12AT7

July 6, 2008 | Leave a Comment

The 12AT7 is a high-frequency twin triode in a small 9-pin miniature glass package. This tube has a mu factor of 60, as compared to the higher gain 12AX7 with a factor of 100, and the 12AU7, with a mu of only 20. As you can see, it shares similar pin connections with it's cousins, but these tubes are not interchangeable. The 12AT7 is found in many high fidelity applications, as each triode section in normal use operates as a class A amplifier. They also turn up in line and microphone preamplifiers, musical instrument amps, and vacuum tube equipped recording equipment. By their design, they are inherently low noise, making them a good choice for these applications.

 




Date Pair Philips Amperex Miniwatt Dario E180CC 12AT7 PINCHED WAIST Tubes 85
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Date Pair 57 Philips Amperex Miniwatt E180CC 7062 12AT7 PINCHED Tubes 90
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Vintage Electronic Vacuum Tube 2pc Lot GE 12AT7 6679 EU 188 5  6201 JG 12AT7
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NOS M Pair2 Philips Amperex Miniwatt E180CC 7062 12AT7 D Foil Getter Tubes
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Date Pair 1960 Philips Miniwatt Dario E180CC 7062 12AT7 D Foil Getter Tubes 93
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NOS Date M Pair 1960 Philips Miniwatt Dario E180CC 7062 12AT7 D Foil Tubes
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ONE 12AT7 OR 12AT7WA OR 6201 United Vacuum Tube Hickok 539c TESTED
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NOS Date M Pair 1960 Philips Amperex Miniwatt E180CC 7062 12AT7 D Foil Tubes
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Date M Pair 1958 Philips Amperex E180CC 7062 12AT7 PINCHED WAIST Tubes 85
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Date M Pair 1958 Philips Amperex E180CC 7062 12AT7 PINCHED WAIST Tubes 93
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NOS Date M Pair Philips Amperex Miniwatt Dario E180CC 12AT7 PINCHED WAIST Tubes
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NOS M Pair Philips Amperex Miniwatt Dario E180CC 7062 12AT7 D Foil Getr Tubes
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M Pair Philips Amperex Miniwatt Dario E180CC 7062 12AT7 PINCHED WAIST Tubes 90
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M Pair Philips Amperex Miniwatt Dario E180CC 7062 12AT7 D Foil Getter Tubes 90
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TWO 12AT7 PREAMP TUBES TEST GOOD MB1007056
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12AT7WA ECC81 NOS Black plate RCA COMMAND Made in the USA vacuum tubes
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RADIO TV VACUUM TUBES LOT INCLUDES 71A 6L6WGB 12AT7
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1960s GE 12AT7 ECC81 Vtg Guitar Amp Twin Triode Vacuum Tube OEM Part NOS NIB
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12AT7 ECC81 AUDIO GUITAR AMPLIFIER HAM RADIO TV tube lot of 4
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MULLARD 12AT7 ECC81 Mathed pair
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Strong  Balanced Pair of Sonotone Telefunken Brimar 12at7 Ecc81 Vacuum Tubes
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1 GE 12AT7WB 6201 Electronic Vacuum Tube in Standard Box NOS
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10pcs 9Pin Ceramic Vacuum Tube Socket Gold Valve Base for 12AX7 12AU7 12AT7
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6201 USN 12AT7WB 12AT7 Vacuum Tube GE USA 1962
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2 RCA 12AT7 ECC81 Vacuum Tubes 3700 3900 3400 3500 mhos 5 9 69 47 49 mA
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2 Raytheon 12AT7 WA ECC801S D Getter 3 Mica Vacuum Tubes 4610 5180 4910 4425
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3 Vintage Sylvania 12AT7 ECC81 Black Pl Vacuum Tubes 3750 3700 4090 3790 4210 37
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Matched Pair Raytheon 12AT7 WA ECC801S 3 Mica Black Plts D Getter Vacuum Tubes
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4pc Shuguang 12AT7 ECC81 Matched Quad vacuum tube tested by AT1000
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6 PIECES  NOS BLACK PLATE GOLD PIN SYLVANIA 6201 TUBES  RARE COPPER POST 12AT7
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pair ECC81 12AT7 SIEMENS NOS
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1x RFT ECC81 RF Double Triode VHF  Audio Amp Valve Tube 12AT7
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2 1957 GE JG 12AT7 WA 6201 TESTASNEW Vtg Stereo Guitar Amp Vacuum Tube OEM Part
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12AT7 tubes x 4
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ECC81  12AT7 from BEL Exact Copy Of Mullard Emission  114
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HALTRON 12AT7 ECC81 VACUUM TUBE HICKOK TV 7D U TEST
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TELEFUNKEN 12AT7 ECC81 VACUUM TUBE MICROTRACER TEST
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2PCS B9A Golden 9Pin Ceramic tube sockets Chassis Mount For 12AT7 EL84 6BM8 6922
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 4 RINGS SILICONE TUBES ECC88 ECC83 12AX7 12AU7 12AT7 12BH7 ANTI RUMBLE
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SYLVANIA 12AT7 ECC81 GREY RIB PLATE 3 MICA SQR GETR TEST NOS VINTAGE 1960
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2 NOS RAPHONE made by Telefunken ECC81 12AT7 Vacuum Tubes SAME DATE CODE
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A PAIR OF 12AT7 ELECTRONIC ENTERPRISES ENGLAND IDENTICAL TUBES
A PAIR OF 12AT7 ELECTRONIC ENTERPRISES ENGLAND IDENTICAL TUBES
$54.95
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NEW JJ TESLA 12AT7 ECC81 Preamp Tube Guitar Amplifier
NEW JJ TESLA 12AT7 ECC81 Preamp Tube Guitar Amplifier
$16.55
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LOT OF 9 12AT7 Tubes 4 are TELEFUNKEN ALL TESTED GOOD
LOT OF 9 12AT7 Tubes 4 are TELEFUNKEN ALL TESTED GOOD
$89.95
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Westinghouse 12AT7 Made in Germany 1987
Westinghouse 12AT7 Made in Germany 1987
$10.00
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GE 12AT7WA 12AT7 ECC81 Mil Spec Tubes Matched Pair NOS Tested
GE 12AT7WA 12AT7 ECC81 Mil Spec Tubes Matched Pair NOS Tested
$36.00
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4pc 9pin Ceramic Tube Socket B9A Skirted Base For ECC83 12AT7 EL84 Valve Amp PCB
4pc 9pin Ceramic Tube Socket B9A Skirted Base For ECC83 12AT7 EL84 Valve Amp PCB
$6.50
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Sylvania 12AT7 rare US Air Force issue NOS
Sylvania 12AT7 rare US Air Force issue NOS
$9.00
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