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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ECC82-RFT / E.Germany NOS
Clear low noise tubes! In other projects Wikimedia Commons. This type of tubes are low noise and low microphonic preamp made. These German tubes are usually characterized by an impressive open “air” at the top end. Anonymous June 10, at 6: All kinds of matching available.
Koray is great to deal with, and obviously cares about his customers. Lovely fcc82 sound, very quiet.
Languages Polski Edit links. These are quality tubes on budget and come screened for noise and microphonics!! Skip to main content.
Browse Related Browse Related. This page was last edited on 13 Decemberat Price is for 4 tubes in rff little used condition.
Pages using deprecated image syntax Articles containing potentially dated statements from All fcc82 containing potentially dated statements. 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.
ECCRFT / y NOS – Preamp:doubletriodes Tubeampdoctor Store
Surprisingly this tube has a wide and deep stage! Price is for 2 tubes in seemingly little used. Boy, are they NOS, with shiny straight pins. Retrieved from ” https: This page was last updated: Ordered one day with express shipment option and delivered in Spain next day. They are carefully matched from few pcs boxes, more details about testing procedure on my site.
Construction is quite rare – with strengthen supports gray plates and single O-shaped halo getter.
The 12AU7 and its variants are a miniature nine-pin B9A base medium-gain dual triode vacuum tube. Their sounding is great and is especially good for guitar amplifiers because Price is rfr 2 NOS and tested valves. Compared to my reference RCA clear top, I can live happily with both. Get yours now before they’re all gone. Anonymous January 31, at 8: See each listing for international shipping options and costs.
They have nearly no noise and zero microphonics. This is the best version of the series triodes designed specifically for sound amplification. Anonymous May 1, at These tubes do have a unique sound of their own not heard elsewhere in ECC82 family tube type. This type of tubes are low noise and low microphonic preamp ones.
RFT ECC82 Tubes
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But the product, the testing, the price and the service rff all first rate. 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.
It was widely used, in special-quality versions such as E82CC and A, in pre-semiconductor digital computer circuitry.
12AU7 – Wikipedia
These have short rounded gray plates similar to the typical 12AT7 plates which a The midrange is ruler flat, and the bass is tight and accur Prices ecc882 still low with this kind of tubes. Views Read Edit View history. NOS for sure, no doubt. Premium Audio Vacuum Tube. Vacuum tubes Guitar amplification tubes. This tubes were tested on high end Russian military tube tester L by a qualified eng