECC82-RFT / E.Germany NOS
Anonymous June 10, at 6: Price is for 2 tubes in seemingly little used. Ordered one day with express shipment option and delivered in Spain next day.
Construction of the right is quite rare – with dual stregthen supports, gray plates and single s But the product, the testing, the price and the service were all first rate. This is the best version of the series triodes designed specifically for sound amplification. Superb tube and superb service as ever from Koray.
RFT ECC82 Tubes – Any Opinions?
Use of special-quality versions outside of ec8c2 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.
Lovely clean tft, very quiet. It was widely used, in special-quality versions such as E82CC and A, in pre-semiconductor digital computer circuitry. This tubes were tested on high end Russian military tube tester L by a qualified eng Price is for 2 NOS, new.