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2 x KT66 AVO tested valves - excellent. Matched on Gm ; Military Markings
$528.72 HKD - 3 bids
KT66 GEC VALVE NOS UNUSED
Buy: $1016.96 HKD
KT66 ORIGINAL MARSHALL SPARES MATCHED PAIR VALVE/TUBE
$457.63 HKD
KT66 Quad Groove Tubes High (4 Tubes) Fender KT 66 6L6G CV1075 EL37 PP60 VT75
Buy: $507.13 HKD
 Pair of BLACK BASE KT66  Vintage MARCONI / GENELEX Tubes
$1959.83 HKD
Vintage Marconi Osram GEC CV321 KT66 Vacuum Tube NOS Great Britain Pair Set
$3880.47 HKD
NOS Matched Pair Genalex KT66 Tubes -England-Same Codes
Buy: $3723.68 HKD
New Current Matched Quad (4) Reissue Genalex Gold Lion KT66 6L6 Vacuum Tubes
$1148.46 HKD
GEC KT66 CV1075 Twin Halo Getter Brown Base Valve/Tube Used (V28)
$1016.96 HKD
Marconi KT66 Glass Valve/Tube .
Buy: $1403.4 HKD
Marconi KT66 Smoked Grey Glass Valve/Tube Used (V28)
$762.72 HKD
one black glass KT66 Osram BVA made in UK, tested with U61
Buy: $1789.27 HKD
Matched Quads Genalex Gold Lion KT66 tubes,Reissue, NEW
$1225.68 HKD
1 x KT66(6550) GEC Genalex Tube *Smoked Glass*
$783.85 HKD
GEC KT66 CV1075  Pair Smoked Glass Valves/Tubes New Old Stock Same Codes (V29)
$4067.83 HKD
Marconi Osram KT66 CV321 Smoked Grey Glass Valve/Tube Used (V25)
$1322.04 HKD
GEC Osram KT66 CV1075 Shouldered Grey Glass Valve/Tube New Old Stock (V28)
$2694.93 HKD
VT75 KT66 OSRAM Brown Base New Old Stock Tube Valve 1 PC B
$2542.39 HKD
GEC KT66 CV1075 Pair Valves/Tubes New Old Stock Twin Ring Getters (V29)
$4067.83 HKD
Genalex Gold Monarch KT-66 Vacuum Power Output Tube Outstanding Condition!
Buy: $1371.88 HKD
KT66 GEC # NOS/NIB # legendary tube # BOTTOM-OO-GETTER (10676)
$2157.83 HKD
Matched Pair KT66  New Valve Tubes Gold Class Made By Shuguang China
$508.48 HKD
KT66  G.E.C.  VALVES.  WORLD SHIPPING
Buy: $2023.74 HKD
ORIGINAL GENALEX KT66 QUAD MATCHED MONARCH VINTAGE NOS TESTED Mcintosh Marantz
$11758.99 HKD
Rare set of four CV1947 mil-spec valves (KT66 VT-115A 6L6G EL37) suit Quad II
Buy: $2389.85 HKD
KT66 Haltron Made By Osram GEC New Old Stock Tube Valve 1 PC A
$2542.39 HKD
Brimar 6L6G (KT66 Equivalent) Valve / Vacuum Tube - AVO Tested - (#12)
Buy: $813.57 HKD
 KT66 G.E.C INGLESE USATA EMMISSIONE MOLTO FORTE 88 MA
Buy: $890.14 HKD
Matched Quad Tube Amp Doctor TAD KT66-STR Genalex Tube Remake 6L6 QUAD II MC-240
$1168.06 HKD
7581A KT66 GE MATCHED PAIR NOS VALVE/TUBE (LC19)
Buy: $1525.43 HKD
1 x Matched Quad KT66 SOVTEK # NIB # INDUSTRIE # LONGLIFE # all 92mA (72mA=100%)
$1797.36 HKD
KT66 Haltron Made By Osram GEC New Old Stock Tube Valve 1 PC B
$2542.39 HKD
(8) Factory Matched Genalex Gold Lion KT66  6L6 6L6GC
$2657.53 HKD
GEC Osram KT66 CV1075 Shouldered Grey Glass Valve/Tube (V12)
$2542.39 HKD
KT66 CRYOGENIC tubes (6L6GC/5881) Marshall upgraded 6L6 sub tone upgrade!
Buy: $681.94 HKD
Marconi KT66 Curved Brown Base Valve/Tube New Old Stock (V28)
$1677.98 HKD
OSRAM KT66 Shouldered Black Ladder Plate Pan Getter Valve/Tube (V12)
$2542.39 HKD
KT66 OSRAM  VALVE/TUBE Tests OK on an AVO MkIV Valve Tester
$1403.3 HKD
GEC Osram KT66 Shouldered Grey Glass Valve/Tube (V13)
$2542.39 HKD
JJ/Tesla KT66 Power Tubes, Matched Quad
Buy: $1258.92 HKD
GENELEX KT66 SMOKED  GREY GLASS ,Look and Test as NOS
Buy: $1567.87 HKD
1  minimum testing  genelax England kt66 / 6L6 tube #4
$627.07 HKD
GEC Osram KT66 Black Base Smoked Glass Matched Pair Test Good
Buy: $6271.38 HKD
Brand New Tung-Sol Reissue 7581A KT66 Current Matched Quad (4) Vacuum Tubes
Buy: $696.52 HKD
2 excellent strong lightly used genelax England kt66 / 6L6 tubes
$2116.54 HKD
GT-KT88 Matched Quad Groove Tubes Medium Fender KT66 KT90 6L6 tube
Buy: $970.19 HKD
KT66 GEC # NOS # BROWN BASE # MILITARY # smoked-glass-version # (10475)
$2085.98 HKD
KT66 Brimar/GEC # NOS/NIB # BOTTOM-OO-GETTER # SMOKED GLASS - MILITARY (10514)
$2085.98 HKD
KT66 GEC # NOS # BOTTOM-OO-GETTER # legendary tube/oldest production (7335)
$2085.98 HKD
1  test nos  genelax England kt66 / 6L6 tube #5
$1019.03 HKD
KT66  6L6GC International C Servicemaster W. Germany Telefunken ? OLD STOCK
Buy: $1371.88 HKD
2 excellent strong  used genelax England kt66 / 6L6 tubes #2
$1959.75 HKD
GENALEX  KT-66 ORIGINAL 1960'S VACUUM TUBE  NEW IN BOX.. TESTS NEW
$1771.69 HKD
BEAUTIFUL Amperex 7581A/KT66 NOS/NIB MATCHED PAIR 2-Tubes/Valves 6L6GC USA 1971!
$1534.94 HKD
Matched Quads (4 tubes) Tung Sol KT66 Reissue amp tubes, BRAND NEW
$952.48 HKD
1  excellent strong  used genelax England  Gold Lion kt66 / 6L6 tube #3
$1175.82 HKD
EL35 Mullard  White Print KT66 6L6G  B New  Old Stock Valve Tube  1 pc MA18
$1749.17 HKD
BEAUTIFUL General Electric 7581A KT66 GE MATCHED PAIR NOS/NIB Valves/Tubes 6L6GC
$1458.19 HKD
Mullard EL35 Red Print KT66 6L6G Valve Tube (V16)
$1525.43 HKD
Brand New Tung-Sol Reissue KT66 Plate Current Matched Quad (4) Vacuum Tubes
Buy: $1105.34 HKD
7581A GE USA  KT66   New Old Stock Valve Tube 1pc D17
$762.72 HKD
Marconi KT66 Brown Base Valve/Tube New Old Stock (V29)
$1677.98 HKD
RCA 6L6G (KT66 Equivalent) Valve / Vacuum Tube - AVO Tested - (#2)
Buy: $813.57 HKD
Matched Pair RCA 6L6GC NOS/NIB Black Plate Tubes, Same Date Code 1960's MINT!
Buy: $2108.78 HKD
Matched Pair - NOS Gold Aero 7581A (6L6GC/KT66 similar) Very Rare Tubes/valve
Buy: $1889.35 HKD
Matched Quad Vintage 6L6GC / KT66 / 6N3CE PAANO Russia Tube - BangyBang Tubes
$529.15 HKD
 GE 6L6GC + 6L6GC / kt66 Grey plates......1pair
Buy: $611.26 HKD
JJ/Tesla KT66 Power Vacuum Tubes Valves, Matched Pair
Buy: $639.77 HKD
KT66 tubes (6L6GC/5881)matched pair 2 pc Marshall upgraded 6L6 sub tone upgrade!
Buy: $509.48 HKD
EL35 Mullard  White Print KT66 6L6G  A  New  Old Stock Valve Tube  1 pc MA18
$1749.17 HKD
4x NEW JJ Tesla KT66 Vacuum Tubes, Matched Quad TESTED
$1148.46 HKD
5881/6L6/KT66 Tung-Sol / manufacturer RCA # Holy Grail   (8506)
$440.57 HKD
EL35 Mullard  White Print KT66 6L6G E New  Old Stock Valve Tube  1 pc MA18
$1749.17 HKD
Matched Pair (2 tubes) Tung Sol KT66 Reissue amp tubes, BRAND NEW
$454.84 HKD
6L6G KT66 VALVES TESTED TUBES
Buy: $152.54 HKD
EL35 Mullard  White Print KT66 6L6G F New  Old Stock Valve Tube  1 pc MA18
$1749.17 HKD
Genalex Gold Lion Tube Upgrade Kit Marshall Astoria Classic Amps w/KT66 ECC83
$1230.77 HKD
PAIR - WEST GERMAN SERVICEMASTER KT66 TUBES. Tested and in Good Condition
Buy: $313.57 HKD
EL35 Mullard  White Print KT66 6L6G H  New  Old Stock Valve Tube  1 pc MA18
$1749.17 HKD
EL35 Mullard  White Print KT66 6L6G I  New  Old Stock Valve Tube  1 pc MA18
$1749.17 HKD
EL35 Mullard  White Print KT66 6L6G  C New  Old Stock Valve Tube  1 pc MA18
$1749.17 HKD
TWO NOS SYLVANIA VINTAGE AMPLIFIER TUBES 5AR4 / GZ34 + 6L6GC / KT66 KNIGHT AUDIO
$1406.69 HKD
(2x) NEW KT66 JJ / Tesla Audio Output Tubes - VERIFIED MATCHED PAIR
$623.23 HKD
EL35 Mullard  White Print KT66 6L6G G New  Old Stock Valve Tube  1 pc MA18
$1749.17 HKD
EL35 Mullard  White Print KT66 6L6G D New  Old Stock Valve Tube  1 pc MA18
$1749.17 HKD
Sylvania 6L6GC NOS/NIB Tubes Chrome-Top Test/Sound GREAT Matched PAIR  USA Mint!
$979.92 HKD
KT88 Slovakia Tubes Matched Quad Low Fender KT66 KT90 6L6 EL34 6V6
Buy: $935.07 HKD
5881/6L6G/KT66 GE USA  # holy grail # 77mA (72mA=100%) # NOS #  (5399)
$530.49 HKD
RCA 6L6GC NOS/NIB Tubes MINT Matched PAIR CHROME-Top Halo Getr TALL Bottle 1978!
$1527.96 HKD
Sylvania 6L6GC Tubes NOS/NIB Short Bottle Chrome-Top Matched PAIR 1960's NICE !
$851.19 HKD
GE 7581A Valve / Tube tests over Made in Usa KT66 6l6GC
Buy: $457.63 HKD
Full Set Tubes For Quad 2 Matched Quad Set KT66 EF86 Brimar GZ32
$5001.22 HKD
New Reissue Genalex Gold Lion KT66 6L6 Vacuum Tube - Authorized Dealer FREE SHIP
$313.34 HKD
one KT66 Mullard made in Great Britain, tested with U61
Buy: $1789.27 HKD
PERFECT NOS NIB MATCHED PAIR 6L6GC / 6L6 / KT66 SYLVANIA VINTAGE TUBES EXCELLENT
$1734.45 HKD
one clear glass KT66 GEC made in England, tested with U61, keyed broken
Buy: $1789.27 HKD
MEGA RARE 6L6G POWER TUBE TOSHIBA MADE VINATGE 6L6 / KT66 DOUBLR [] [] GETTERS
$1469.8 HKD
Osram KT41 output valve.early KT66 shape.Tests very good.
Buy: $203.39 HKD
GE 6L6GB VACUUM TUBE TESTED NEW
$78.39 HKD
NEW - Single JJ Tesla KT66 Power Vacuum Tube valve
Buy: $310.36 HKD