quad-tung-sol-6550-tube

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1 pair Tung-Sol 6550 Black Plate tube USA 1950s my last pair (322HT3)
1 pair Tung-Sol 6550 Black Plate tube USA 1950s my last pair (322HT3)

$650.00

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Matched Quad Tung Sol 6550 3 Hole Plate OOO Getter Amplitrex Strong SAME DATES
Matched Quad Tung Sol 6550 3 Hole Plate OOO Getter Amplitrex Strong SAME DATES

$560.00

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

$495.00

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TUNG SOL 1950s 6550 Tubes MATCHED QUAD NEW-IN-BOX NEW OLD STOCK Tested 98%-99%
TUNG SOL 1950s 6550 Tubes MATCHED QUAD NEW-IN-BOX NEW OLD STOCK Tested 98%-99%

$1750.00

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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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TUNG-SOL 6550 TUBE / VERY GOOD CONDITION /
TUNG-SOL 6550 TUBE / VERY GOOD CONDITION /

$195.00

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

$249.95

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NOS 1966 Date Matched QUAD 6550 Sylvania by Tung-Sol Vacuum Tubes Kt88 Equiv NIB
NOS 1966 Date Matched QUAD 6550 Sylvania by Tung-Sol Vacuum Tubes Kt88 Equiv NIB

$799.99

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

$295.00

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

$150.00

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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

$249.60

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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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Vtg 6550 TUNG-SOL Vacuum Tube Guaranteed Russia
Vtg 6550 TUNG-SOL Vacuum Tube Guaranteed Russia

$24.00

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TUNG-SOL 6550 OUTPUT TUBE 3-HOLE GE #3
TUNG-SOL 6550 OUTPUT TUBE 3-HOLE GE #3

$125.00

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Top Matched Pair Vintage TUNG-SOL 6550 Audio Tubes / NOS / AT1000 / KT88
Top Matched Pair Vintage TUNG-SOL 6550 Audio Tubes / NOS / AT1000 / KT88

$549.00

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

$90.00

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Date Matched Pair of Tung-Sol 6550 Vacuum Tubes Strong Testing!
Date Matched Pair of Tung-Sol 6550 Vacuum Tubes Strong Testing!

$119.99

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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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Tung-Sol 6550 Vacuum Tube 2nd Version Solid Gray Plates Date: 6064-3 FT-284
Tung-Sol 6550 Vacuum Tube 2nd Version Solid Gray Plates Date: 6064-3 FT-284

$150.00

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New Current Matched Quad (4) Electro-Harmonix 6550 Ceramic Vacuum Tubes
New Current Matched Quad (4) Electro-Harmonix 6550 Ceramic Vacuum Tubes

$299.99

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One quad of Tung-Sol made 6550 electronic tubes
One quad of Tung-Sol made 6550 electronic tubes

$1040.00

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Single Rare Tung-Sol 6550 Solid Black Plate 3 DDD getter tube USA 1950s TSTD NOS
Single Rare Tung-Sol 6550 Solid Black Plate 3 DDD getter tube USA 1950s TSTD NOS

$499.99

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

$388.11

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Tung-Sol 6550 power tubes pair made in 2005 test very strong on Triplett 3444
Tung-Sol 6550 power tubes pair made in 2005 test very strong on Triplett 3444

$165.00

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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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RAM 6550 Matched Pair Output Tubes TEST STRONG SUPERB1
RAM 6550 Matched Pair Output Tubes TEST STRONG SUPERB1

$107.50

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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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Brand New Factory Matched QUAD (4) Tung-Sol KT150 KT-150 Vacuum Tubes DHL EXPRES
Brand New Factory Matched QUAD (4) Tung-Sol KT150 KT-150 Vacuum Tubes DHL EXPRES

$899.99

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Sovtek 6550WE Power Tubes - Matched Duet (2-pack) Bundle
Sovtek 6550WE Power Tubes - Matched Duet (2-pack) Bundle

$271.68

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

$195.08

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(2) BOGEN & RCA 6550 Vacuum Tubes Black Plate
(2) BOGEN & RCA 6550 Vacuum Tubes Black Plate

$200.00

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

$109.95

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Sylvania - Tung Sol 6550 Vacuum Tube / KT5
Sylvania - Tung Sol 6550 Vacuum Tube / KT5

$109.95

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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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NOS NIB TungSol 6550 Vacuum Tube Branded For RCA 1964 Date
NOS NIB TungSol 6550 Vacuum Tube Branded For RCA 1964 Date

$169.99

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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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(2) MATCHED NOS NIB GE 6550A Power Tubes ~ TEST STRONG!
(2) MATCHED NOS NIB GE 6550A Power Tubes ~ TEST STRONG!

$289.99

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TUNG - SOL 6550 vacuum tube set of 8, made in Russia, matched pair, 4 sets
TUNG - SOL 6550 vacuum tube set of 8, made in Russia, matched pair, 4 sets

$900.00

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TELEFUNKEN 6550-TK Black Diamond Series Vacuum Tube
TELEFUNKEN 6550-TK Black Diamond Series Vacuum Tube

$120.95

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Matched Pair Sylvania - Tung Sol 6550 Tubes / KT2
Matched Pair Sylvania - Tung Sol 6550 Tubes / KT2

$249.95

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1 GE BY TUNGSOL EARLY SOLID PLATE 6550 TUBE / RARE / KT88
1 GE BY TUNGSOL EARLY SOLID PLATE 6550 TUBE / RARE / KT88

$189.00

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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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Brand New Plate Current Matched Quad (4) Sovtek 6550WE Vacuum Tubes
Brand New Plate Current Matched Quad (4) Sovtek 6550WE Vacuum Tubes

$305.12

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6550 TUNG-SOL Type 2 - 4th Gen Halo Getter Three Hole Matched Pair USA Tubes
6550 TUNG-SOL Type 2 - 4th Gen Halo Getter Three Hole Matched Pair USA Tubes

$268.74

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Tung Sol / Tung-Sol 6550 Tube Made in USA #2
Tung Sol / Tung-Sol 6550 Tube Made in USA #2

$150.00

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Tungsol 6550 Solid Plate Tested Excellent Matched Quad
Tungsol 6550 Solid Plate Tested Excellent Matched Quad

$1498.65

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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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Tung Sol 6550 Vacuum Tube / No Guide Pin / KT4
Tung Sol 6550 Vacuum Tube / No Guide Pin / KT4

$89.95

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Leslie Tung-Sol 6550 Vintage Coke Bottle Power Tube USA
Leslie Tung-Sol 6550 Vintage Coke Bottle Power Tube USA

$109.00

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Tung-Sol 6550 Power Tubes - Matched Quartet
Tung-Sol 6550 Power Tubes - Matched Quartet

$358.79

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Matched Quad Philips ECG - Sylvania 6550 Tubes / KT1
Matched Quad Philips ECG - Sylvania 6550 Tubes / KT1

$295.00

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2pcs matched NEW Audio Valve Vacuum Tube Russia TUNG-SOL 6550
2pcs matched NEW Audio Valve Vacuum Tube Russia TUNG-SOL 6550

$152.99

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

$219.95

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Tung-Sol 6550 power tubes pair made in 2005 test very strong on Triplett 3444
Tung-Sol 6550 power tubes pair made in 2005 test very strong on Triplett 3444

$165.00

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Tungsol 6550 KT88 Solid Black Plate 3D getter Tested Good Matched Quad
Tungsol 6550 KT88 Solid Black Plate 3D getter Tested Good Matched Quad

$1606.99

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Sovtek 6550WE Power Vacuum Tube
Sovtek 6550WE Power Vacuum Tube

$50.00

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

$150.00

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Matched Pair GE - Tung Sol 6550 Tubes / KT5
Matched Pair GE - Tung Sol 6550 Tubes / KT5

$249.95

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

$249.95

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

$599.00

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

$583.60

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

$227.80

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6550 TUNG-SOL Type 2 - 4th Gen Halo Getter Three Hole Matched Quad USA Tubes
6550 TUNG-SOL Type 2 - 4th Gen Halo Getter Three Hole Matched Quad USA Tubes

$774.47

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Leslie Tung-Sol 6550 Vintage Coke Bottle Power Tube USA
Leslie Tung-Sol 6550 Vintage Coke Bottle Power Tube USA

$115.00

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NOS NIB TungSol 6550 Vacuum Tube Branded For RCA
NOS NIB TungSol 6550 Vacuum Tube Branded For RCA

$174.99

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VINTAGE TUNG-SOL JAN 6550 USA AUDIO TUBE
VINTAGE TUNG-SOL JAN 6550 USA AUDIO TUBE

$222.00

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Brand New Plate Current Matched Quad 4x Sovtek 6550 Vacuum Tubes
Brand New Plate Current Matched Quad 4x Sovtek 6550 Vacuum Tubes

$249.00

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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.

$293.00

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Vacuum Tube, 6550, Tung-Sol Reissue, Apex Matched Quad, Power
Vacuum Tube, 6550, Tung-Sol Reissue, Apex Matched Quad, Power

$294.00

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

$145.90

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SOVTEK Made in Russia 6550WA Valve Tube Amplitrex Tested 100% Gm And emission
SOVTEK Made in Russia 6550WA Valve Tube Amplitrex Tested 100% Gm And emission

$40.00

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4 NOS GE General Electric USA National Gold 6550A 6550 Vacuum tubes Matched
4 NOS GE General Electric USA National Gold 6550A 6550 Vacuum tubes Matched

$588.88

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Tungsol 6550 KT88 Hole Plate Triple O getter Tested NOS Matched Quad
Tungsol 6550 KT88 Hole Plate Triple O getter Tested NOS Matched Quad

$998.00

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Tungsol 6550 KT88 Solid Black Plate 3D getter NOS Tested Matched Quad
Tungsol 6550 KT88 Solid Black Plate 3D getter NOS Tested Matched Quad

$2600.00

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4 National Gold by GE - General Electric 6550A Tubes / KT4
4 National Gold by GE - General Electric 6550A Tubes / KT4

$319.95

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

$249.95

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

$291.80

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Tungsol 6550 Hole Grey Plate Triple O getter Tested Low Work Fine
Tungsol 6550 Hole Grey Plate Triple O getter Tested Low Work Fine

$148.30

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6 NOS GE General Electric USA National Gold 6550A 6550 Vacuum tubes Matched
6 NOS GE General Electric USA National Gold 6550A 6550 Vacuum tubes Matched

$888.88

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Pair Sylvania 3-getter 6550 Power Tubes 8 /15 on the Orange Tester
Pair Sylvania 3-getter 6550 Power Tubes 8 /15 on the Orange Tester

$199.99

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6550 Vacuum Tube -NOS/NIB- From SovTek !!!
6550 Vacuum Tube -NOS/NIB- From SovTek !!!

$19.95

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GE 6550 Vacuum Tube Welded Plates Twin Top Getter Side Wing Getter NOS FT-289
GE 6550 Vacuum Tube Welded Plates Twin Top Getter Side Wing Getter NOS FT-289

$175.00

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VACUUM TUBES - 6550 RUSSIAN TUNG-SOL - FACTORY MATCHED PAIR - TRACED/TESTED! #2
VACUUM TUBES - 6550 RUSSIAN TUNG-SOL - FACTORY MATCHED PAIR - TRACED/TESTED! #2

$145.00

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Quad of Sylvania 6550 Tubes Tested and Matched (b)
Quad of Sylvania 6550 Tubes Tested and Matched (b)

$280.00

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Tungsol 6550 Solid Grey Plate Triple O getter Tested Good Matched
Tungsol 6550 Solid Grey Plate Triple O getter Tested Good Matched

$1229.30

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2 NOS GE General Electric USA National Gold 6550A 6550 Vacuum tubes Matched #2
2 NOS GE General Electric USA National Gold 6550A 6550 Vacuum tubes Matched #2

$288.88

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Used RCA 6550 Triple Getter Grey Plates Serious Tubes D267
Used RCA 6550 Triple Getter Grey Plates Serious Tubes D267

$40.00

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Tungsol 6550 NOS Hole Grey Plate Triple O getter Tested Excellent
Tungsol 6550 NOS Hole Grey Plate Triple O getter Tested Excellent

$265.00

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Sovtek 6550 tubes tested 2ea. (1pr.)
Sovtek 6550 tubes tested 2ea. (1pr.)

$100.00

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Sovtek 6550WE 6550-WE Vacuum Tubes Valves Brand New Russian Made in Russia NOS
Sovtek 6550WE 6550-WE Vacuum Tubes Valves Brand New Russian Made in Russia NOS

$695.00

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Sylvania 6550 Vacuum Tube / No Guide Pin / KT1
Sylvania 6550 Vacuum Tube / No Guide Pin / KT1

$149.95

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Brand New Plate Current Matched Quad 4x Sovtek 6550WE Vacuum Tubes
Brand New Plate Current Matched Quad 4x Sovtek 6550WE Vacuum Tubes

$299.99

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Tungsol 6550 KT88 Solid Black Plate Triple D getter Top Low Tested
Tungsol 6550 KT88 Solid Black Plate Triple D getter Top Low Tested

$280.00

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Factory Platinum Match Quad Svetlana 6550 tubes *4pcs
Factory Platinum Match Quad Svetlana 6550 tubes *4pcs

$277.14

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SYLVANIA 6550 POWER SAUCER GETTER VACUUM TUBES AMPLITREX TESTED 91% Gm
SYLVANIA 6550 POWER SAUCER GETTER VACUUM TUBES AMPLITREX TESTED 91% Gm

$80.00

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Brand New Plate Current Matched Pair 2x Sovtek 6550WE Vacuum Tubes
Brand New Plate Current Matched Pair 2x Sovtek 6550WE Vacuum Tubes

$150.77

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Sovtek 6550WE Power Tubes - Matched Duet (3-pack) Bundle
Sovtek 6550WE Power Tubes - Matched Duet (3-pack) Bundle

$394.65

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Sovtek 6550WE Power Tubes - Matched Duet
Sovtek 6550WE Power Tubes - Matched Duet

$201.59

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