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Tube Database (7,341 tube types · 1,270 archive entries)

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KT66

Brand
G.E.C.

Round Tip

Base
Black
Bottle Height
Tall Bottle
Bottle Shape
Fat Bottle
Brand Extended
G.E.C.
Country
England
Glass Color
Grey
Archive ID
4j3x0948
Pin Color
Silver Pins
Tip Shape
Round Tip

More tubes branded G.E.C.

  • G.E.C. TT21 tube - M-O Valve Co. Ltd — photo 1 of 3
    G.E.C. TT21 tube - M-O Valve Co. Ltd — photo 2 of 3
    G.E.C. TT21 tube - M-O Valve Co. Ltd — photo 3 of 3

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    Photo 1 of 3

    TT21

    Maker
    M-O Valve Co. Ltd
    Brand
    G.E.C.
  • G.E.C. B339, ECC83, I61 tube — photo 1 of 8
    G.E.C. B339, ECC83, I61 tube — photo 2 of 8
    G.E.C. B339, ECC83, I61 tube — photo 3 of 8
    G.E.C. B339, ECC83, I61 tube — photo 4 of 8
    G.E.C. B339, ECC83, I61 tube — photo 5 of 8
    G.E.C. B339, ECC83, I61 tube — photo 6 of 8
    G.E.C. B339, ECC83, I61 tube — photo 7 of 8
    G.E.C. B339, ECC83, I61 tube — photo 8 of 8

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    Photo 1 of 8

  • G.E.C. CV2901 tube — photo 1 of 2
    G.E.C. CV2901 tube — photo 2 of 2

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    Photo 1 of 2

    CV2901

    Brand
    G.E.C.
  • G.E.C. ECC83 tube — photo 1 of 3
    G.E.C. ECC83 tube — photo 2 of 3
    G.E.C. ECC83 tube — photo 3 of 3

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    Photo 1 of 3

  • G.E.C. U52 tube — photo 1 of 2
    G.E.C. U52 tube — photo 2 of 2

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    Photo 1 of 2

    U52

    Brand
    G.E.C.
  • G.E.C. ECC82, B329 tube

    ECC82, B329

    Brand
    G.E.C.
  • G.E.C. CV1075 tube — photo 1 of 2
    G.E.C. CV1075 tube — photo 2 of 2

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    CV1075

    Brand
    G.E.C.
  • G.E.C. KT66 tube — photo 1 of 8
    G.E.C. KT66 tube — photo 2 of 8
    G.E.C. KT66 tube — photo 3 of 8
    G.E.C. KT66 tube — photo 4 of 8
    G.E.C. KT66 tube — photo 5 of 8
    G.E.C. KT66 tube — photo 6 of 8
    G.E.C. KT66 tube — photo 7 of 8
    G.E.C. KT66 tube — photo 8 of 8

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    Photo 1 of 8

  • G.E.C. TT22 tube — photo 1 of 3
    G.E.C. TT22 tube — photo 2 of 3
    G.E.C. TT22 tube — photo 3 of 3

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    Photo 1 of 3

  • G.E.C. B65 tube - M-O Valve Co. Ltd — photo 1 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 2 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 3 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 4 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 5 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 6 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 7 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 8 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 9 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 10 of 11
    G.E.C. B65 tube - M-O Valve Co. Ltd — photo 11 of 11

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    Photo 1 of 11

B339, ECC83, I61

Brand
G.E.C.

ECC83

Brand
G.E.C.

KT66

Brand
G.E.C.

TT22

Brand
G.E.C.

B65

Maker
M-O Valve Co. Ltd
Brand
G.E.C.

Equivalent and related tube numbers

Commonly cross-referenced designations for KT66. Compatibility is not guaranteed. Before substituting, verify socket and pinout, heater voltage and current, bias requirements, and maximum ratings against the relevant manufacturers’ datasheets.

  • 5881
  • 6L6

More KT66 type tubes

  • Genalex KT66 tube — photo 1 of 7
    Genalex KT66 tube — photo 2 of 7
    Genalex KT66 tube — photo 3 of 7
    Genalex KT66 tube — photo 4 of 7
    Genalex KT66 tube — photo 5 of 7
    Genalex KT66 tube — photo 6 of 7
    Genalex KT66 tube — photo 7 of 7

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 7

KT66

Brand
Genalex
  • National Electronics 7581A, KT66 tube — photo 1 of 2
    National Electronics 7581A, KT66 tube — photo 2 of 2

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    Photo 1 of 2

    7581A, KT66

    Brand
    National Electronics
  • Marconi KT66 tube — photo 1 of 3
    Marconi KT66 tube — photo 2 of 3
    Marconi KT66 tube — photo 3 of 3

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    Photo 1 of 3

    KT66

    Brand
    Marconi
  • Marconi KT66 tube — photo 1 of 7
    Marconi KT66 tube — photo 2 of 7
    Marconi KT66 tube — photo 3 of 7
    Marconi KT66 tube — photo 4 of 7
    Marconi KT66 tube — photo 5 of 7
    Marconi KT66 tube — photo 6 of 7
    Marconi KT66 tube — photo 7 of 7

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 7

    KT66

    Brand
    Marconi
  • MWT KT66 tube - M-O Valve Co. Ltd — photo 1 of 4
    MWT KT66 tube - M-O Valve Co. Ltd — photo 2 of 4
    MWT KT66 tube - M-O Valve Co. Ltd — photo 3 of 4
    MWT KT66 tube - M-O Valve Co. Ltd — photo 4 of 4

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 4

    KT66

    Maker
    M-O Valve Co. Ltd
    Brand
    MWT
  • Osram KT66 tube — photo 1 of 3
    Osram KT66 tube — photo 2 of 3
    Osram KT66 tube — photo 3 of 3

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 3

    KT66

    Brand
    Osram
  • Emitron KT66 tube — photo 1 of 8
    Emitron KT66 tube — photo 2 of 8
    Emitron KT66 tube — photo 3 of 8
    Emitron KT66 tube — photo 4 of 8
    Emitron KT66 tube — photo 5 of 8
    Emitron KT66 tube — photo 6 of 8
    Emitron KT66 tube — photo 7 of 8
    Emitron KT66 tube — photo 8 of 8

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 8

    KT66

    Brand
    Emitron
  • G.E.C. KT66 tube — photo 1 of 8
    G.E.C. KT66 tube — photo 2 of 8
    G.E.C. KT66 tube — photo 3 of 8
    G.E.C. KT66 tube — photo 4 of 8
    G.E.C. KT66 tube — photo 5 of 8
    G.E.C. KT66 tube — photo 6 of 8
    G.E.C. KT66 tube — photo 7 of 8
    G.E.C. KT66 tube — photo 8 of 8

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 8

    KT66

    Brand
    G.E.C.
  • Osram KT66 tube — photo 1 of 2
    Osram KT66 tube — photo 2 of 2

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 2

    KT66

    Brand
    Osram
  • Genalex, Gold Monarch KT66 tube - M-O Valve Co. Ltd — photo 1 of 8
    Genalex, Gold Monarch KT66 tube - M-O Valve Co. Ltd — photo 2 of 8
    Genalex, Gold Monarch KT66 tube - M-O Valve Co. Ltd — photo 3 of 8
    Genalex, Gold Monarch KT66 tube - M-O Valve Co. Ltd — photo 4 of 8
    Genalex, Gold Monarch KT66 tube - M-O Valve Co. Ltd — photo 5 of 8
    Genalex, Gold Monarch KT66 tube - M-O Valve Co. Ltd — photo 6 of 8
    Genalex, Gold Monarch KT66 tube - M-O Valve Co. Ltd — photo 7 of 8
    Genalex, Gold Monarch KT66 tube - M-O Valve Co. Ltd — photo 8 of 8

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 8

    KT66

    Maker
    M-O Valve Co. Ltd
    Brand
    Genalex, Gold Monarch