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Pair of Tung-Sol 6550 Tubes (Russia 2008) NOS-NIB CRYOSET Certified
Pair of Tung-Sol 6550 Tubes (Russia 2008) NOS-NIB CRYOSET Certified

$224.50

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Brand New Factory Matched Quad (4) Tung-Sol Reissue KT120 / KT-120 Vacuum Tubes
Brand New Factory Matched Quad (4) Tung-Sol Reissue KT120 / KT-120 Vacuum Tubes

$370.28

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Strong Matched Pair Russian TungSol 6550 Vacuum Tubes
Strong Matched Pair Russian TungSol 6550 Vacuum Tubes

$74.99

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Tung-Sol 6550 Electron Tubes, matching pair
Tung-Sol 6550 Electron Tubes, matching pair

$150.00

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Tung-Sol 6550 Vacuum Tube pair (2ct) Vintage Coke Bottle Russia Test Good
Tung-Sol 6550 Vacuum Tube pair (2ct) Vintage Coke Bottle Russia Test Good

$89.00

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Matched Quad NOS Svetlana SED Winged C 6550/KT88 tubes
Matched Quad NOS Svetlana SED Winged C 6550/KT88 tubes

$350.00

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NOS GE 6550 Vacuum Tube Made by Tung-Sol 3-Hole Plate Triple O Getters
NOS GE 6550 Vacuum Tube Made by Tung-Sol 3-Hole Plate Triple O Getters

$175.00

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Svetlana 6550C Vacuum Tube NOS
Svetlana 6550C Vacuum Tube NOS

$54.98

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Matched Quad Svetlana SV6550C KT88 6550 tubes Tested NEW
Matched Quad Svetlana SV6550C KT88 6550 tubes Tested NEW

$225.00

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GE 6550 Vacuum tubes "pair"
GE 6550 Vacuum tubes "pair"

$50.00

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Tung-Sol 6550 Audio Vacuum Tube - 1968 Three Hole Plate - Made in the USA
Tung-Sol 6550 Audio Vacuum Tube - 1968 Three Hole Plate - Made in the USA

$60.00

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2 - Tung Sol 6550 Tubes / Solid Gray Plates / KT1
2 - Tung Sol 6550 Tubes / Solid Gray Plates / KT1

$295.00

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RUBY 6550ASTR Power Vacuum Tube SHUGUANG MATCHED QUAD
RUBY 6550ASTR Power Vacuum Tube SHUGUANG MATCHED QUAD

$224.00

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QUAD / 4 GE General Electric 6550A / 6550 Vacuum Tubes & Boxes TV-7 Tested
QUAD / 4 GE General Electric 6550A / 6550 Vacuum Tubes & Boxes TV-7 Tested

$265.20

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Matched Quad Tung Sol 6550 Tubes / KT1
Matched Quad Tung Sol 6550 Tubes / KT1

$495.00

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RCA 6550 3-Hole Rectifier Vacuum Tube
RCA 6550 3-Hole Rectifier Vacuum Tube

$30.00

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Pair of 2 Audio Matched New Tung-Sol 6550 Vacuum Amplifier Amp Tubes Slovenia
Pair of 2 Audio Matched New Tung-Sol 6550 Vacuum Amplifier Amp Tubes Slovenia

$99.99

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Factory Matched Pair Tung Sol 6550 tubes, Brand New in Box TESTED
Factory Matched Pair Tung Sol 6550 tubes, Brand New in Box TESTED

$100.00

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SVETLANA ELECTRON 6550 6550C VACUUM TUBE RUSSIA
SVETLANA ELECTRON 6550 6550C VACUUM TUBE RUSSIA

$35.19

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6550C Svetlana =C= 6550 Tube
6550C Svetlana =C= 6550 Tube

$131.00

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NOS Tung Sol 6550 Grey 3 Hole Plate OOO Getter Amplitrex Tested
NOS Tung Sol 6550 Grey 3 Hole Plate OOO Getter Amplitrex Tested

$125.00

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RCA 6550 Tube
RCA 6550 Tube

$125.00

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RAM 6550B Quad. Vintage Russian Audiophile Tubes. Tested on TV7. (3 are matched)
RAM 6550B Quad. Vintage Russian Audiophile Tubes. Tested on TV7. (3 are matched)

$70.00

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Matched Quad NOS Svetlana SED Winged C 6550/KT88 tubes - 2001 - Test NEW
Matched Quad NOS Svetlana SED Winged C 6550/KT88 tubes - 2001 - Test NEW

$399.99

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Electro Harmonix 6550EH NEW Matched Pair of Vacuum Tubes TESTED
Electro Harmonix 6550EH NEW Matched Pair of Vacuum Tubes TESTED

$75.00

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Quad Vintage GE 6550A Vacuum Tubes
Quad Vintage GE 6550A Vacuum Tubes

$259.00

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Two 6550 Tubes - Marked "Amperex 6550 Made in USA"
Two 6550 Tubes - Marked "Amperex 6550 Made in USA"

$90.00

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RCA - Tung Sol 6550 Vacuum Tube / KT3
RCA - Tung Sol 6550 Vacuum Tube / KT3

$109.95

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New Svetlana 6550 / 6550C Vacuum Tube
New Svetlana 6550 / 6550C Vacuum Tube

$76.78

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Brand New In Box Current MatchedQuad (4) Electro-Harmonix KT88 Vacuum Tubes
Brand New In Box Current MatchedQuad (4) Electro-Harmonix KT88 Vacuum Tubes

$310.93

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Brand New Matched Quad (4) Genalex Gold Lion Reissue KT88 / 6550 Vacuum Tubes
Brand New Matched Quad (4) Genalex Gold Lion Reissue KT88 / 6550 Vacuum Tubes

$403.24

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4 RCA - Sylvania 6550 Tubes / 78.30 / KT3
4 RCA - Sylvania 6550 Tubes / 78.30 / KT3

$279.95

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Hammond 159P tube amplifier Chokes 10HY 125ma 6550 KT-88 EL-34 6L6GC R24-86
Hammond 159P tube amplifier Chokes 10HY 125ma 6550 KT-88 EL-34 6L6GC R24-86

$32.10

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Matched Pairs GE 6550A NOS NIB Beam Power Tubes. Test NEW (over 60) on TV7-D/U.
Matched Pairs GE 6550A NOS NIB Beam Power Tubes. Test NEW (over 60) on TV7-D/U.

$349.00

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Baldwin - Tung Sol 6550 Tube / Solid Gray Plates / KT2
Baldwin - Tung Sol 6550 Tube / Solid Gray Plates / KT2

$149.95

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4 Quad Four Upscale Audio Matched New Tung-Sol 6550 Vacuum Amplifier Amp Tubes
4 Quad Four Upscale Audio Matched New Tung-Sol 6550 Vacuum Amplifier Amp Tubes

$249.95

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GE 6550 Vacuum tubes..............Matched pair
GE 6550 Vacuum tubes..............Matched pair

$124.95

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Pair NOS NIB GE 6550A Tubes Amplitrex Tested 100%
Pair NOS NIB GE 6550A Tubes Amplitrex Tested 100%

$250.00

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Tube Amp Doctor Kt88 Matched Pair NEW
Tube Amp Doctor Kt88 Matched Pair NEW

$99.00

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New Plate Current Matched Quad (4) Mullard Reissue KT88 / 6550 Vacuum Tubes
New Plate Current Matched Quad (4) Mullard Reissue KT88 / 6550 Vacuum Tubes

$325.49

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PAIR Svetlana 6550C & Winged C OUTPUT Tubes - TESTED STRONG on Hickok
PAIR Svetlana 6550C & Winged C OUTPUT Tubes - TESTED STRONG on Hickok

$119.50

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Tung-Sol 6550 New Production Power Vacuum Tube
Tung-Sol 6550 New Production Power Vacuum Tube

$72.95

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Matched Pair RCA - Tung Sol 6550 Tubes / No Guide Pins / KT4
Matched Pair RCA - Tung Sol 6550 Tubes / No Guide Pins / KT4

$195.00

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SVETLANA 6550-C NOS
SVETLANA 6550-C NOS

$45.00

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One Svetlana 6550 Tube
One Svetlana 6550 Tube

$50.00

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Matched Quad Svetlana Winged =c= 6550 C Tube Tested Strong #31
Matched Quad Svetlana Winged =c= 6550 C Tube Tested Strong #31

$350.00

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Vintage Westinghouse USA GE General Electric 6550 Tubes Pair X2 Tube Maxi Tested
Vintage Westinghouse USA GE General Electric 6550 Tubes Pair X2 Tube Maxi Tested

$109.00

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1 NOS TESTED 6550C SVETLANA Tube Amplitrex tested 106% GM
1 NOS TESTED 6550C SVETLANA Tube Amplitrex tested 106% GM

$49.99

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4 Svetlana Electron 6550C Power Tubes - Dual Getters - Amplitrex - FREE Ship!
4 Svetlana Electron 6550C Power Tubes - Dual Getters - Amplitrex - FREE Ship!

$240.00

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Matched Quad Sylvania 6550 Vacuum Tubes / KT4
Matched Quad Sylvania 6550 Vacuum Tubes / KT4

$295.00

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KT88-T / Matched Quad / LINLAI / Perfect T Grade / Audio 6550 / Vacuum Tube Amp
KT88-T / Matched Quad / LINLAI / Perfect T Grade / Audio 6550 / Vacuum Tube Amp

$299.66

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NOS NIB TUNG-SOL 6550 Output Tube 3-Hole GE
NOS NIB TUNG-SOL 6550 Output Tube 3-Hole GE

$125.00

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Matched Pair Tung Sol 6550 Tubes / KT3
Matched Pair Tung Sol 6550 Tubes / KT3

$249.95

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Hammond 193J tube amplifier Chokes 10HY 200ma 6550 KT-88 EL-34 6L6GC R24-85
Hammond 193J tube amplifier Chokes 10HY 200ma 6550 KT-88 EL-34 6L6GC R24-85

$72.00

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Matched Pair NOS Svetlana SED Winged C 6550/KT88 tubes - 2001 - Test NEW
Matched Pair NOS Svetlana SED Winged C 6550/KT88 tubes - 2001 - Test NEW

$199.99

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MATCHED PAIR OF AUDIO CLASSICS 6550 STOCK VACUUM TUBES (BJR1011)
MATCHED PAIR OF AUDIO CLASSICS 6550 STOCK VACUUM TUBES (BJR1011)

$99.99

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GE General Electric 6550 / 6550A Vacuum Tube - Hickok TV7 Tested 58.6
GE General Electric 6550 / 6550A Vacuum Tube - Hickok TV7 Tested 58.6

$59.50

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Vintage New Old Stock RCA 6550 Vacuum Tube TV7 Tested
Vintage New Old Stock RCA 6550 Vacuum Tube TV7 Tested

$75.00

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Factory Platinum Matched Quad Genalex Gold Lion KT88 tubes, BRAND NEW in Box !
Factory Platinum Matched Quad Genalex Gold Lion KT88 tubes, BRAND NEW in Box !

$329.95

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RCA 6550 Tube- Tested 106% 11,720 Micromhos 138.6ma NOS- New in Box
RCA 6550 Tube- Tested 106% 11,720 Micromhos 138.6ma NOS- New in Box

$80.00

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L 6550 Vacuum Tube Used - In Sovtek Box
L 6550 Vacuum Tube Used - In Sovtek Box

$20.00

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Pair Fender Groove Tubes GT-6550 Test Strong
Pair Fender Groove Tubes GT-6550 Test Strong

$59.95

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RCA 6550 / KT88 ADA 8043 3-Hole Vacuum Tube w/ Original Box - Hickok TV7 Tested
RCA 6550 / KT88 ADA 8043 3-Hole Vacuum Tube w/ Original Box - Hickok TV7 Tested

$63.75

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Tung Sol 6550 Tube / Solid Gray Plates / No Guide Pin / KT1
Tung Sol 6550 Tube / Solid Gray Plates / No Guide Pin / KT1

$119.95

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New in Box: ShuGuang 6550A-98 Electron Power Tubes
New in Box: ShuGuang 6550A-98 Electron Power Tubes

$37.50

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NOS RCA 6550 Power Amplifier VACUUM TUBE New in Box
NOS RCA 6550 Power Amplifier VACUUM TUBE New in Box

$100.50

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RARE Matched Quad NOS/NIB General Electric 6550A tubes Triple getter
RARE Matched Quad NOS/NIB General Electric 6550A tubes Triple getter

$599.99

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Factory Platinum Matched Pair Tung Sol 6550 tubes, Brand New in Box !
Factory Platinum Matched Pair Tung Sol 6550 tubes, Brand New in Box !

$139.95

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Svetlana 6550C Vacuum Tubes NOS/NIB Tested and Matched Pair
Svetlana 6550C Vacuum Tubes NOS/NIB Tested and Matched Pair

$139.00

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Brand New Matched Pair (2) Genalex Gold Lion Reissue KT88 / 6550 Vacuum Tubes
Brand New Matched Pair (2) Genalex Gold Lion Reissue KT88 / 6550 Vacuum Tubes

$199.01

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RCA 6550 Audio Pentode NOS Clean! Tests GOOD! BlkPlates! 3-Getter! 7430 code
RCA 6550 Audio Pentode NOS Clean! Tests GOOD! BlkPlates! 3-Getter! 7430 code

$179.99

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Matched Pair Made in Russia Tung-Sol 6550 Tested Strong
Matched Pair Made in Russia Tung-Sol 6550 Tested Strong

$80.00

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2 Tung Sol 6550 Tubes / 1 Missing Guide Pin / KT8
2 Tung Sol 6550 Tubes / 1 Missing Guide Pin / KT8

$195.00

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VINTAGE TUNG-SOL JAN 6550 USA AUDIO TUBE AMPLITREX TESTED STRONG 83% Gm
VINTAGE TUNG-SOL JAN 6550 USA AUDIO TUBE AMPLITREX TESTED STRONG 83% Gm

$125.00

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Vacuum Tube Tung-Sol KT88 6550 Coke Bottle Made USA Tests Strong Dyna Jet 606 P4
Vacuum Tube Tung-Sol KT88 6550 Coke Bottle Made USA Tests Strong Dyna Jet 606 P4

$159.00

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4 GE - General Electric 6550A Tubes / KT1
4 GE - General Electric 6550A Tubes / KT1

$319.95

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vintage GE 6550 Vacuum tubes....Matched pair... NOS ....Original Boxes
vintage GE 6550 Vacuum tubes....Matched pair... NOS ....Original Boxes

$249.95

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NEW!!! 2pcs Matched PSVANE KT88-T3 ART Series Vacuum Tubes 6550
NEW!!! 2pcs Matched PSVANE KT88-T3 ART Series Vacuum Tubes 6550

$192.28

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Brand New Factory Matched Quad 4x Sovtek 6550WE Vacuum Tubes
Brand New Factory Matched Quad 4x Sovtek 6550WE Vacuum Tubes

$245.95

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Quad of JJ 6550 Power Vacuum Tube
Quad of JJ 6550 Power Vacuum Tube

$227.80

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1 PC Vacuum tube Shuguang NOS 6P3P Re 6L6GC KT66 6CA7 EL34 6L6 6550 KT88
1 PC Vacuum tube Shuguang NOS 6P3P Re 6L6GC KT66 6CA7 EL34 6L6 6550 KT88

$28.99

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Matched Date PAIR Sylvania USA 6550 Tubes Metal Base 1970s USED - Test 100% NOS
Matched Date PAIR Sylvania USA 6550 Tubes Metal Base 1970s USED - Test 100% NOS

$135.73

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GE 6550 Vacuum tubes.... Groove Tube Label..........Matched pair
GE 6550 Vacuum tubes.... Groove Tube Label..........Matched pair

$124.95

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Closely Matched Pair GE 6550A Tested Strong Tube
Closely Matched Pair GE 6550A Tested Strong Tube

$168.45

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2 x NOS GE USA TripleDiscGetter 6550A ~ Matched Vintage Power Tubes ~ Grail Tone
2 x NOS GE USA TripleDiscGetter 6550A ~ Matched Vintage Power Tubes ~ Grail Tone

$375.00

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Tung-Sol 6550 Vintage Solid Plate Coke Bottle Power Tube USA
Tung-Sol 6550 Vintage Solid Plate Coke Bottle Power Tube USA

$125.00

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Tung Sol / Tung-Sol 6550 Tube Made in USA. #1
Tung Sol / Tung-Sol 6550 Tube Made in USA. #1

$150.00

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TAD Premium Selected Factory Matched Quad Red Base 6550A-STR Tubes GE Remake
TAD Premium Selected Factory Matched Quad Red Base 6550A-STR Tubes GE Remake

$289.00

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Matched Pair Tung Sol 6550 Tubes / KT7
Matched Pair Tung Sol 6550 Tubes / KT7

$249.95

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Matched Pair of Sylvania 6550 Vacuum Tubes / KT2
Matched Pair of Sylvania 6550 Vacuum Tubes / KT2

$149.95

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2 Tung Sol 6550 Vacuum Tubes / KT9
2 Tung Sol 6550 Vacuum Tubes / KT9

$219.95

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Vintage Amperex England 6550 Vacuum Tube TV7DU Tested New Old Stock
Vintage Amperex England 6550 Vacuum Tube TV7DU Tested New Old Stock

$119.99

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4 Factory Platinum Matched Genalex Gold Lion KT88 KT-88 6550 For McIntosh ARC +
4 Factory Platinum Matched Genalex Gold Lion KT88 KT-88 6550 For McIntosh ARC +

$365.00

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Matched Pair Tung Sol 6550 Tubes / KT6
Matched Pair Tung Sol 6550 Tubes / KT6

$249.95

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Sylvania 6550 Vacuum Tube / KT3
Sylvania 6550 Vacuum Tube / KT3

$69.95

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Matched Quad Philips ECG - Sylvania 6550 Tubes / KT2
Matched Quad Philips ECG - Sylvania 6550 Tubes / KT2

$295.00

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Vintage 1965 Tung-Sol 6550 Vacuum Tube 3 Hole Grey Plate 000 Getters TESTED NOS
Vintage 1965 Tung-Sol 6550 Vacuum Tube 3 Hole Grey Plate 000 Getters TESTED NOS

$179.00

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Matched Quad PSVANE Hifi KT88/C Vacuum Tube Replace 6550 KT88 For Audio DIY
Matched Quad PSVANE Hifi KT88/C Vacuum Tube Replace 6550 KT88 For Audio DIY

$173.88

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New Plate Current Matched Quad (4) Tung-Sol Reissue 6550 KT88 Coke Bottle Tubes
New Plate Current Matched Quad (4) Tung-Sol Reissue 6550 KT88 Coke Bottle Tubes

$319.02

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Matched pair KT88 6550 vacuum tube electron tube audio power output tube
Matched pair KT88 6550 vacuum tube electron tube audio power output tube

$79.00

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