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6550 Tube Quad


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

$192.16


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

$220.00


Set of Four Quad Vintage Tung Sol 6550 Tubes Tested on Computerized Curve Tracer

$479.99


6550 R MATCHED QUAD NEW (4 tubes) GROOVE TUBES FENDER MADE RUSSIA BIN $65 KT88

$65.00


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

$95.00


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

$199.00


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

$155.00


6550B-2 SVETLANA MATCHED QUAD TUBES

$159.00


JJ/Tesla 6550 Power Tubes, Matched Quad

$179.95


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

$178.76


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

$180.00


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

$149.95


Quad of JJ 6550 Power Vacuum Tube

$139.92


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

$172.00


Factory Matched QUAD Svetlana KT88SV 6550 KT88 - For Tube Amplifiers

$160.00


Matched QUAD SED 6550C (KT88) Winged =C= Brand NEW tube

$300.00


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

$460.00


Quad of Sovtek 6550WE Power Vacuum Tube

$111.92


Quad of Tung-Sol 6550 New Production Power Vacuum Tube

$139.92


Ruby Tubes 6550ASTR Quartet Matched

$163.44


GE 6550A KT88 matched quad nos nib tubes valves

$650.00


Tung-Sol Reissue 6550 Matched Quad Set (4) Coke Bottle Vacuum Tubes Brand NEW

$140.50


Quad of GE JAN 6550 A (4 tubes) green print mil.spec. NOS NIB matched quad!

$1,259.00


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

$136.95


EL38 tube MULLARD MATCHED QUAD NOS NIB EL 38 BRITISH CV450 EL33 EL34 KT88 6550

$395.00


Svetlana 6550 winged =C= St.Petersburg original tubes. NOS matching quad (4pcs)

$399.00


4pc Psvane KT88-T / 6550 MK2 Premium Grade Matched Quad Amp Tube Golden Pin

$345.00


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

$117.00


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

$149.80


Match 1 Quad Genalex GOLD LION KT-88 KT88 tubes 6550 Cryo version

$259.00


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

$93.99


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

$140.98


Matched Quads Svetlana 6550 6550C amp tubes, BRAND NEW

$118.88


6L6 MARCONI ITALY 6L6G TUBE STEREO 350B QUAD VINTAGE AMPLIFIER KT66 5881 6550 D

$850.00


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

$107.65