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1. Matched Pair Sylvania 12AT7 Dual Triode Guitar Amp. Audio Vacuum Tube Valve- Ban

   Model 12AT7. 12AXY, 12AT7, and 12AU7, can still be confusing to differentiate and understand which is used for what purpose and whether one can be substituted for another. Below we will try to clarify the most common differences between the 12AXY, 12AT7, and 12AU7, and in what circumstances they can be interchangeable.

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2. Brimar England 12AT7/ECC81 Dual Triode Guitar Amp. Audio Vacuum Tube Valve- Bang

   Model 12AT7. 12AXY, 12AT7, and 12AU7, can still be confusing to differentiate and understand which is used for what purpose and whether one can be substituted for another. Below we will try to clarify the most common differences between the 12AXY, 12AT7, and 12AU7, and in what circumstances they can be interchangeable.

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3. BRIMAR CV4024 ECC81 12AT7WA Made Uk Black Plates O Getter Valve (B736A)

   BRIMAR ECC81. Valve (B745) O getter black rib plates cod 4B2/1565 (1962) Tests strong at 98/98 on BK600 super strong New 89/89 up No shorts gas or grid emissions

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4. NICE Telefunken 12AT7 ECC81 Audio Tube Tested GOOD 83/79 min 55

   1940, 40s, 1950, 50s, 1960, 60s, 1970, 70s. Tube(s) shown in pictures will be the exact tube(s) you will receive.

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5. 1 PAIR Matsushita Tube ECC81 Nos 12AT7 Slanting Getter Mullard Tool Strong New

   Pair Matsushita / Mullard 12AT7 ECC81. Made by Matsushita Japan using Mullard Tooling. In 45 Degree Angle of Getter.

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6. M8162 ECC81 12AT7 Mullard Mottled Glass New Old Stock Valve Tube Sep22

   M8162 ECC81 12AT7 Mullard. Valve Tube.

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7. Channel Master 12AT7/ECC81 Dual Triode Guitar Amp. Audio Vacuum Tube Valve- Bang

   Model 12AT7. 12AXY, 12AT7, and 12AU7, can still be confusing to differentiate and understand which is used for what purpose and whether one can be substituted for another. Below we will try to clarify the most common differences between the 12AXY, 12AT7, and 12AU7, and in what circumstances they can be interchangeable.

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8. Brimar ECC81 12AT7 Black Plate Valve Tube Used Tested 1966 (KA51)

   4000/4000 umhos gm

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