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6550 Tubes


Pair Tung Sol 6550 KT88 Solid Gray Plate RCA Branded Vacuum Tube

$275.00


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

$191.60


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

$59.99


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

$67.95


Matched Pair TungSol 6550 Solid Gray Plate Vacuum Tubes #4

$149.99


3 Vintage matching GE 6550 6550A metal base tubes stereo amplifier TV7 test good

$41.00


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

$138.55


2 truly matched same dated 1965 tungsol 3 hole gray plate 6550 tubes

$149.99


vintage 6550 tung sol tubes pair

$100.00


2 excellent welded plate rca 6550 tubes #40014

$99.99


(2) Tung Sol 6550 Tubes - Matched Pair - Tested 100! - Made in USA!

$50.00


Tung Sol 6550 Tube - Tested 105! - Made in USA!

$33.00


1 1973 TUNGSOL 3 hole gray plate 6550 tube #40017

$39.99


2 truly matched strong same dated 1962 tungsol solid gray plate 6550 tubes

$199.99


NOS JJ Electronic OEM KT88 Tubes Valves, TESTED Matched Pair KT-88 6550 KT 88

$65.99


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

$130.00


2 Used General Electric JAN-6550A Tube,

$9.90


1 excellent welded plate sylvania 6550 tube #40015

$49.99


+++++ ELECTRON POWER TUBE TUNG-SOL 6550A ST - HICKOK tested VERY STONG +++++

$39.90


8 Svetlana 6550C vacuum tubes real world tested and guaranteed

$62.95


1 excellent strong 1963 solid gray plate 6550 tube #40016

$49.99


Gold Aero 6550 Vacuum Tubes - Matched Pair - NOS

$300.00


(2) TUNGSOL 6550 TUBES

$229.00


Unique: 1 x GEC KT88 - 6550 Brandnew Tube in Original Box

$38.06


Unique: 1 x GEC KT88 - 6550 Perfect matched Tube in Role

$10.55


+++ ELECTRON POWER TUBE GE 6550A - HICKOK tested STRONG +++

$28.90


+++ ELECTRON POWER TUBE TUNG-SOL 6550A - HICKOK tested VERY STONG +++

$18.90


+++ ELECTRON POWER TUBE GE 6550A - HICKOK tested WELL +++

$24.90


+++ ELECTRON POWER TUBE RCA 6550A - HICKOK tested STRONG +++

$18.90


6550 6L6G 45 6SN7 6SJ7 12AT7 6CA4 6X4 Premium Vintage Audio Tube Lot (MANY NOS)

$32.00


6550 EL34 6CA7 7027A 45 10 6L6G VT-52 Premium Vintage Audio Tube Lot (MANY NOS)

$19.50


Pair of Strong Vintage GE General Electric 6550A Metal Base Tubes

$179.99


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

$64.99


New Matched Quad Groove Tube 6550 Vacuum Tubes

$99.99


(1) TUNGSOL SOLID PLATE 6550 TUBES

$169.00


1 excellent real genelax gold lion kt88 / 6550 tube #4

$219.99


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

$139.39


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

$123.00


Quad Tung-Sol 6550 3 Hole Grey Plate 6550 Audio Tubes USA 1970's

$399.99


1 excellent real genelax gold lion kt88 / 6550 tube #2

$199.99


Mullard Platinum Factory Matched PAIR New NIB KT88 KT-88 6550 Tubes

$74.95