4 Tung-Sol 6550 KT88 Reissue Matched Tube Quad - Brand New in Box - Free Ship
$124.99
Brand New Matched Quad (4) Genalex Gold Lion Reissue KT88 / 6550 Vacuum Tubes
$192.16
4 Vintage '01 Original NOS Svetlana Winged C SV6550C 6550 KT88 Matched Tube Quad
$112.50
TUNG SOL 6550 USA JAN TUBES NEW OLD STOCK QUAD SET. . .
$595.00
4 Mullard KT88 6550 Reissue Matched Tube Quad - Brand New in Box - Free Ship
$139.99
6550 R MATCHED QUAD NEW (4 tubes) GROOVE TUBES FENDER MADE RUSSIA BIN $65 KT88
$65.00
Matched Quads (4 tubes) Tung Sol 6550 Reissue amp tubes, BRAND NEW
$126.09
NOS JJ Electronic OEM KT88 Tubes Valves, TESTED Matched Quad KT-88 6550 KT 88
$129.99
4 Brand New Tung-Sol KT120 / (KT88 6550) Factory Matched Amplifier Tube Quad New
$139.99
Electro Harmonix Factory Plat Matched 6550 6550EH Vacuum Tubes QUAD 24hr Burn-in
$119.95
6550-EH Vac.Tubes NEW 100%, LOT OF 2, by ELECTRO-HARMONIX, FACTORY MATCHED QUADÂ
$50.00
KT88 X 4 TESLA JJ BLUE GLASS Matched Quad NEW/NOS 6550 EL34 300B 274A 274B
$200.00
SVETLANA 6550 B-2 PERFECT MATCH QUAD NOS KT88 HICKOK TESTED VT-1000 MATCHED
$119.95
Matched Quad 6550 ShuGuang KT88 HiFi Vacuum Tube Amplifier New Tested Old Stock
$79.92
SOVTEK Factory Platinum Matched QUAD FOUR 6550WE 6550 tubes 24 Hr Burn-in
$112.95
Quad of Tung-Sol 6550 KT88 NOS NIB Solid Gray Plate 1960s Vacuum Tubes
$1,200.00
QUAD of General Electric GE 6550A tubes ~ test NOS...OUTSTANDING!
$610.00
Matched Quad (4) original Svetlana SED 6550C, AT1000 Tested, mid-1990s
$294.00
Quad of Tung-Sol 6550 New Production Power Vacuum Tube
$139.92
(4x) QUAD - SVETLANA 6550 / 6550C (KT88) VACUUM TUBES - CURRENT MATCHED!
$123.00
New Plate Current Matched Quad (4) Tung-Sol Reissue 6550 KT88 Coke Bottle Tubes
$140.98
Electro-Harmonix 6550 EH Matched Quad Set (4) Vacuum Tubes Brand NEW In Box
$117.00
Matched Quads Svetlana 6550 6550C amp tubes, BRAND NEW
$118.88
JJ/Tesla 6550 Power Tubes, Matched Quad
$179.95
Tung-Sol Reissue 6550 Matched Quad Set (4) Coke Bottle Vacuum Tubes NEW In Box
$140.50
New Premium Select NessTone 6550 Power Tube Matched Quad - Big, Clean Warm Bass
$119.99
Factory Matched Quad Tube Amp Doctor TAD 6550 6550A KT88 - GE 6550A Remake
$180.00
Quad of Telefunken Black Diamond 6550
$332.00
GT-6550-R Groove Tubes Matched Quad (4) Tubes HIGH Fender/Sovtek EL34
$70.00
Brand New Plate Current Matched Quad (4) Svetlana KT88-SV Gold Grid Vacuum Tubes
$142.06
Matched Quads (4 tubes) Electro Harmonix 6550 6550EH large tubes, NEW
$107.65
NEW! Power Current Matched Quad (4) JJ Electronic 6550 Vacuum Tubes
$172.00
Valve Art Power Vacuum Tube, 6550A, Matched Quad
$115.85
New Current Matched Quad (4) Psvane KT88 (6550) HiFi Series Vacuum Tubes Hi-Fi
$124.95
Ruby Tubes 6550ASTR Quartet Matched
$163.44
Brand New Current Matched Quad (4) Electro-Harmonix 6550 Ceramic Vacuum Tubes
$131.76
New Plate Current Matched Quad (4) Mullard Reissue KT88 / 6550 Vacuum Tubes
$152.41
TAD Matched Quad Winged C SED 6550 C Tubes-24 Hour Burn In -Premium Selected NOS
$460.00
New Current Matched Quad (4) JJ Electronic 6550 Vacuum Tubes
$178.76
4 Sovtek 6550WE 6550 Factory Matched Amp Tube Quad - Brand New in Box -Free Ship
$109.99
Brand New Plate Current Matched Quad (4) Sovtek 6550WE Vacuum Tubes
$129.07