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6550 Quad Tubes


New Current Matched Quad Svetlana 6550 / 6550C Winged C Reissue Vacuum Tubes

$144.99


New Matched Quad Groove Tube 6550 Vacuum Tubes

$89.99


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

$199.09


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

$134.99


Vintage quad of GE 6550A Metal Base Power Tubes

$290.00


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

$150.69


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

$485.00


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

$127.45


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

$159.99


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

$137.04


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

$200.00


Valve Art Power Vacuum Tube, 6550A, Matched Quad

$135.95


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

$123.00


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

$460.00


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

$147.22


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

$107.65


JJ/Tesla 6550 Power Tubes, Matched Quad

$179.95


Quad of Tung-Sol 6550 New Production Power Vacuum Tube

$139.92


Factory Matched QUAD Svetlana KT88SV 6550 KT88 - For Tube Amplifiers

$160.00


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

$164.88


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

$124.95


Factory Matched QUAD Tung-Sol Tungsol 6550 KT88 - For Tube Amplifiers

$155.00


New Matched Quad of JJ Electronic 6550 Power Vacuum Tubes -- TX2

$149.95


Factory Matched Quad Tube Amp Doctor TAD 6550 6550A KT88 - GE 6550A Remake

$180.00


Quad of Sovtek 6550WE Power Vacuum Tube

$131.80


Factory Matched Quad Tube Amp Doctor TAD KT88 6550 For Tube Amplifiers Citation

$199.00


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

$175.98


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

$136.95


Tung-Sol Factory Platinum Matched QUAD 6550 Reissue amp tubes NIB 24hr Burn-in

$139.95


QUAD Factory Platinum Matched Genalex Gold Lion KT88 KT-88 6550 Tubes

$177.95


Matched Quad 6550 ShuGuang KT88 HiFi Vacuum Tube Amplifier New Tested Old Stock

$79.00


Distributor Matched Quad JJ Tesla 6550 - For Audio Research + Tube Amplifiers

$149.95


Matched Quad 6550B-3 NOS Valve Tubes Gold Class Svetlana Russian

$179.77


Vacuum Tube - 6550, JJ Electronics, Single or Matched: Apex Matched Quad

$153.80


Vacuum Tube, 6550A-STR, Tube Amp Doctor, Premium Selected, Matched Quad

$175.80


Distributor Matched Quad JJ Tesla 6550 - For McIntosh Dynaco Tube Amplifiers

$149.95


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

$143.75


Vacuum Tube - 6550WE, Sovtek, Single or Matched: Apex Matched Quad

$137.80


6550C GOLDEN DRAGON Amplifier POWER Tubes (SINGLE Valve Matched PAIR

$109.14


Vacuum Tube - 6550, Electro-Harmonix, Single or Matched: Matched Quad

$145.00


Vacuum Tube, 6550, JJ Electronics, Apex Burned-In Matched Quad

$158.80


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

$172.00