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1. Matched Pair Philips ECC83 / 12AX7A Valves / Vacuum Tubes (B)

   These are designated as 12AX7A. They mostly date from 1966/1967.

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2. Match Trio 12AX7A ECC83 Matsushita Mullard Holy Grail Angled Ring Getters Tested

   Fully tested on a TV7BU. See pics for test and condition details.

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3. Matched Pair Philips ECC83 / 12AX7A Valves / Vacuum Tubes (C)

   These are designated as 12AX7A. They mostly date from 1966/1967.

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4. 2 x Amplitrex Matched JJ Electronic ECC83S 12AX7 12AX7A Gold Pin Tubes

   Matched Pair. These are burned in and then matched for pairs on an Amplitrex AT-1000. JJ Tesla is a mainstay in the Vacuum Tube industry. Here are the virtues of JJ Tesla ECC83S tubes Try these in your McIntosh, ARC, Dynaco preamp or any device requiring a high quality 12AX7.

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5. 7025 (12AX7A) RCA USA LONG-PLATE D-GETTER "HOLY-GRAIL of 12AX7 TUBE" 118%/118%

   7025 = 12AX7A = ECC803S. serving as a desirable ECC83 = 12AX7A tube; representing the best of its kind. THE "PERFECT 1961 RCA REAL 7025 = 12AX7A/E83CC/ECC803S". AUTHENTIC 1960'S Amplitrex AT1000 TESTED RCA 7025 SINGLE TUBE.

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6. 12AX7A SYLVANIA NOS VALVE TUBE (LC26)

   12AX7A SYLVANIA (7025). GREY PLATE, RING GETTER.

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7. Nos Matsushita ITT ECC83 Japan Holy Grail 12AX7A audio Tube

   NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states "Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.

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8. NOS SYLVANIA 7025 (12AX7A) PLATINUM Matched Pair & Date/factory 15mm Plates

   The Sylvania 7025 from this era is known for a balanced, articulate sound with a slight lean toward clarity over warmth. These tubes test perfect and are perfectly matched. Tv7 minimum 32.

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