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The best sounding audio tubes money can buy (new items listed daily)
(!!!!) (Best Overall Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (11.2/11.7ma) 1-2% section balance (Highest mA and Gm)
(!!!!) (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)
(!!!!) (Single) E83CC=12AX7 Siemens Halske Germany NOS 1976 (0.7/0.9ma and Gm=1400/1600)
(!!!!) (Best Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/2.2ma and 2.0/2.1ma)
(!!!!) (Recommended Pair) 30 Sylvania NOS 1940's (3.0ma and 3.1ma)
UV-202 Radiotron "brass base" and tipped NOS original box 1920 era (45ma) (very rare)
(!!!!) (Best Pair 1930's) 30 Sylvania engraved base NOS 1930's (3.2ma and 3.4ma) (same Gm)
(!!!!) (Best Pair) CX-301A Cunningham and UX-201A RCA Balloon NOS 1930 era (3.1ma and 3.5ma)
(SINGLE) 2050 GE NOS (6 in stock) (BEST PRICE)
(!!!) (Best Pair) 26 Sylvania branded Zenith black plate NOS 1946 (5.4ma and 5.6ma) (rare)
(!!!!) (Best Pair) 6L6GC GE NOS and like new 1980 (68.7ma and 69.0ma)
(!!) (BEST PAIR) 20LF6 Holland NOS 1971 in Zenith and RCA boxes (101/60 and 102/60)
(!!!!) (Best Pair #3) 5670W GE NOS 1986 (8.4/7.2ma and 8.0/7.4ma) (Same Gm) 1-2% matched
(!!) (Best Pair) 412A Western Electric NOS "D" getter halo 1959 (51-52/40 x 2 tubes)
(!!!) (Best Single #3) 5998A Sylvania JAN NOS 1980 (124/119mA)
(!!!!) (Best Overall Single) CV4004=12AX7 Mullard box plates NOS 1971-1972 (Gm=1600/1700) (1.3/1.5ma)