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6550 Vacuum Tubes


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

$191.60


PAIR of TUNSOL 6550 VACUUM TUBES

$29.95


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

$128.99


Matched Quad of Tung-Sol 6550 KT88 Solid Gray Plate NOS-Testing Vacuum Tubes

$800.00


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

$95.00


New Current Matched Pair (2) Psvane KT88 (6550) HiFi Series Vacuum Tubes Hi-Fi

$57.95


Matched Pair of Tung-Sol 6550 3-hole NOS-testing Vacuum Tubes

$300.00


New In Box Matched Pair Groove Tube GT- 6550-R Vacuum Tubes

$49.99


NIB new matched pairs Electro Harmonix 6550 / KT88 vacuum tubes $57.99/pair

$57.99


Svetlana NOS Matched Pair SV6550C Vacuum Tubes Made in Russia

$79.00


6550 Teslovak Pair (2) Made Russia KT88 KT90 Vacuum Tube

$38.75


Brand New Current Matched Sextet (6) Svetlana 6550 / 6550C (KT88) Vacuum Tubes S

$209.99


4 Vintage 1950's Tung-Sol 6550 KT88 Solid Grey Plate OOO Matched Amp Tube Quad 2

$103.52


4 Vintage NOS 1960's GE 6550 KT88 Grey Plate OOO Matched Amplifier Tube Quad #1

$28.97


4 Vintage NOS 1960's GE 6550 KT88 Grey Plate OOO Matched Amplifier Tube Quad #2

$22.50


New Plate Current Matched Sextet (6) Tung-Sol Reissue 6550 KT88 Vacuum Tubes

$206.34


4 Vintage 1950's Tung-Sol 6550 KT88 Solid Grey Plate OOO Matched Amp Tube Quad 1

$28.00


New Matched Quad Groove Tube 6550 Vacuum Tubes

$99.99


2x NEW Electro Harmonix 6550 EH 6550EH Power Vacuum Tubes, Matched Pair TESTED

$56.85


Tung-Sol Reissue 6550 Tubes Pair - As Is - Tested

$24.00


Electro-Harmonix 6550 EH Matched PAIR (2) Vacuum Tubes NEW In Box

$49.99


1 (3 Avail.) 1961 Tung-Sol Coke-Bottle 6550 KT88 Vacuum Tube, [email protected]@118-121%

$99.00


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

$123.00


RCA 6550 KT88 Vacuum Tubes ** PAIR ** #1

$300.00


Pair of Tung-Sol 6550 KT88 Black Plate Vacuum Tubes - Gm & Ip Matched

$500.00


6550 TUNG-SOL VACUUM TUBES 3 HOLE COKE BOTTLE 1971 MATCHED PAIR JKPMN WOW

$290.00


Pair 6550 Tung Sol Vacuum Tubes matching date code triple getter coke bottle

$300.00


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

$140.50


Matched Pair of Tung-Sol 6550 KT88 3-hole NOS NIB Vacuum Tubes

$400.00


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

$194.95


6550 Teslovak Triplet (3) tubes Made Russia KT88 KT90 Vacuum Tube

$58.36


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

$109.99


TWO Electro Harmonix Factory Matched 6550 6550EH Vacuum Tubes PAIR 24hr Burn-in

$67.95


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

$80.00


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

$136.95


Brand New Current Matched Sextet (6) Electro-Harmonix 6550 Ceramic Vacuum Tubes

$208.53


Brand New Plate Current Matched Sextet (6) Sovtek 6550WE Vacuum Tubes

$194.97


2 GE 6550A Audio Receiver Guitar Amplifier Vacuum Tubes New Old Stock

$275.00


New Current Matched Octet (8) JJ Electronic 6550 Vacuum Tubes

$338.17


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

$143.75