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6550 Quad


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

$178.45


NOS MATCHED QUAD Tung Sol Style 6550 Tube Shuguang Beijing Made 80's KT88

$69.99


New Matched Quad Svetlana 6550 C Audio Tubes Russia

$124.00


New JJ Electronic OEM KT88 Tubes Valves, Matched Quad KT-88 6550 KT 88

$99.99


Tung Sol 6550 tubes, Quad set , USA New Old Stock JAN . .

$675.00


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

$128.99


New Premium Select NessTone 6550 Power Tube Matched Quad - Big, Clean Warm Bass

$89.99


QUAD of General Electric GE 6550A tubes ~ test NOS...OUTSTANDING!

$610.00


6 SED 6550 C USED Quad & Duet Matched Russian Winged =C= Vacuum Tubes UNTESTED

$179.00


Matched Quads Svetlana 6550 6550C amp tubes, BRAND NEW

$118.75


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

$124.50


Matched Quad (4) original Svetlana SED 6550C, AT1000 Tested, mid-1990s

$294.00


KT88(6550)Cryogenic Valve Art tubes matched pair 2 pcs. quads available.

$89.90


JJ/Tesla 6550 Power Tubes, Matched Quad

$179.95


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

$143.75


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

$124.95


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

$113.63


QUAD OF NOS NIB GE GENERAL ELECTRIC KT88 6550A TUBES MATCHED GM

$649.00


New Current Matched Quad (4) JJ Electronic 6550 Vacuum Tubes

$179.95


Quad of Sovtek 6550WE Power Vacuum Tube

$111.92


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

$119.95


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

$146.36


Brand New Plate Current Matched Quad (4) Svetlana KT88-SV Gold Grid Vacuum Tubes

$131.09


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

$124.50


KT88(6550) Tubes Valve Art tubes matched at high voltage pairs(1)/quads(2)

$69.99


Quad of Tung-Sol 6550 New Production Power Vacuum Tube

$139.92


SVETLANA 6550B-2 TUBES MATCHED QUAD

$250.00


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

$124.98


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

$460.00


6550 Matched Quad GT FENDER SOVTEK New Old Stock NO RESERVE KT88 300B

$36.00


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

$141.60


SOVTEK Factory Platinum Matched QUAD FOUR 6550WE 6550 tubes 24 Hr Burn-in

$112.95


Valve Art Power Vacuum Tube, 6550A, Matched Quad

$115.85


6550-EH Vac.Tubes NEW 100%, LOT OF 4, by ELECTRO-HARMONIX, FACTORY MATCHED QUAD 

$125.00


Ruby Tubes 6550ASTR Quartet Matched

$163.44


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

$100.76


EL34 KT88 6L6 6V6 6550 Quad Vacuum Tube Amplifier Bias Match Tester Suzier T3

$37.13


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

$117.95