McIntosh MC275 VI preamp tubes
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I should have known I couldn’t recall correctly. It was Ei in Yugoslavia that bought the Telefunken equipment according to this web page: 12AX7 Tube Gems - Tubes for Amps Which is kind of odd, in a tube nerd kind of way, because Ei was owned by Phillips who owned many brands like Mullard, Amperex, Siemens, Valvo, etc. but not Telefunken. Maybe Phillips cut Ei loose when demand for tubes began to drop. Anyway here’s a quote from the link above: "Ei was a tube factory that operated in Yugoslavia. Ei had close ties with Dutch Phillips. They even coded their tubes just like Phillips did. Ei also supplied OEM tubes to companies such as Telefunken when they shifted their focus away from vacuum tubes. In fact, Ei built their small tubes on tooling supplied by Telefunken. Now, although Ei got their tooling from Telefunken and tutelage from Phillips, their quality control tended to be minimal. So Ei screened their small signal tubes and labeled the good ones as Elites and sold at a higher price. They also offered gold plated pin version as Elite Gold." |
From another forum... Telefunken Elektroakustik is the company name, a partnership with JJ tubes. The Telefunken Elektroakustik Black Diamond tubes are essentially JJ tubes that have been cryogenically treated, silk screened in black with the Telefunken logo, tube designation, and sold in Telefunken packaging. They are definitely not Telefunken old stock tubes made in Germany. These tubes are being manufactured in Slovakia. |
