(!!!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.7/1.7/1.7/1.7ma) 1-2% matched
(!!!!!) (Recommended Pair) 12AU7A RCA clear tops NOS 1960 (13/10ma and 11/11.5ma)
(!!!!) (Best 6094 Quad) JAN-CEA-6094 Bendix gold pins NOS 1957 (55/57/57/58ma)
(!!!!) (Best CV4003 Quad) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.4/9.0, 8.4/9.0, 8.4/8.8, 8.4/8.8mA)
(!!!!) (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 Overall Quad) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.8/8.8, 8.8/8.8, 8.6/8.8, 8.6/9.0mA)
(!!!!) (Best Quad) 6KG6A Westinghouse JAPAN NOS original boxes 1973 (132, 133, 138, 140ma)
(!!!!) (Best Quad) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.8/9.5, 8.8/9.4, 9.0/9.3, 9.0/9.4mA) (Highest Gm 1-2% matched)
(!!!!) (Best Value Quad) 56 National Union rebranded Western Electronics NOS 1940's (5.5/5.5/5.6/5.9ma) (matched quad)
(!!!!) (Recommended Pair) EL34 Winged C SED Russian NEW 2002 (93.5/95.3ma)
(!!!!) (Recommended Pair) EL34 Winged C SED Russian NEW 2005 (97.0/99.2ma)
(!!!) (1 set of 10) 6V6 GE metal can NOS (10 for $148.88)
(!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.5/1.5/1.5/1.5ma) 1-2% matched
(!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.6/1.6/1.6/1.5ma) 1-2% matched
(!!!) (Recommended Quad) 6V6 GE metal can NOS 1976 (34.0, 34.6, 35, 35mA)
(!!!) (Recommended Quad) 6V6 GE metal can NOS 1976 (35.0, 35.2, 35.2, 35.6mA)
(!!!) (Recommended Quad) 6V6 GE metal can NOS 1976 (36.4, 36.5, 36.5, 36.6mA)
(!!!) (Recommended Quad) 6V6 Sylvania metal can NOS 1970 era (35.0, 35.4, 35.8, 35.8mA)
(!!!) (Recommended Quad) 6V6 Sylvania metal can NOS 1970 era (39.6, 39.8, 40.0, 40.2mA)
