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The best sounding audio tubes money can buy (new items listed daily)
T52P1 Tektronix CRT 1955 era for 570 Tektronix Curve Tracer (rare)
(!!!!) (Best Pair) 6BQ7A RCA black plates NOS 1967 same date codes (15/14.5ma and 13.5/16.5ma)
(!!) (3rd Best Quad) 6CL6 RCA FAA NOS 1963 (26, 27, 27.5, 28.5ma)
(!!) (Best Quad) 6CL6 RCA FAA NOS 1963 (35.5, 35.6, 36.2, 37.6ma)
(!!) (2nd Best Quad) 6CL6 RCA FAA NOS 1963 (31.6, 33, 33, 33ma)
(!!!) (Single) EC92=6AB4 Siemens Halske Germany branded Mullard 1964 (8.4ma) (mic)
(!!!) (Best Single) EC92=6AB4 Siemens Halske Germany branded Mullard NOS 1964 (10ma) (mic)
(!!!) (Best Pair) 864=VT-24 Hytron USA NOS 1940's (3.1ma and 3.1ma)
(!!!) (Best Pair) 864=VT-24 Hytron USA NOS 1940's (3.2ma and 3.2ma)
(!!!!) (Recommended Pair) 6L6GT Russian branded Raytheon NOS 1970's in white boxes (83ma and 84.5ma)
(!!!) (Recommended Pair) JLRV-6J6WA GE Canada NOS 1960's (7.3/6.6ma and 6.8/7.5ma)
(!!!!) (Recommended Pair 1970's) 417A Western Electric NOS 1973-1977 (27ma and 31.2ma)
(!!!!!) (Best Overall Pair) 311B Western Electric NOS 1972-1974 (32ma and 33.4ma)
(!!!!!) (Best Overall Pair) 311B Western Electric NOS 1972-1974 (36.2ma and 37.8ma)
(!!!!) (Best Value Single) JAN-CEA-5852=6X5GT Bendix NOS 1953 (63/40 and 66/40) (Best Audio Grade 6X5GT)
(!!!!!) (Best Value) EZ81 Philips Miniwatt by Mullard Blackburn UK "O" getter used/tests like new 1965 (58/40 and 58/40) 1% section balance
(!!) (Best Pair 1981) 412A Western Electric NOS "O" getter halo 1981 (53-53/40 x 2 tubes)
(!!) (Pair) EL822 Mullard black plate NOS 1973-1974 (40ma and 41ma)
(!!) (Recommended Pair) 8417 Sylvania NOS 1970 era same date codes (109ma and 104.5ma)
(!!!!) (Recommended Pair) 30 Sylvania NOS 1940's (3.0ma and 3.1ma)