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6550 Quad Tubes


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

$191.60


Quad Tung-Sol 6550 3 Hole Grey Plate 6550 Audio Tubes USA 1970's

$399.99


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

$138.55


QUAD Tung Sol 6550 KT88 Solid Gray Plate RCA Branded Vacuum Tube

$539.95


Shuguang 6550A-98 ( KT88) Tubes - Matched Quad, Tested.  Brand New.

$80.00


Matched Quads (4 tubes) Tung Sol 6550 Reissue amp tubes, BRAND NEW

$130.00


NOS GT-6550-R Groove Tubes Matched Quad (4) Tubes Fender/Sovtek EL34

$89.95


6550 R MATCHED QUAD NEW (4 tubes) GROOVE TUBES FENDER MADE RUSSIA BIN $85 KT88

$85.00


New Matched Quad Groove Tube 6550 Vacuum Tubes

$99.99


Factory Matched Quad KT88 6550 RAM Industries For Tube Amplifiers TV-7bu Tested

$200.00


NEW NESSTONE 6550 ST **QUAD** Tung Sol Style Power Tubes-Matched-Powerful Tone!

$124.99


JJ/Tesla 6550 Power Tubes, Matched Quad

$179.95


4 x Sylvania 6550 (KT88) tubes quad **** Matched and Balanced ******

$485.00


6550 R MATCHED QUAD NEW (4 tubes) GROOVE TUBES NOS Russia MADE ORIGINAL

$85.00


Electro-Harmonix 6550 EH Matched Quad Set (4) Vacuum Tubes Brand NEW In Boxes

$109.99


(4x) QUAD - SVETLANA 6550 / 6550C (KT88) VACUUM TUBES - CURRENT MATCHED!

$123.00


GT-6550-R Groove Tubes Matched Quad (4) Tubes HIGH Fender/Sovtek EL34

$96.00


Electro Harmonix Factory Plat Matched 6550 6550EH Vacuum Tubes QUAD 24hr Burn-in

$136.95


4x NEW Ruby 6550A-STR 6550ASTR Vacuum Tubes, Matched Quad TESTED

$143.75


2 X Audio Research 6550 KT88 Tubes Quad Matched And Balanced

$188.95


TAD Matched Quad Winged C SED 6550 C Tubes-24 Hour Burn In -Premium Selected NOS

$460.00


NEW! Power Current Matched Quad (4) JJ Electronic 6550 Vacuum Tubes

$172.00


Quad of Tung-Sol 6550 New Production Power Vacuum Tube

$139.92


Brand New Current Matched Quad Svetlana 6550 / 6550C (KT88) Reissue Vacuum Tubes

$129.80


Factory Matched Quad Kt88 6550 Ram Industries For Tube Amplifiers Tv-7BU

$183.95


Quad Set NOS NIB Tungsol JAN 6550 Audio Output Tubes Tested Closely Matched

$1,000.00


Quad of JJ 6550 Power Vacuum Tube

$139.92


New Current Matched Quad (4) Psvane KT88 (6550) HiFi Series Vacuum Tubes Hi-Fi

$124.95


Quad of Sovtek 6550WE Power Vacuum Tube

$131.80


Factory Matched QUAD Svetlana KT88SV 6550 KT88 - For Tube Amplifiers

$160.00


Matched Quads (4 tubes) Electro Harmonix 6550 6550EH large tubes, NEW

$107.65


Valve Art Power Vacuum Tube, 6550A, Matched Quad

$115.85