On Sale At conservationphotography.net!

6550


6550A (3) RCA GRAY PLATE USED TESTED VACUUM TUBES (P33)

$67.00


TUNG SOL 6550 OUTPUT TUBE 1960'S 3-HOLE PLATE

$75.00


Pair of Vintage Tung Sol 6550 Power Vacuum Tubes Valves Made in USA

$130.00


New JJ Electronic OEM KT88 Tubes Valves, Matched Quad KT-88 6550 KT 88

$109.99


Set of 4 KT88 (6550) Audio Research Vacuum Tubes. Tested, used less than 50Hrs

$64.00


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

$176.14


2 original vintage 3 hole Tung-Sol 6550 tubes tested strong Harman Citation ii

$53.00


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

$119.95


Brand New Current Matched Quad Svetlana 6550 / 6550C (KT88) Reissue Vacuum Tubes

$129.59


6550 pair,used matched pair made in china.tested strong

$15.00


Matched Pairs (2 tubes) Tung Sol 6550 Reissue amp tubes, BRAND NEW

$63.47


Quad Vintage GE 6550 A Vacuum Tubes Made In USA Physical/Code Matching

$152.50


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

$112.95


Tung-Sol 6550 Amplifier Amp Tubes / Valves Lot of 4

$131.25


SOVTEK Factory Platinum Matched SEXTET 6550WE 6550 SIX tubes 24 Hr Burn-in

$159.95


NOS PAIR RCA 6550 VACUUM TUBES MATCHED GM DATE CODES 3 HOLE PLATES NEVER USED!!!

$350.00


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

$123.09


tung sol 6550 new russian re-issue matched pair

$65.00


Tung Sol 6550 KT88 Vacuum Tube New Old Stock

$200.00


Tung Sol Jan 6550 Military New Old Stock New In Box

$185.00


Electro Harmonix 6550EH Brand New

$39.95


Tung Sol 6550, Set of 2 - Beam Power Tube - NOS NIB - 1969 - Amplitrex Tested

$199.99


1 NOS NIB Matched Svetlana 6550C Winged C Audio Tube Russia 1990's

$65.00


RUBY 6550 power tubes slightly used matched pair tested strong

$70.00


MATCHED QUAD - GENALEX GOLD LION KT88 RE-ISSUE VACUUM TUBES - KT88 6550

$174.95


Tung-Sol 6550 Original Issue Tubes, Matched Pair - Tested, NOS

$350.00


SOVTEK Factory Platinum Matched PAIR TWO 6550WE 6550 tubes 24 Hr Burn-in

$57.95


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

$54.99


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

$130.50


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

$39.50


EL34 KT88 6L6 6V6 6550 Quad Vacuum Tube Amplifier Bias Match Tester Suzier T10

$50.85


VINTAGE PAIR TUNG-SOL "LESLIE" KT88 6550 ELECTRON TUBE - TEST EXCELLENT

$299.00


New Premium Select NessTone 6550 Power Tube Matched Pair - Big, Clean Warm Bass

$45.99


Electro Harmonix 6550 vaccum tubes electron tube matched pair

$45.00


Matched Quads Svetlana 6550 6550C amp tubes, BRAND NEW

$121.90


Tube KT6550 Svetlana original. made in St. Petersburg 2 pcs

$53.00


Tung Sol KT120 Cryo Matched Quad (4) - 6550 / KT88

$185.99


New Premium Select NessTone 6550 Power Tube Matched Quad - Big, Clean Warm Bass

$89.99


Mapleshade SilClear Tube Treatment for 12AX7/6SN7/EL34/6550/6922/6DJ8/12AU7/KT88

$39.99


NIB new ElectroHarmonix 6550 KT88 vacuum tube $27ea; matched pair quad available

$27.00


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

$180.00