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 have short rounded gray plates similar to the typical 12AT7 plates which a Views Read Edit View history.

Price is for 2 NOS and tested valves. By rfr this site, you agree to the Terms of Use and Privacy Policy. Retrieved from ” https: Just run in at about hours. Price is for 2 tubes in seemingly little used. Great valve for little marshall 1 watt amplifer power stage,cheap and professionally packed and shipped!

But the product, the testing, the price and the service were all first rate. Surprisingly this tube has a wide and deep stage! Boy, are they NOS, with shiny straight pins. Ordered one day with express shipment option and delivered in Spain next day.


They happen to sound great in their use, but of course, that’s subjective and shouldn’t be of too much interest to you. Number of bids and bid amounts may be slightly out of date.

RFT ECC Vintage Tubes & Tubes Sockets | eBay

These Ecv82 tubes are usually characterized by an impressive open “air” at the top end. Browse Related Browse Related.

Their sounding is great and is especially good for guitar amplifiers because From Wikipedia, the free encyclopedia. Construction is quite rare – with strengthen supports gray plates and single O-shaped halo getter.

This type of tubes are low noise and low microphonic preamp ones. It was widely used, in special-quality versions such as E82CC and A, in pre-semiconductor digital computer circuitry.

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

All kinds of matching available. Languages Polski Edit links. Pages using deprecated image syntax Articles containing potentially dated statements from All articles containing potentially dated statements. Prices are still low with this kind of tubes. Clear low noise tubes! Premium Audio Vacuum Tube. Koray is great, I do not buy frequently and he still spends time answering my email in details. Also shop in Also shop in.

Price is for 4 tubes in seemingly little used condition. Double triodes of the 12AU7 family have a center-tapped filament for use in either 6.

RFT ECC82 Tubes – Any Opinions?

This page is being bookmarked! This type of tubes are low noise and low microphonic preamp made.


See each listing for international shipping options and costs. Anonymous December 3, at 2: We are really impressed with these tubes. NOS for sure, no doubt. 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 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. They have nearly no noise and zero microphonics. These tubes do have a unique sound of their own not heard elsewhere in ECC82 family tube type.

RFT ECC82 Tubes

Anonymous May 1, at Skip to main content. Anonymous December 4, at 8: Construction is with two supports, gray plates and single O-shaped halo getter.

Price is for 2 NOS, new. Anonymous June 10, at 6: This is the best version of the series triodes designed specifically for sound amplification. Vacuum tubes Guitar amplification tubes.