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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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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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Pair Tung Sol 6550 tubes - USA 3 hole gray plate #408-3
Pair Tung Sol 6550 tubes - USA 3 hole gray plate #408-3

$99.00

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

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

$295.00

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RCA 6550 3-Hole Rectifier Vacuum Tube Actual Brand Didn't Show Up As A Selectio
RCA 6550 3-Hole Rectifier Vacuum Tube Actual Brand Didn't Show Up As A Selectio

$80.00

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

$90.00

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

$112.00

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

$450.00

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

$195.00

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

$295.00

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

$495.00

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

$295.00

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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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6550 matched pair tubes USA Gold Aero
6550 matched pair tubes USA Gold Aero

$270.00

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

$124.95

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

$150.00

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

$34.00

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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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Factory Platinum Matched Quad Svetlana 6550 6550C tubes, BRAND NEW in Box !
Factory Platinum Matched Quad Svetlana 6550 6550C tubes, BRAND NEW in Box !

$251.96

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General Electric 6550A RARE Matched Pair NOS/NIB tubes Test Completed Working
General Electric 6550A RARE Matched Pair NOS/NIB tubes Test Completed Working

$322.99

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Ruby 6550 ASTR Vacuum Tube And An ECCA Tube Untested
Ruby 6550 ASTR Vacuum Tube And An ECCA Tube Untested

$49.95

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

$319.95

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

$305.12

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

$249.95

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

$358.79

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Electro-Harmonix 6550 Matched Power Tubes Medium Sextet
Electro-Harmonix 6550 Matched Power Tubes Medium Sextet

$399.99

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

$201.59

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

$50.00

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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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Pair Tung Sol 6550 tubes - USA 3 hole gray plate | broken guide pin
Pair Tung Sol 6550 tubes - USA 3 hole gray plate | broken guide pin

$95.00

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

$219.95

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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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SOVTEK 6550WE 6550 Made in Russia Vacuum Tube Seller USA Box#34
SOVTEK 6550WE 6550 Made in Russia Vacuum Tube Seller USA Box#34

$40.00

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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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GE 6550A Vacuum Tubes (5) Amplitrex Matched to 3% Gm 98% - 101% Beautiful!
GE 6550A Vacuum Tubes (5) Amplitrex Matched to 3% Gm 98% - 101% Beautiful!

$1100.00

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RCA GE 6550 DUAL DISC GETTER POWER VACUUM TUBE AMPLITREX TESTED 87% gm
RCA GE 6550 DUAL DISC GETTER POWER VACUUM TUBE AMPLITREX TESTED 87% gm

$80.00

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

$149.95

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

$19.95

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2 Fender / GE 6550 Vacuum Tubes Tested NOS On Calibrated TV 7
2 Fender / GE 6550 Vacuum Tubes Tested NOS On Calibrated TV 7

$199.95

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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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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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Pair of Sylvania 6550 Tubes Tested and Matched (e)
Pair of Sylvania 6550 Tubes Tested and Matched (e)

$150.00

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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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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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Brand New Plate Current Matched Sextet 6x Sovtek 6550WE Vacuum Tubes
Brand New Plate Current Matched Sextet 6x Sovtek 6550WE Vacuum Tubes

$446.74

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6550 / NEW Matched SET (4)
6550 / NEW Matched SET (4)

$199.00

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

$100.00

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

$249.95

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

$280.00

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

$249.95

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6550 A USA Power Tubes Tested 3
6550 A USA Power Tubes Tested 3

$150.00

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Sovtek 6550WE Matched Quad set of tubes
Sovtek 6550WE Matched Quad set of tubes

$300.00

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Svetlana 6550c Power Tubes - Matched Set
Svetlana 6550c Power Tubes - Matched Set

$99.00

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

$97.50

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Sovtek 6550 WE Vacuum tubes......Matched pair....NOS...Double Halos
Sovtek 6550 WE Vacuum tubes......Matched pair....NOS...Double Halos

$109.95

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Matched Pair of Used Tested 6550A Vacuum Tubes GE/MPD. Test 64 & 62 on TV-7D/U.
Matched Pair of Used Tested 6550A Vacuum Tubes GE/MPD. Test 64 & 62 on TV-7D/U.

$198.00

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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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Elegant edition NOS Match Quad ( 4pcs ) 90'S Shuguang 6550 ST tubes OEM products
Elegant edition NOS Match Quad ( 4pcs ) 90'S Shuguang 6550 ST tubes OEM products

$251.16

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Vacuum Tube, 6550WE, Sovtek, Apex Matched Quad, Power
Vacuum Tube, 6550WE, Sovtek, Apex Matched Quad, Power

$275.40

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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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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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Vacuum Tube, 6550, Electro-Harmonix, Matched Sextet, Power
Vacuum Tube, 6550, Electro-Harmonix, Matched Sextet, Power

$413.70

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Brand New Plate Current Tested Sovtek 6550WE Vacuum Tube
Brand New Plate Current Tested Sovtek 6550WE Vacuum Tube

$71.97

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8 pcs New in original box RCA 6550 audio amplifier tube
8 pcs New in original box RCA 6550 audio amplifier tube

$2499.99

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Sweet Edition Ⅱ Platinum Match Quad Svetlana 6550 tubes
Sweet Edition Ⅱ Platinum Match Quad Svetlana 6550 tubes

$333.87

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Vacuum Tube, 6550WE, Sovtek, Apex Matched Sextet, Power
Vacuum Tube, 6550WE, Sovtek, Apex Matched Sextet, Power

$413.10

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

$147.00

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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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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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Sovtek 6550 WE Vacuum tubes - Matched pair - Tested with Leslie 147 See video
Sovtek 6550 WE Vacuum tubes - Matched pair - Tested with Leslie 147 See video

$110.49

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Vacuum Tube, 6550, Electro-Harmonix, Matched Pair, Power
Vacuum Tube, 6550, Electro-Harmonix, Matched Pair, Power

$137.90

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Pair of Electro-Harmonix 6550 EH Power Vacuum Tube
Pair of Electro-Harmonix 6550 EH Power Vacuum Tube

$135.90

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

$441.00

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NOS Triple Disc Getter Dyna Company Tungsol USA 6550 Power Tube ~ Grail Vintage
NOS Triple Disc Getter Dyna Company Tungsol USA 6550 Power Tube ~ Grail Vintage

$145.00

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Strong 6550 Tube - 100
Strong 6550 Tube - 100

$74.99

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6550WD / 6550 SOVTEK~TUBE~VALVE~TESTED~30 DAY GUARANTEE~VACUUM~RADIO~AMPLIFIER
6550WD / 6550 SOVTEK~TUBE~VALVE~TESTED~30 DAY GUARANTEE~VACUUM~RADIO~AMPLIFIER

$59.95

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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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TUNG-SOL Manufactured Oct 2010 ELECTRON TUBE 6550 PowerTubes Matched Pair x4
TUNG-SOL Manufactured Oct 2010 ELECTRON TUBE 6550 PowerTubes Matched Pair x4

$824.98

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