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Platinum Grade tubes,, 6550 Electro Harmonix Matched Quad ..
SVETLANA 6550 WINGED C %105 emmisions and %104 GM specs. Perfect m..
6550C SOVTEK MATCHED QUAD ..
Platinum Grade tubes, 6550C TUNGSOL - Matched Quad ..
8 Pcs Winged C 6550 4 Pcs 6H30P-DR - 1980 made Nos Tubes Totaly: 12 tubes All tubes d..
SVETLANA 6550C - Matched Quad ..
Matched Quad Set ..
If yuo need more tubes please contact me ..
Platinum Grade tubes,, 6550 Electro Harmonix Matched Quad ..
$230.00SVETLANA 6550 WINGED C %105 emmisions and %104 GM specs. Perfect m..
$440.008 Pcs Winged C 6550 4 Pcs 6H30P-DR - 1980 made Nos Tubes Totaly: 12 tubes All tubes d..
$899.00