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MATCHED QUAD (4) GE 6550 (KT88) 3 Disc Getter VINTAGE Power VACUUM TUBES A.8159
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Matched Quad NOS branded “McIntosh” KT88 Tubes, Brand NEW !
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General Electric 6550A RARE Matched Pair NOS/NIB tubes Test Completed Working
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2 Matched pair of GE 6550A NOS NIB Vacuum Tubes
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Brand New Factory Matched Quad 4x Sovtek 6550WE Vacuum Tubes
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1 pair Tung-Sol 6550 Black Plate tube USA 1950s my last pair (322HT3)
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RAM 6550 Matched Pair Output Tubes TEST STRONG SUPERB1
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QUAD / 4 GE General Electric 6550A / 6550 Vacuum Tubes & Boxes TV-7 Tested
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Matched Quad Philips ECG - Sylvania 6550 Tubes / KT1
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Matched Quad Philips ECG - Sylvania 6550 Tubes / KT2
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Pair Tung Sol 6550 tubes - USA 3 hole gray plate #408-3
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Two 6550 Tubes - Marked "Amperex 6550 Made in USA"
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Matched Quad Svetlana SV6550C KT88 6550 tubes Tested NEW
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Tung-Sol 6550 Electron Tubes, matching pair
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Matched Pair RCA - Tung Sol 6550 Tubes / No Guide Pins / KT4
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Factory Platinum Match Quad Svetlana 6550 tubes *4pcs
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2 - Tung Sol 6550 Tubes / Solid Gray Plates / KT1
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Pair NOS NIB GE 6550A Tubes Amplitrex Tested 100%
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Brand New Current Matched Quad Svetlana 6550 / 6550C (KT88) Reissue Vacuum Tubes
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RARE Matched Pair NOS/NIB General Electric 6550A tubes Triple Getter No Reserve!
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Matched Pairs GE 6550A NOS NIB Beam Power Tubes. Test NEW (over 60) on TV7-D/U.
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Factory Platinum Matched Quad Svetlana 6550 6550C tubes, BRAND NEW in Box !
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(2) BOGEN & RCA 6550 Vacuum Tubes Black Plate
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Svetlana 6550C Vacuum Tubes NOS/NIB Tested and Matched Pair
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Electro-Harmonix 6550 Matched Power Tubes Medium Sextet
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GE 6550 Vacuum tubes..............Matched pair
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Tung Sol USA 6550 Solid Grey Plate OOO Getter Tube Amplitrex Tested Strong
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Tung-Sol 6550 Audio Vacuum Tube - 1968 Three Hole Plate - Made in the USA
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4 RCA - Sylvania 6550 Tubes / 78.30 / KT3
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2 Tung Sol 6550 Tubes / 1 Missing Guide Pin / KT8
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6550 Vacuum Tube -NOS/NIB- From SovTek !!!
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Sovtek 6550WE Power Tubes - Matched Duet
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Electro-Harmonix 6550 Matched Power Tubes Medium Sextet
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Two 6550 Tubes - Marked "Amperex 6550 Made in USA"
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Sovtek 6550WE Matched Quad set of tubes
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4 NOS GE General Electric USA National Gold 6550A 6550 Vacuum tubes Matched
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Vintage Westinghouse USA GE General Electric 6550 Tubes Pair X2 Tube Maxi Tested
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Matched Quad Sylvania 6550 Vacuum Tubes / KT4
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Brand New Plate Current Matched Quad (4) Sovtek 6550WE Vacuum Tubes
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Matched Pair Made in Russia Tung-Sol 6550 Tested Strong
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Date Matched Pair of Tung-Sol 6550 Vacuum Tubes Strong Testing!
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Elegant edition NOS Match Quad ( 4pcs ) 90'S Shuguang 6550 ST tubes OEM products
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New in Box: ShuGuang 6550A-98 Electron Power Tubes
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Pair Of Vintage International C KT88 6550 Vacuum Tubes USA TV7 DU Strong!
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Matched Quad Tung Sol 6550 3 Hole Plate OOO Getter Amplitrex Strong SAME DATES
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4 GE - General Electric 6550A Tubes / KT2
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Vintage General Electric GE 6550 power Tube- two total- Tested Good
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Matched Pair of Sylvania 6550 Vacuum Tubes / KT2
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2 NOS GE General Electric USA National Gold 6550A 6550 Vacuum tubes Matched #2
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6 NOS GE General Electric USA National Gold 6550A 6550 Vacuum tubes Matched
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4 GE - General Electric 6550A Tubes / KT1
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GE 6550 Vacuum tubes.... Groove Tube Label..........Matched pair
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4 National Gold by GE - General Electric 6550A Tubes / KT4
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Vtg 6550 TUNG-SOL Vacuum Tube Guaranteed Russia
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Matched Pair of Sylvania 6550 Vacuum Tubes / KT5
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Matched Pair Sylvania - Tung Sol 6550 Tubes / KT2
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2 GE - General Electric 6550A Tubes / Welded Plates / No Guide Pins / KT3
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NOS Tung Sol 6550 Grey 3 Hole Plate OOO Getter Amplitrex Tested
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MATCHED PAIR OF AUDIO CLASSICS 6550 STOCK VACUUM TUBES (BJR1011)
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NOS NIB TungSol 6550 Vacuum Tube Branded For RCA 1964 Date
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Brand New Plate Current Matched Quad 4x Sovtek 6550WE Vacuum Tubes
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Brand New Plate Current Matched Quad 4x Sovtek 6550 Vacuum Tubes
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Tung-Sol 6550 Power Tubes - Matched Quartet
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6550 TUNG-SOL Type 2 - 4th Gen Halo Getter Three Hole Matched Pair USA Tubes
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Top Matched Pair Vintage TUNG-SOL 6550 Audio Tubes / NOS / AT1000 / KT88
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Quad of Sylvania 6550 Tubes Tested and Matched (b)
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Tung Sol / Tung-Sol 6550 Tube Made in USA. #1
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RCA GE 6550 DUAL DISC GETTER POWER VACUUM TUBE AMPLITREX TESTED 87% gm
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Vintage General Electric GE 6550 power Tube- Tested Good - With Box
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Used RCA 6550 Triple Getter Grey Plates Serious Tubes D267
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Brand New Plate Current Matched Pair 2x Sovtek 6550WE Vacuum Tubes
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Sovtek 6550 WE Vacuum tubes......Matched pair....NOS...Double Halos
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GE 6550A Vacuum Tubes (5) Amplitrex Matched to 3% Gm 98% - 101% Beautiful!
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Vintage General Electric GE 6550 power Tube- Tested Good - With Box
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(Sweet edition)Platinum Factory Match QUAD 4pcs Tung-sol 6550 tubes
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Sweet Edition Ⅱ Platinum Match Quad Svetlana 6550 tubes
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Matched Quad of NOS - Audio Research KT88 Tubes -- KT1
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6550 Sylvania, Vacuum Tubes, NOS Matched pair, Tested. SALE IS FOR THE PAIR
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Vintage New Old Stock RCA 6550 Vacuum Tube TV7 Tested
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TUNG - SOL 6550 vacuum tube set of 8, made in Russia, matched pair, 4 sets
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TELEFUNKEN 6550-TK Black Diamond Series Vacuum Tube
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