12AT7
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.
 12AT7 6189W VINTAGE ELECTRONIS NOS TUBES JAN SYLVANIA  US $19.95
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 SYLVANIA 12AT7 ECC81 11mm BLACK PLATE O GETTER MATCH PR US $69.80
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 2x ECC81 12AT7 SYLVANIA Tube Röhre Lampe Valvola NOS US $99.99
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 2 Matched Tubes ECC81 12AT7 SIEMENS Tested US $12.00
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 2 Used Matched Tubes ECC81 12AT7 SIEMENS Tested US $6.00
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 1 Tube 12AT7 ECC81 BRIMAR Square Getter Tested US $5.00
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 2 Tubes ECC81 12AT7 RFT O Getter Germany Tested US $9.00
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 RCA 12AT7 11mm PLATE O GETTER LOGO WORN OFF USA USED US $17.90
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 12AT7 VINTAGE ELECTRONIS NOS TUBES RCA GRY BOX PLT US $14.95
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 GE 12AT7 RU 188 5 11mm PLATE O GETTER BALANCE USA MADE US $24.90
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 Matched Pair Tung Sol 12AT7 Tubes US $35.00
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 Telefunken TWO TUBES 12AT7 ECC81 Fisher logo US $90.00
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 NEW JJ Tesla 12AT7 ECC81 Pre Amp Tube US $9.97
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 2 x ECC81 12AT7 NOS RFT PREAMP TWIN TRIODE VALVES TUBES US $22.00
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 4 x ECC81 12AT7 NOS RFT PREAMP TWIN TRIODE VALVES TUBES US $45.00
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 Electro Harmonix Tubes 12AT7 ECC81 EH NEW IN BOX US $9.50
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 Vintage Telefunken 12AT7 ECC81 Stereo Tube US $24.99
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 GE JG 12AT7WA 6201 12AT7 Amp Vacuum Tube 3 MICA SROD58 US $39.95
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 VINTAGE SLYVANIA 12AT7 QTY 3 TUBES US $9.99
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 1pc ShuGuang Electron Vacuum Tubes 12AT7 ECC81 US $10.50
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 GE TWO TUBES 5965 12AT7 ECC81 with GE Boxes US $25.00
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![GE JG 12AT7 6201 Amp Vacuum Tube MATCHED SQ ]GETR 1956](http://thumbs.ebaystatic.com/pict/110579845394_0.jpg) GE JG 12AT7 6201 Amp Vacuum Tube MATCHED SQ ]GETR 1956 US $27.95
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 2 matched Telefunken 12AT7 ECC81 tubes US $60.95
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 SYLVANIA WU 12AT7 6201 Amp Vacuum Tube BLACK PLATE US $11.88
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 SYLVANIA JAN FAA 12AT7 6201 Amp Vacuum Tube BLACK PLATE US $13.88
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 TUNG SOL 12AV7 12AT7 Amp Vacuum Tube MATCHED SET US $27.95
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 RCA 5965 12AV7 12AT7 Amp Vacuum Tube BLACK PLATE 3 MICA US $47.95
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 Radio Tubes 1 Telefunken 12AT7 ECC81 Tube US $75.00
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 GE 12AV7 12AT7 Amp Vacuum Tube MATCHED QUAD 3 PLATES US $29.95
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 Chinese 12AT7 tube valve quad set US $31.89
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 CV4024 ECC81 12AT7 tube valve Brimar or Mullard US $27.33
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 Brimar CV4020 12AT7 valve tube 1 pair US $182.20
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 2x 12AT7 ECC81 IC Tube Röhre Lampe TSF Valvola NOS US $99.99
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 2x 12AT7 ECC81 RCA Tube Lampe TSF Valvola Röhre NOS US $99.99
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 Tung Sol 12at7 12 at7WANOS New Old Stock US $34.99 |
 2 matched 1950s Tung Sol 12AT7 6201ECC81 tubes US $31.95
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 Superb 12AT7 ECC81 tube “Square black plates” NOS US $15.00
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 GE 6201 JAN 12AT7WA 12AT7 Amp Vacuum Tube S ROD 1965 US $14.88
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 GE 6201 JAN 12AT7WA 12AT7 Amp Vacuum Tube S ROD MATCH65 US $29.95
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 GE 6201 12AT7WA 12AT7 Amp Vacuum Tube MATCH SET 5 STAR US $39.95
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 Vintage Pair NOS General Electric 12AT7 Tubes REVERB US $25.00
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 GE 6201 JAN 12AT7WC 12AT7 12AT7WA Amp Vacuum Tube S ROD US $12.88
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 2 matched Telefunken United 12AT7 ECC81 tubes US $64.95
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 Very strong 12AT7 ECC81 tube “Square black plates” US $12.00
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 2New Telefunken ECC81NOS12AT76201CV4024CV455A2900 US $2.25
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 GE 6201 12AT7WA 12AT7 Amp Vacuum Tube 5 STARHIQUALITY US $16.95
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 GE 6201 12AT7 ECC81 Guitar Preamp Amp Vacuum Tube US $12.88
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 GE 12AT7 ECC81 Guitar Preamp Amp Vacuum Tube US $11.88
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 One 12at7 tube US $2.99
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 GE JAN CKR 12AT7 ECC81 Guitar Amp Vacuum Tube RARE 1950 US $19.95
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![GE 12AT7 ECC81 Guitar Amp Vacuum Tube RARE 1956 ] Get](http://thumbs.ebaystatic.com/pict/110580002338_0.jpg) GE 12AT7 ECC81 Guitar Amp Vacuum Tube RARE 1956 ] Get US $14.95
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 2 New Marshall 12AX7 ECC83 with 2 FREE GE 12AT7 US $12.88
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