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(!!!!) (Best Overall Quad) 6106 Bendix 1950's rebranded 5Y3WGTA Heintz & Kaufman NOS (matched quad) 1-2% matched
(!!!!) (Best Overall Quad) 6106 Bendix 1950's rebranded 5Y3WGTA Heintz & Kaufman NOS (matched quad) 1-3% matched
(!!!!) (Best Pair #1) EL34 Svetlana SED Russian NEW 2003 (88ma and 87.5ma)
(!!!!) (Best Pair #2) EL34 Svetlana SED Russian NEW 2003 (81.5ma and 81.8ma)
(!!!!) (Best Pair #3) EL34 Svetlana SED Russian NEW 2003 (85ma and 82.5ma)
(!!!!) (Best Pair #4) EL34 Svetlana SED Russian used/good 1997 (77ma and 78.5ma)
(!!!!) (Best Quad #1) 6SH7 GE metal can NOS 1976 (10.6, 10.6, 10.4, 10.5mA)
(!!!) (Best Quad) 6V6 GE metal can NOS 1976 (38, 38, 38.5, 39mA)
(!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.6/1.6/1.6/1.5ma) 1-2% matched
(!!) (Best Quad #2) 6SH7 GE metal can NOS 1976 (8.6, 9, 9, 9mA)
(READ REVIEW) 6SH7 GE metal can NOS (10 tubes for $34.99)