kt66 marconi

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GEC/Marconi KT66 HK6 Smoked Glass Brown Base Black Plate Cup Getter Matched Pair
$500.00

GEC/Marconi KT66 HK6 Smoked Glass Brown Base Black Plate Cup Getter Matched Pair

Marconi KT66 Vintage Brown Base Strong in GEC Box
$130.00

Marconi KT66 Vintage Brown Base Strong in GEC Box

KT8C GEC SIMILAR KT66 MARCONI OSRAM TUBE RÖHRE VALVE VALVOLA LAMPE
$30.00

KT8C GEC SIMILAR KT66 MARCONI OSRAM TUBE RÖHRE VALVE VALVOLA LAMPE

1 x MARCONI OSRAM MWT KT66 - CV1075 Test V.STRONG @ 95% Vacuum Audio Power Tube
$217.30

1 x MARCONI OSRAM MWT KT66 - CV1075 Test V.STRONG @ 95% Vacuum Audio Power Tube

1 x MARCONI OSRAM MWT KT66 - CV1075 Tested GOOD Vacuum Audio Beam Power Tube
$178.59

1 x MARCONI OSRAM MWT KT66 - CV1075 Tested GOOD Vacuum Audio Beam Power Tube

Factory Match QUAD Genalex GOLD LION KT-66 KT66 Vacuum tubes
$240.87

Factory Match QUAD Genalex GOLD LION KT-66 KT66 Vacuum tubes

one NOS KT66 GEC MARCONI tested tube
$299.00

one NOS KT66 GEC MARCONI tested tube

MARCONI KT66 Clear Glass Valve (V14) USED and TESTED AVO VCM163
$123.95

MARCONI KT66 Clear Glass Valve (V14) USED and TESTED AVO VCM163

GEC/Marconi KT66 6L6 Smoked Glass Brown Base Black Plate Cup Getter Matched Pair
$499.00

GEC/Marconi KT66 6L6 Smoked Glass Brown Base Black Plate Cup Getter Matched Pair

1 x NOS MARCONI OSRAM MWT KT66 CV1075 Tested 107% Vacuum Audio Power Tube
$381.03

1 x NOS MARCONI OSRAM MWT KT66 CV1075 Tested 107% Vacuum Audio Power Tube

GEC Marconi KT66 6L6 Clear Glass Brown Base Grey Plate OO Getter Matched Quad
$1,368.00

GEC Marconi KT66 6L6 Clear Glass Brown Base Grey Plate OO Getter Matched Quad

MARCONI AM SIGNAL GENERATOR model TF801D/1 partly checked out and working KT66
$215.00

MARCONI AM SIGNAL GENERATOR model TF801D/1 partly checked out and working KT66

Firve Marconi 6L6G KT66 Smoked Glass Foil Getter NOS NIB Matched Pair
$499.00

Firve Marconi 6L6G KT66 Smoked Glass Foil Getter NOS NIB Matched Pair

Firve Marconi 6L6G KT66 Smoked Glass Foil Getter NOS NIB Matched Pair
$550.00

Firve Marconi 6L6G KT66 Smoked Glass Foil Getter NOS NIB Matched Pair

Firve Marconi 6L6G KT66 Smoked Glass Foil Getter NOS Matched Pair
$695.00

Firve Marconi 6L6G KT66 Smoked Glass Foil Getter NOS Matched Pair

Firve Marconi 6L6 KT66 Smoked Glass Foil Getter Used Tested Good
$248.65

Firve Marconi 6L6 KT66 Smoked Glass Foil Getter Used Tested Good

3pcs NIB GEC Marconi CV57 tubes larger KT66
$232.50

3pcs NIB GEC Marconi CV57 tubes larger KT66

2x Marconi 6L6/KT66 Smoked Glass Foil Getter - NOS
$600.00

2x Marconi 6L6/KT66 Smoked Glass Foil Getter - NOS

6L6 MARCONI ITALY 6L6G TUBE STEREO 350B QUAD VINTAGE AMPLIFIER KT66 5881 6550 DD
$2,550.00

6L6 MARCONI ITALY 6L6G TUBE STEREO 350B QUAD VINTAGE AMPLIFIER KT66 5881 6550 DD

Firve Marconi 6L6 KT66 Smoked Glass Foil Getter Used Tested Good
$248.65

Firve Marconi 6L6 KT66 Smoked Glass Foil Getter Used Tested Good

GEC Marconi KT66 6L6 Clear Glass Brown Base Grey Plate Cup Getter Matched Quad
$1,368.00

GEC Marconi KT66 6L6 Clear Glass Brown Base Grey Plate Cup Getter Matched Quad

GEC Marconi KT66 6L6 Clear Glass Brown Base Grey Plate Cup Getter Matched Quad
$1,468.00

GEC Marconi KT66 6L6 Clear Glass Brown Base Grey Plate Cup Getter Matched Quad

(Sweet Edition Ⅱ ) Factory Match QUAD Genalex GOLD LION KT-66 KT66 Vacuum tubes
$371.07

(Sweet Edition Ⅱ ) Factory Match QUAD Genalex GOLD LION KT-66 KT66 Vacuum tubes

6L6G tube Marconi GC WGB quad amplifier 6p3s tubes el34 metal kt66 kt88 6550
$1,850.00

6L6G tube Marconi GC WGB quad amplifier 6p3s tubes el34 metal kt66 kt88 6550

KT63 6F6G Marconi Black Coated Glass Amplitrex AT1000 Tested Qty 1 Match Pair
$216.00

KT63 6F6G Marconi Black Coated Glass Amplitrex AT1000 Tested Qty 1 Match Pair

KT63 6F6G Marconi Black Coated Glass Amplitrex Tested Qty 1 Match Pair
$216.00

KT63 6F6G Marconi Black Coated Glass Amplitrex Tested Qty 1 Match Pair

KT63 6F6G Marconi Black Coated Glass Amplitrex Tested Qty 1 Match Pair
$216.00

KT63 6F6G Marconi Black Coated Glass Amplitrex Tested Qty 1 Match Pair

KT63 6F6G Marconi Black Coated Glass Made in England Amlitrex AT1000
$108.00

KT63 6F6G Marconi Black Coated Glass Made in England Amlitrex AT1000

(Elegant Edition) NOS Match 1 QUAD STC 12E1 CV345 TUBES
$185.07

(Elegant Edition) NOS Match 1 QUAD STC 12E1 CV345 TUBES

KT63 6F6G Marconi Black Coated Glass Amplitrex Tested Qty 1 Match Pair
$216.00

KT63 6F6G Marconi Black Coated Glass Amplitrex Tested Qty 1 Match Pair

KT63 6F6G Marconi Black Coated Glass Amplitrex Tested Qty 1 Match Pair
$216.00

KT63 6F6G Marconi Black Coated Glass Amplitrex Tested Qty 1 Match Pair

Matched Quad 4x Vintage 1960s GEC KT66 Marconi Brown Base Valves Tubes *Tested*
$489.60

Matched Quad 4x Vintage 1960s GEC KT66 Marconi Brown Base Valves Tubes *Tested*

KT66 MARCONI LONG GREY GLASS NOS BOXED VALVE TUBE (LC10)
$247.90

KT66 MARCONI LONG GREY GLASS NOS BOXED VALVE TUBE (LC10)

KT66 Marconi / GEC Grey Glass NOS Valve Tube AUG23B
$223.11

KT66 Marconi / GEC Grey Glass NOS Valve Tube AUG23B

Rare Marconi MWT KT-66 Grey glass brown base Valve/Vacuum Tube-AVO Tested strong
$198.26

Rare Marconi MWT KT-66 Grey glass brown base Valve/Vacuum Tube-AVO Tested strong

Marconi GEC KT66 Grey Smoke Glass A USED Tube AMPLITREX Test GM% 92 Jun24
$148.74

Marconi GEC KT66 Grey Smoke Glass A USED Tube AMPLITREX Test GM% 92 Jun24

KT66 MARCONI VINTAGE GREY GLASS NOS BOXED VALVE TUBE (LC53)
$309.88

KT66 MARCONI VINTAGE GREY GLASS NOS BOXED VALVE TUBE (LC53)

Marconi by GEC KT66 CV1075 Valve Tube Used Tested (V13)
$148.74

Marconi by GEC KT66 CV1075 Valve Tube Used Tested (V13)

4x Marconi WMT KT66 Valves Tubes Gray Bottle Eq EL37 CV1075 VT75 6L6G PP60
$892.44

4x Marconi WMT KT66 Valves Tubes Gray Bottle Eq EL37 CV1075 VT75 6L6G PP60

1 x GEC KT66 Marconi / Osram - Twin Hello Getter - Grey Glass NOS NIB
$195.84

1 x GEC KT66 Marconi / Osram - Twin Hello Getter - Grey Glass NOS NIB

Marconi-OSRAM GEC M-O Company UK KT66/CV1075 Matched Quad.Original Box
$1,864.12

Marconi-OSRAM GEC M-O Company UK KT66/CV1075 Matched Quad.Original Box

KT66 MARCONI NOS BOXED VALVE TUBE (LB25)
$185.93

KT66 MARCONI NOS BOXED VALVE TUBE (LB25)

KT66 Marconi MOV Twin Getters at Base D Valve Tube New Old Stock 1pc DEC21
$223.11

KT66 Marconi MOV Twin Getters at Base D Valve Tube New Old Stock 1pc DEC21

Vintage Marconi KT66 Grey Glass Valve Tube Used Tested (V6)
$154.94

Vintage Marconi KT66 Grey Glass Valve Tube Used Tested (V6)

1 x GEC KT66 Marconi / Osram - Twin Hello Getter - Clear Glass NOS NIB
$175.12

1 x GEC KT66 Marconi / Osram - Twin Hello Getter - Clear Glass NOS NIB

MWT Marconi KT66 Grey Glass Valve Tube Used Tested (V58)
$154.94

MWT Marconi KT66 Grey Glass Valve Tube Used Tested (V58)

KT66 marconi osram valve tube NOS NIB
$185.93

KT66 marconi osram valve tube NOS NIB

Marconi KT66 CV1075 Valve Tube Used Tested (V32)
$148.74

Marconi KT66 CV1075 Valve Tube Used Tested (V32)

MARCONI KT66 (CV1075) (CV1947) (EL37) NOS Valve Tube
$309.88

MARCONI KT66 (CV1075) (CV1947) (EL37) NOS Valve Tube

KT66 BRITISH MARCONI BLUE SMOKED NOS TUBE VALVE 6550 350B VINTAGE OLDEST LAMP
$414.48

KT66 BRITISH MARCONI BLUE SMOKED NOS TUBE VALVE 6550 350B VINTAGE OLDEST LAMP

KT66 USED PAIR FRAMES EMISSION 92 BUT SAME BRAND
$341.95

KT66 USED PAIR FRAMES EMISSION 92 BUT SAME BRAND

Marconi KT66 (CV1075) (CV1947) (EL37) Vintage NOS Valve Tube
$247.90

Marconi KT66 (CV1075) (CV1947) (EL37) Vintage NOS Valve Tube

6V6 Tube MARCONI TUBE 6V6GT QUAD OO GETTER LEAK TL-10 VT-107 EL33 KT66 6L6G
$259.05

6V6 Tube MARCONI TUBE 6V6GT QUAD OO GETTER LEAK TL-10 VT-107 EL33 KT66 6L6G

KT66 MARCONI VINTAGE GREY GLASS NOS VALVE TUBE (LB26)
$223.11

KT66 MARCONI VINTAGE GREY GLASS NOS VALVE TUBE (LB26)

6V6 tubes MARCONI TUBE 6V6GT QUAD DD GETTER LEAK TL-10 VT-107 EL33 KT66 6L6G
$259.05

6V6 tubes MARCONI TUBE 6V6GT QUAD DD GETTER LEAK TL-10 VT-107 EL33 KT66 6L6G

KT66 MARCONI VINTAGE GREY GLASS NOS BOXED VALVE TUBE (LC33)
$247.90

KT66 MARCONI VINTAGE GREY GLASS NOS BOXED VALVE TUBE (LC33)

Factory Platinum Matched Pair Genalex Gold Lion KT66 tubes, BRAND NEW in Box !
$119.54

Factory Platinum Matched Pair Genalex Gold Lion KT66 tubes, BRAND NEW in Box !

Vintage Pair Genalex KT66 Tubes Untested Sold As Is.
$199.99

Vintage Pair Genalex KT66 Tubes Untested Sold As Is.

Genalex Gold Lion KT-66 Power Tubes Matched Pair
$109.99

Genalex Gold Lion KT-66 Power Tubes Matched Pair

Strong UNKNOWN Brown Base KT66 Tube - Tube Worked Great
$0.01

Strong UNKNOWN Brown Base KT66 Tube - Tube Worked Great

Factory Platinum Matched Quad Genalex Gold Lion KT66 tubes, BRAND NEW in Box !
$251.71

Factory Platinum Matched Quad Genalex Gold Lion KT66 tubes, BRAND NEW in Box !

Genelex KT-66 Audio Tube, Made in England, Srong on Amplitrex
$140.00

Genelex KT-66 Audio Tube, Made in England, Srong on Amplitrex

Matched Quad Tube Amp Doctor TAD KT66-STR Genalex Tube Remake 6L6 QUAD II MC-240
$199.00

Matched Quad Tube Amp Doctor TAD KT66-STR Genalex Tube Remake 6L6 QUAD II MC-240

NOS Platinum Match Pair KT66 ValveArt Welded Plates Dual Ring Getters Brown Base
$315.00

NOS Platinum Match Pair KT66 ValveArt Welded Plates Dual Ring Getters Brown Base

1x RFT 6L6 ~ 6L6G KT66 Vintage Beam Power Tube
$170.00

1x RFT 6L6 ~ 6L6G KT66 Vintage Beam Power Tube

RARE NOS 6L6 6L6G KT66 GERMAN VINTAGE TUBE WF- RFT WELDED PLATES * BRIDGE GETTER
$255.50

RARE NOS 6L6 6L6G KT66 GERMAN VINTAGE TUBE WF- RFT WELDED PLATES * BRIDGE GETTER

Pair Vintage Genalex Gold Lion KT66 KT-66 Tubes England Hickok TV7 Tested STRONG
$425.00

Pair Vintage Genalex Gold Lion KT66 KT-66 Tubes England Hickok TV7 Tested STRONG

Matched Quad (4pcs) G.E.C CV1075 KT66 Military Grade Valve Vacuum Tube
$1,395.00

Matched Quad (4pcs) G.E.C CV1075 KT66 Military Grade Valve Vacuum Tube

Genalex KT66 Smoke Glass Vacuum Tube Amplitrex Tested Strong
$150.00

Genalex KT66 Smoke Glass Vacuum Tube Amplitrex Tested Strong

GEC KT66 - pair used , tested great
$270.00

GEC KT66 - pair used , tested great

Strong Genelex KT66 Vacuum Tube 1956 Date
$139.99

Strong Genelex KT66 Vacuum Tube 1956 Date

KT66 - x1 - GEC - Test Good - valve tube - Lot 21
$3.97

KT66 - x1 - GEC - Test Good - valve tube - Lot 21

3 Three 7581A/KT66 Test Good German USSR Made
$69.95

3 Three 7581A/KT66 Test Good German USSR Made

KT66 - x1 - CV1075 - Test Good - valve tube - Lot 23
$30.99

KT66 - x1 - CV1075 - Test Good - valve tube - Lot 23

KT66 - x1 - MWT - Test Good - Valve Tube - Lot 35
$19.83

KT66 - x1 - MWT - Test Good - Valve Tube - Lot 35

Platinum Factory Match 1 Quad Genalex GOLD LION KT88 Vacuum tubes 6550
$304.50

Platinum Factory Match 1 Quad Genalex GOLD LION KT88 Vacuum tubes 6550

MATCH PAIR 6L6G / KT66 350B kENRAD BLACK GLASS TUBES LARGE FOIL GETTERS USA NICE
$164.25

MATCH PAIR 6L6G / KT66 350B kENRAD BLACK GLASS TUBES LARGE FOIL GETTERS USA NICE

Matched 1pair PSVANE ART 6CA7 Vacuum Tube Upgrade EL34 EL34C EL34B 6P3P KT66 6V6
$129.00

Matched 1pair PSVANE ART 6CA7 Vacuum Tube Upgrade EL34 EL34C EL34B 6P3P KT66 6V6

Genalex KT66 VACUUM TUBE Made in England Vintage Original
$160.00

Genalex KT66 VACUUM TUBE Made in England Vintage Original

KT66 GOLD MARSHALL TAD matched Quad Power Tubes OO Getters Fat Bottle Brown Base
$315.00

KT66 GOLD MARSHALL TAD matched Quad Power Tubes OO Getters Fat Bottle Brown Base

KT66 Tubes Matched Pair
$93.27

KT66 Tubes Matched Pair

GEC KT66 BRITISH PAIR OF OLD STOCK TESTED 1950'S GREY GLASS VINTAGE VALVES TUBES
$475.00

GEC KT66 BRITISH PAIR OF OLD STOCK TESTED 1950'S GREY GLASS VINTAGE VALVES TUBES

Marconi KT81 NOS
$65.00

Marconi KT81 NOS

1957 Matched Pair Genelex KT-66 Amplifier Tubes TV-7 Tested @ 87-93% NOS
$429.99

1957 Matched Pair Genelex KT-66 Amplifier Tubes TV-7 Tested @ 87-93% NOS

2 X KT63 MARCONI NOS TUBES, MATCHED PAIR, 1950´S BRITISH PROUCTION C6.ENA
$39.99

2 X KT63 MARCONI NOS TUBES, MATCHED PAIR, 1950´S BRITISH PROUCTION C6.ENA

VERY RARE NOS 6L6G / 350B SYLVANIA * CUP GETTER ENGRAVED BASE TUBE 1947 USA KT66
$200.75

VERY RARE NOS 6L6G / 350B SYLVANIA * CUP GETTER ENGRAVED BASE TUBE 1947 USA KT66

KT66 OSRAM black coated made in England tested Hickok TV7 NOS
$129.00

KT66 OSRAM black coated made in England tested Hickok TV7 NOS

KT66 - x1 - Osram - Test Good - valve tube - Lot 22
$3.97

KT66 - x1 - Osram - Test Good - valve tube - Lot 22

2 RCA 7581A KT66 Power Tubes - Tested - High Quality
$184.99

2 RCA 7581A KT66 Power Tubes - Tested - High Quality

Matched 4pcs PSVANE ACME KT88 AKT88 Vacuum Tube Upgrade 6500 KT120 EL34 KT66
$409.40

Matched 4pcs PSVANE ACME KT88 AKT88 Vacuum Tube Upgrade 6500 KT120 EL34 KT66

Quad of JJ KT66 Power Vacuum Tube
$223.80

Quad of JJ KT66 Power Vacuum Tube

Genalex KT66 Gray Glass Vacuum Tube Amplitrex Tested 96% Gm
$225.00

Genalex KT66 Gray Glass Vacuum Tube Amplitrex Tested 96% Gm

Groove Tubes GT Gold GT-KT66-HP Matched Power Tubes 6 Rating New In Open Box
$80.00

Groove Tubes GT Gold GT-KT66-HP Matched Power Tubes 6 Rating New In Open Box

Brand New Tung-Sol Reissue 7581A KT66 Current Matched Quad (4) Vacuum Tubes
$204.70

Brand New Tung-Sol Reissue 7581A KT66 Current Matched Quad (4) Vacuum Tubes

Vacuum Tube, KT66, Tube Amp Doctor, Premium Selected, Single, Power
$46.95

Vacuum Tube, KT66, Tube Amp Doctor, Premium Selected, Single, Power

Pair of JJ KT66 Power Vacuum Tube
$111.90

Pair of JJ KT66 Power Vacuum Tube

1 Matched Pair KT66 ARS Electron Tube _ Replacs Gold Lion MO Valve Genalex
$81.90

1 Matched Pair KT66 ARS Electron Tube _ Replacs Gold Lion MO Valve Genalex

Vacuum Tube, KT66, Genalex Gold Lion, Matched Pair, Power
$137.90

Vacuum Tube, KT66, Genalex Gold Lion, Matched Pair, Power

TAD KT66 PREMIUM - MATCHED PAIR
$99.95

TAD KT66 PREMIUM - MATCHED PAIR

1 pc KT66 ARS Replaces Gold Lion MO Valve Genalex Mullard
$40.95

1 pc KT66 ARS Replaces Gold Lion MO Valve Genalex Mullard

Rare PAIR GE 7581A 6L6GC KT66 TUBES (1960 Engineer Sample) DDGETTERS Test NOS 👑
$349.99

Rare PAIR GE 7581A 6L6GC KT66 TUBES (1960 Engineer Sample) DDGETTERS Test NOS 👑

KT66, GEC Vintage audio tube, X 4 pcs, tested at AVO MKIII
$2,200.00

KT66, GEC Vintage audio tube, X 4 pcs, tested at AVO MKIII

KT67D Marconi Tube Valve New Old Stock 1 PC OT
$43.38

KT67D Marconi Tube Valve New Old Stock 1 PC OT

NOS Platinum Matched PAIR 6L6GC Dual Disc GETTER Grail TUBES 6L6 KT66 8417
$315.00

NOS Platinum Matched PAIR 6L6GC Dual Disc GETTER Grail TUBES 6L6 KT66 8417

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