Double triode

Double triode
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Showing 1 - 60 of 353 items
  • $US5.00

    Radio Corporation of America

     Fine NOS dissimilar double triode miniature glass tubes manufactured in the United States by renowned RCA. These 9-pin tubes have one plate black and the other plate gray, and top disc getters. They are designed as vertical deflection oscillator and vertical deflection amplifier for TV apparatus. They are printed in red new style RCA and coded NR; they...  Fine NOS dissimilar double triode miniature glass tubes...

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  • $US7.00

    Various manufacturer

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  • $US4.00

    Various manufacturer

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  • $US7.00

    Various manufacturer

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  • $US8.00

    Various manufacturer

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  • $US7.00

    Various manufacturer

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  • $US4.00

    Joint Army Navy US (JAN)
    Various manufacturer

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  • $US8.00

    Heintz & Kaufman

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  • $US4.00

    RCA vacuum tubes
    Joint Army Navy US (JAN)

    Top quality octal-based twin triode tubes manufactured for the United States military by world renowned RCA. Designed for converter and audio applications these tubes, with bottom D-getters and black plates, are glass-etched 12AH7GT, some are printed on base in white JAN CRC 12AH7-GT MADE IN U.S.A. with old style RCA logo, and some are also printed VT-207. Top quality octal-based twin triode tubes manufactured...

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  • $US5.00

    Ken-Rad
    Joint Army Navy US (JAN)

    Tough Mil. Spec. twin triode tubes manufactured in the United States by Ken-Rad. Top quality glass tubes designed for audio and converter applications, these tubes are glass-etched 12AH7GT, and bases are printed in white either KEN-RAD VT-207 MADE IN U.S.A. or JAN-CKR-12AH7GT VT-207 KEN-RED U.S.A. Tough Mil. Spec. twin triode tubes manufactured in the...

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  • $US6.00

    RCA vacuum tubes

    Pristine glass octal-based twin triodes manufactured in the United States by renowned RCA. These fine tubes, designed for converter and audio applications, have black plates and bottom D-getters. They are glass-etched 12AH7GT, and printed on black base RCA ELECTRON TUBE RADIOTRON MADE IN U.S.A. with old style RCA logo. For NOS tubes, boxes are old style... Pristine glass octal-based twin triodes manufactured in...

    In Stock
  • $US13.00

    Various manufacturer

    Fine double triode 9 pin amplifier tubes made by various manufacturers. These miniature glass tubes, either black or gray plates, and top getters, come with different manufacturers markings, and may be glass etched with dot codes. They are the best sounding tubes for your amplifier gear, at a very reasonable cost. Fine double triode 9 pin amplifier tubes made by various...

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  • $US19.00

    Marconi

    Top quality audio preamplifier tubes manufactured in Canada by renowned Marconi. These 9 pin double triodes have short gray plates and top D getters. They are printed in white with Marconi logo, MARCONI RADIOTRON MADE IN CANADA, typically coded MA, and glass-etched 12AT7. Top quality audio preamplifier tubes manufactured in...

    In Stock
  • $US19.00

    Sylvania

    Fine audio double triodes manufactured in the United States or Canada by renowned Sylvania. These miniature glass 9 pin amplifier tubes come with short black or gray plates, top getters and stout internal supports, minimising microphony. They are printed in green or in yellow with Sylvania logo, SYLVANIA MADE IN U.S.A. or CANADA, and some are glass etched... Fine audio double triodes manufactured in the United...

    In Stock
  • $US19.00

    Westinghouse

    Quality double triode amplifier tubes manufactured in the United States or Canada by renowned Westinghouse. These 9 pin miniature glass tubes come with short black plates, solid internal supports, and top getters. They are printed in white or in yellow with Westinghouse logo, WESTINGHOUSE ELECTRONIC TUBE 12AT7 with various production codes. They are also... Quality double triode amplifier tubes manufactured in the...

    In Stock
  • $US11.00

    Sovtek

    From 100 cases, miniature glass double triode tubes at rock-bottom price, manufactured in Russia by Sovtek. These New Bulk 9 pin amplifier tubes have ribbed gray plates, internal copper support posts and a third top mica spacer with D getter, and are marked 12AT7. From 100 cases, miniature glass double triode tubes at...

    In Stock
  • $US49.00

    Tung-Sol

    Fine miniature glass 9 pin audio tubes manufactured in the United States by renowned Tung-Sol. These double triode tubes come with gray plates, two thick mica spacers, four internal copper posts, and top halo getters. They are printed in white TUNG-SOL MADE IN U.S.A. and are glass-etched 12AT7.   Fine miniature glass 9 pin audio tubes manufactured in...

    In Stock
  • $US17.00

    General Electric (GE)

    Quality double triode tubes manufactured in the United States by renowned General Electric. These fine 9 pin miniature glass tubes, suitable for audio or RF amplification, oscillator or mixer service, come with short gray plates and top halo getters. They are printed in white with GE logo, ELECTRONIC TUBE 12AT7 / ECC81, and coded SK 188-5, indicating... Quality double triode tubes manufactured in the United...

    In Stock
  • $US24.00

    Radio Corporation of America

    Quality 9 pin double triode preamp tubes manufactured in the United States by RCA. These fine miniature glass tubes have short black plates, two thick mica spacers, four rigid copper posts and top D getters. They are printed in white with old style RCA logo, RCA ELECTRON TUBE MADE IN U.S.A. with typical date codes 1950's and 1960's. They are also... Quality 9 pin double triode preamp tubes manufactured in...

    Product available with different options
  • $US19.00

    General Electric

    Fine preamp double triode 9 pin tubes manufactured in the United States by renowned General Electric. These miniature glass tubes come with short gray plates, four robust copper internal posts, and top D getters. They are printed in white with GE logo, ELECTRONIC TUBE MADE IN U.S.A. code 188 indicating Owensboro Kentucky plant production, and 1950's date... Fine preamp double triode 9 pin tubes manufactured in the...

    In Stock
  • $US37.00

    Radio Corporation of America

    Top quality miniature glass amplifier tubes manufactured in the United States or Canada by RCA. These 9 pin double triode tubes come with short gray plates, stout internal supports, and top getters. They are printed in red or white RCA ELECTRON TUBE and are glass etched 12AT7 U.S.A. ou CANADA. Top quality miniature glass amplifier tubes manufactured...

    In Stock
  • $US19.00

    Tungsram

     Great sounding double triode amplifier tubes at reasonable cost, manufactured in Yugoslavia by Tungsram. These 9 pin miniature glass tubes come with short gray plates, two thick mica spacers, and top D getters. They are printed in yellow TUNGSRAM 12AT7.  Great sounding double triode amplifier tubes at...

    In Stock
  • $US32.00

    Raytheon
    Joint Army Navy US (JAN)

    Fine mil. spec. audio double triode tubes manufactured in the United States for the armed forces by Raytheon. These 9 pin miniature glass tubes with gray plates and top D getters are printed in red RAYTHEON JRP-12AT7 MADE IN U.S.A. MADE FOR CANADIAN GENERAL ELECTRIC CO. LTD. Fine mil. spec. audio double triode tubes manufactured in...

    In Stock
  • $US23.00

    Various manufacturer

     Fine Mil. Spec. double triode audio tubes manufactured for the United States military by various makers. These miniature glass 9 pin amplifier tubes come with various markings and many are glass etched with U.S.A. production marks. Boxes are standard beige military with different codes.  Fine Mil. Spec. double triode audio tubes manufactured...

    In Stock
  • $US44.00

    Raytheon
    Joint Army Navy US (JAN)

     Top quality mil. spec. double triode audio tubes manufactured in the US by renowned Raytheon. These solid 9 pin glass tubes have 3 mica spacers, black plates, and top round getters. They are printed in red with Raytheon logo, JRP-12AT7WA MADE IN U.S.A. and coded typically 36 280 64-19, indicating 1964 production.  Top quality mil. spec. double triode audio tubes...

    In Stock
  • $US15.00

    Philips
    Joint Army Navy US (JAN)

    Mil. Spec. 1987 production quality miniature glass tubes manufactured in the United States by Philips. Rugged double triode 9 pin tubes with top halo getters, gray plates and 4 stout copper posts. They are printed in blue JAN 12AT7WC PHILIPS ECG U.S.A. and coded 34167 8739 AHM. White military boxes are NATO coded 5960-00-179-4446 FSCM 82219 MFR/PN JAN... Mil. Spec. 1987 production quality miniature glass tubes...

    In Stock
  • $US26.00

    Sylvania
    Joint Army Navy US (JAN)

    Fine mil. spec. preamp double triodes manufactured in the United States by renowned Sylvania. These miniature glass 9 pin tubes have small ribbed black plates, thick mica spacers, four stout copper posts and top halo getters. They are printed in green JAN 12AT7WC SYLVANIA U.S.A. and coded typically 34167 ADS with late 1970's early 1980's date codes. Fine mil. spec. preamp double triodes manufactured in the...

    In Stock
  • $US23.00

    Marconi

    Top quality miniature glass amplifier tubes manufactured in the United States or Canada by renowned Marconi. These 9 pin double triode tubes come with gray plates and top getters. They are rpinted in red MARCONI RADIOTRON MADE IN U.S.A. or CANADA, with various two letter codes. Top quality miniature glass amplifier tubes manufactured...

    In Stock
  • $US23.00

    Tung-Sol

    Tough miniature glass preamp tubes, 1960's or 1970's production, manufactured in the United States by renowned Tung-Sol. These reliable 9 pin double triode amplifier tubes come with gray robbed plates, thick mica spacers, and top getters. They are printed in white TUNG-SOL MADE IN U.S.A. with 322 plus other digits codes. Tough miniature glass preamp tubes, 1960's or 1970's...

    In Stock
  • $US12.00

    International

    Best value miniature glass double triode preamp tubes manufactured by International in Yugoslavia. These 9 pin tubes come with gray plates, top round getters, and four stout copper posts. They are printed in white 12AU7/ECC82 IC YUGOSLAVIA, and are boxed in standard blue boxes marked INTERNATIONAL C SERVICEMASTER ELECTRON TUBE 12AU7 ECC82. Best value miniature glass double triode preamp tubes...

    In Stock
  • $US41.00

    Radio Corporation of America

    Fine miniature glass double triodes manufactured by RCA in the United States. These 9 pin audio amplifier tubes have long ribbed black plates, top D getters, and two thick mica spacers. They are printed in white with RCA logo, RCA ELECTRON TUBE MADE IN U.S.A. and glass-etched 12AU7. Fine miniature glass double triodes manufactured by RCA...

    In Stock
  • $US32.00

    Raytheon

    Best quality miniature glass preamp tubes manufactured in the United States by Raytheon. These tough 9 pin double triode amplifier tubes come with ribbed black plates, and top D getters. They are printed in yellow RAYTHEON MADE IN U.S.A. and coded 280 plus several other digits. They are also glass etched 12AU7. Best quality miniature glass preamp tubes manufactured in...

    Product available with different options
  • $US31.00

    Westinghouse

    Fine double triode preamp tubes manufactured in the United States or Canada by Westinghouse. These 9 pin miniature glass tubes come with long black plates, thick mica spacers, and top getters. They are printed in white WESTINGHOUSE ELECTRONIC TUBE with several various code letters. They are also glass etched 12AU7A MADE IN U.S.A. or CANADA. Fine double triode preamp tubes manufactured in the...

    In Stock
  • $US29.00

    Sylvania

    Top quality mil. spec. preamp tubes manufactured in the United States for the armed forces by Sylvania. These fine miniature glass 9 pin double triodes have long black ribbed plates, and top D getters. They are printed in green JHS 12AU7 MADE IN U.S.A. SYLVANIA, printed in red MADE FOR CANADIAN GENERAL ELECTRIC CO. LTD. and coded typically F3 317. They... Top quality mil. spec. preamp tubes manufactured in the...

    In Stock
  • $US15.00

    Various manufacturer

    Fine 9 pin miniature glass amplifier tubes from North America by various manufacturers such as Philips. Rogers, Admiral. These double triode audio amplifier tubes come with black ribbed plates, and top round or square getters. Fine 9 pin miniature glass amplifier tubes from North...

    In Stock
  • $US13.00

    Various manufacturer

    Selected double triode audio amplifier tubes, from various countries by various manufacturers such as Philips, Rogers, Admiral, RTT, Zaerix. These 9 pin miniature glass tubes come with gray plates and top halo getters, with various markings in standard manufacturer's boxes. Selected double triode audio amplifier tubes, from...

    In Stock
  • $US23.00

    RCA vacuum tubes

    Top quality audio double triodes manufactured in the United States by renowned RCA. These fine miniature glass 9 pin tubes come with long gray plates, thick mica spacers and top halo getters. They are printed in red with modern RCA logo 12AU7A / ECC82 MADE IN U.S.A. They are also glass etched 12AU7A U.S.A. Boxes are standard modern RCA red printed RCA... Top quality audio double triodes manufactured in the...

    In Stock
  • $US21.00

    General Electric (GE)

    Quality double triode audio amplifier tubes manufactured in the United States by General Electric. These high fidelity 9 pin miniature glass tubes have short gray plates, 4 stout copper posts, and top halo getters. They are printed in white with GE logo ELECTRONIC TUBE 12AU7A / ECC82 with two letter code and 188 Owensboro Kentucky factory code. They are... Quality double triode audio amplifier tubes manufactured...

    In Stock
  • $US20.00

    Radio Corporation of America

    Top of the line miniature glass preamp tubes manufactured in the United States by RCA. These excellent 9 pin clear top tubes have long ribbed gray plates and side D getters. 1960's production, they are printed in red with RCA logo, RCA ELECTRON TUBE MADE IN U.S.A. and glass-etched 12AU7A U.S.A. Top of the line miniature glass preamp tubes manufactured...

    In Stock
  • $US14.00

    General Electric

    Fine double triode preamp tubes manufactured in the United States by Genral Electric. These miniature glass 9 pin tubes come with short ribbed gray plates and top halo getters. 1960's production, they are printed in white with old style GE logo, ELECTRONIC TUBE, and glass-etched 12AU7A and either CANADA or U.S.A. Fine double triode preamp tubes manufactured in the...

    In Stock
  • $US33.00

    Sylvania

    Double triode preamp. tubes manufactured in Canada or United States by Sylvania. These 9 pin miniature glass tubes have long gray plates and top halo getters. They are printed in yellow with Sylvania logo, SYLVANIA MADE IN CANADA or U.S.A. three letter and two letter variable codes, and glass-etched 12AU7A CANADA or U.S.A. Double triode preamp. tubes manufactured in Canada or...

    In Stock
  • $US29.00

    RCA vacuum tubes

    Fine double triode preamp tubes manufactured in the United States or Canada by RCA. These beautiful 9 pin miniature glass amplifier tubes will enhance your sound system, and come with gray plates, top halo getters and two thick mica internal supports. They are printed in white with RCA logo, RCA ELECTRON TUBE with various codes indicating 1960's or 1970's... Fine double triode preamp tubes manufactured in the...

    In Stock
  • $US8.00

    Various manufacturer

    In Stock
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    $US4.00 $US16.00

    Radio Corporation of America

    Top quality 9-pin clear-top twin triodes manufactured in United States by RCA. These miniature glass tubes are designed for use in high-speed digital computers, with separate cathode connections. Tubes have side halo getters, 4 solid copper vertical posts, and gray plates. They are glass engraved 5965A U.S.A. Top quality 9-pin clear-top twin triodes manufactured in...

    In Stock
  • $US33.00

    Rogers

     Double triode preamp tubes manufactured in Canada by renowned Rogers. These miniature glass 9 pin double triodes come with gray plates, two thick mica spacers, and top halo getters. They are printed in white 12AX7 MADE IN CANADA ROGERS, with various production codes.  Double triode preamp tubes manufactured in Canada by...

    In Stock
  • $US9.00

    Sovtek

     Tough audio 9 pin double triode tubes manufactured in Russia by Sovtek; filament is at 6.3 volts. These sturdy miniature glass preamp tubes come with triple mica spacers and top getters. They are printed in white OTK1 6N2P.  Tough audio 9 pin double triode tubes manufactured in...

    In Stock
  • $US56.00

    General Electric

     Fine double triode audio amplifier tubes manufactured in the United States or Canada by General Electric. These 9 pin glass tubes come with long black plates, top getters, and two mica spacers. They are printed in red or white with GE logo, ELECTRONIC TUBE MADE IN U.S.A/CANADA, and glass engraved 12AX7.  Fine double triode audio amplifier tubes manufactured in...

    In Stock
  • $US49.00

    Westinghouse

     Quality double triode amplifier tubes manufactured by Westinghouse in the United States or Canada. These 9 pin miniature glass audio tubes come with long black plates, top getters, and thick mica supports. They are glass etched 12AX7 U.S.A or CANADA, and are printed either in yellow or white WESTINGHOUSE ELECTRONIC TUBE, some also have Mil. Spec. markings.  Quality double triode amplifier tubes manufactured by...

    In Stock
  • $US39.00

    Tung-Sol

     Top quality double triode preamp tubes manufactured in the United States by Tung-Sol. These fine miniature glass 9 pin tubes come with long gray ribbed plates, top D getters, and thick mica spacers. They are printed in white TUNG-SOL MADE IN U.S.A. coded seven digits beginning 322, and glass etched 12AX7.    Top quality double triode preamp tubes manufactured in...

    In Stock
  • $US29.00

    Various manufacturer

     Quality double triode audio amplifier tubes by various manufacturers in the United States. These miniature glass 9 pin tubes have long gray ribbed plates, thick mica supports, and top getters. They are glass engraved 12AX7, some with dot codes, and printed with various manufacturers names.  Quality double triode audio amplifier tubes by various...

    In Stock
  • $US49.00

    Sylvania

     Great sounding double triode audio tubes manufactured in the United States by renowned Sylvania. These miniature glass 9 pin tubes come with long gray ribbed plates, four stout copper posts, and top halo getters. They are printed in yellow MADE BY SYLVANIA MADE IN U.S.A. and glass-etched 12AX7 U.S.A.  Great sounding double triode audio tubes manufactured in...

    In Stock
  • $US27.00

    RCA vacuum tubes

     Quality double triode amplifier tubes manufactured in Japan by renowned RCA. These fine 9 pin miniature glass tubes, suitable for resistance coupled high gain audio amplification, are delivered with gray plates and top halo getters. They are printed in red with modern RCA logo, coded HH.T, and in white 12AX7A / ECC83 JAPAN. They are also glass etched...  Quality double triode amplifier tubes manufactured in...

    Out of stock
  • $US35.00

    Radio Corporation of America

     Fine audio double triode tubes manufactured by RCA in the United States. These miniature glass 9 pin amplifier tubes have short gray ribbed plates, stout posts and top halo getters. They are printed in red or white RCA ELECTRON TUBE, and glass etched 12AX7A U.S.A.  Fine audio double triode tubes manufactured by RCA in...

    In Stock
  • $US49.00

    General Electric

     Best quality audio double triodes manufactured in the United States by Genral Electric. These miniature glass 9 pin amplifier tubes come with top halo getters, two mica supports, and gray plates. They are glass etched 12AX7WA U.S.A. with dot codes, and partial green printing GENERAL ELECTRIC.  Best quality audio double triodes manufactured in the...

    In Stock
  • $US13.00

    Sovtek

     Fine double triode audio tubes manufactured in Russia by renowned Sovtek. These 9 pin glass amplifier tubes come with two thick mica spacers, short gray plates and top getters. From bulk trays, they are printed 7025 / 12AX7WA MADE IN RUSSIA SOVTEK and coded 0307.  Fine double triode audio tubes manufactured in Russia by...

    In Stock
  • $US39.00

    Joint Army Navy US (JAN)
    General Electric

     Top of the line audio double triode tubes manufactured for the US armed forces by General Electric. These tough 9 pin miniature glass tubes come with gray plates, two thick mica spacers, and top disc getters. They are printed in red with GE logo, JLRV 12AX7WA MADE IN U.S.A./CANADA with 1960's date codes. They are also glass engraved 12AX7WA USA/CANADA.  Top of the line audio double triode tubes manufactured...

    In Stock
  • $US53.00

    Sylvania
    Joint Army Navy US (JAN)

     Quality mil. spec. double triodes for preamp manufactured in the United States by renowned Sylvania. These miniature glass 9 pin tubes are delivered with long gray ribbed plates, four stout copper posts, and top halo getters. They are printed in green JHS 12AX7WA SYLVANIA MADE IN U.S.A. with 1960's and 1970's date codes. They are also glass-etched...  Quality mil. spec. double triodes for preamp...

    In Stock
  • $US29.00

    Various manufacturer

    In Stock
  • $US9.00

    Various manufacturer

    In Stock
  • $US17.00

    Various manufacturer

    In Stock
Showing 1 - 60 of 353 items