TubeDatabase
  • Tubes
  • Testers
  • Companies
  • Submit
  • About

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

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
DisclaimerSubmit a tube

Tube record

KT66

Brand
Genalex

Round Tip

Base
Brown
Bottle Height
Tall Bottle
Country
United Kingdom
Getter
Bottom Getter
Glass Color
Grey
Archive ID
7u00jtyl
Pin Color
Silver Pins
Plate Color
Matte Gray
Tip Shape
Round Tip

More tubes branded Genalex

  • 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
  • Genalex KT77 tube — photo 1 of 2
    Genalex KT77 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

    KT77

    Brand
    Genalex
  • Genalex KT88 tube - M.O. — photo 1 of 23
    Genalex KT88 tube - M.O. — photo 2 of 23
    Genalex KT88 tube - M.O. — photo 3 of 23
    Genalex KT88 tube - M.O. — photo 4 of 23
    Genalex KT88 tube - M.O. — photo 5 of 23
    Genalex KT88 tube - M.O. — photo 6 of 23
    Genalex KT88 tube - M.O. — photo 7 of 23
    Genalex KT88 tube - M.O. — photo 8 of 23
    Genalex KT88 tube - M.O. — photo 9 of 23
    Genalex KT88 tube - M.O. — photo 10 of 23
    Genalex KT88 tube - M.O. — photo 11 of 23
    Genalex KT88 tube - M.O. — photo 12 of 23
    Genalex KT88 tube - M.O. — photo 13 of 23
    Genalex KT88 tube - M.O. — photo 14 of 23
    Genalex KT88 tube - M.O. — photo 15 of 23
    Genalex KT88 tube - M.O. — photo 16 of 23
    Genalex KT88 tube - M.O. — photo 17 of 23
    Genalex KT88 tube - M.O. — photo 18 of 23
    Genalex KT88 tube - M.O. — photo 19 of 23
    Genalex KT88 tube - M.O. — photo 20 of 23
    Genalex KT88 tube - M.O. — photo 21 of 23
    Genalex KT88 tube - M.O. — photo 22 of 23
    Genalex KT88 tube - M.O. — photo 23 of 23

    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 23

  • Genalex, Gold Lion B759 tube — photo 1 of 9
    Genalex, Gold Lion B759 tube — photo 2 of 9
    Genalex, Gold Lion B759 tube — photo 3 of 9
    Genalex, Gold Lion B759 tube — photo 4 of 9
    Genalex, Gold Lion B759 tube — photo 5 of 9
    Genalex, Gold Lion B759 tube — photo 6 of 9
    Genalex, Gold Lion B759 tube — photo 7 of 9
    Genalex, Gold Lion B759 tube — photo 8 of 9
    Genalex, Gold Lion B759 tube — photo 9 of 9

    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 9

  • Genalex, Gold Lion B749 tube — photo 1 of 8
    Genalex, Gold Lion B749 tube — photo 2 of 8
    Genalex, Gold Lion B749 tube — photo 3 of 8
    Genalex, Gold Lion B749 tube — photo 4 of 8
    Genalex, Gold Lion B749 tube — photo 5 of 8
    Genalex, Gold Lion B749 tube — photo 6 of 8
    Genalex, Gold Lion B749 tube — photo 7 of 8
    Genalex, Gold Lion B749 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

  • Genalex KT88 tube - M.O. — photo 1 of 13
    Genalex KT88 tube - M.O. — photo 2 of 13
    Genalex KT88 tube - M.O. — photo 3 of 13
    Genalex KT88 tube - M.O. — photo 4 of 13
    Genalex KT88 tube - M.O. — photo 5 of 13
    Genalex KT88 tube - M.O. — photo 6 of 13
    Genalex KT88 tube - M.O. — photo 7 of 13
    Genalex KT88 tube - M.O. — photo 8 of 13
    Genalex KT88 tube - M.O. — photo 9 of 13
    Genalex KT88 tube - M.O. — photo 10 of 13
    Genalex KT88 tube - M.O. — photo 11 of 13
    Genalex KT88 tube - M.O. — photo 12 of 13
    Genalex KT88 tube - M.O. — photo 13 of 13

    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 13

  • Genalex, Gold Monarch KT88 tube - M-O Valve Co. Ltd — photo 1 of 3
    Genalex, Gold Monarch KT88 tube - M-O Valve Co. Ltd — photo 2 of 3
    Genalex, Gold Monarch KT88 tube - M-O Valve Co. Ltd — 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

  • Genalex Z729 tube — photo 1 of 3
    Genalex Z729 tube — photo 2 of 3
    Genalex Z729 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

  • 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

  • Genalex U77, GZ34, 5AR4 tube — photo 1 of 2
    Genalex U77, GZ34, 5AR4 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

    U77, GZ34, 5AR4

    Brand

KT88

Maker
M.O.
Brand
Genalex

B759

Brand
Genalex, Gold Lion

B749

Brand
Genalex, Gold Lion

KT88

Maker
M.O.
Brand
Genalex

KT88

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

Z729

Brand
Genalex

KT66

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

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

  • G.E.C. KT66 tube — photo 1 of 9
    G.E.C. KT66 tube — photo 2 of 9
    G.E.C. KT66 tube — photo 3 of 9
    G.E.C. KT66 tube — photo 4 of 9
    G.E.C. KT66 tube — photo 5 of 9
    G.E.C. KT66 tube — photo 6 of 9
    G.E.C. KT66 tube — photo 7 of 9
    G.E.C. KT66 tube — photo 8 of 9
    G.E.C. KT66 tube — photo 9 of 9

    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 9

KT66

Brand
G.E.C.
  • 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

    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

    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

    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
    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