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(!!!!!) (Best GZ34) GZ34 Teonex by Mullard UK fat brown base 1959 (58/40 and 58/40) (f31 series) (similar to metal base)
(!!!!!) (Best Overall Pair) EL34 Mullard UK XF1 NOS 1959-1961 double "O-O" getter halos (83ma and 80ma) (1st version after metal base) (very rare)
(!!!!!) (Best Overall Single) CK-5687WB Raytheon black plates NOS 1960's (40.5ma/42ma) (Audio Note, Modwright, Manley) Highest mA and Gm
(!!!!!) (Best Pair #1) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (10.2/11.5ma and 10.2/11.2ma) 1-3% matched (close Gm) (similar sound to RCA) (rare)
(!!!!!) (Best Pair #1B) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (11.6/10.8ma and 11.3/11.6ma) 1-3% matched (close Gm) (similar sound to RCA) (rare)
(!!!!!) (Best Pair #3) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (12.6/11ma and 12.8/10.5ma) (close Gm) (similar sound to RCA) (rare) (Copy)
(!!!!!) (Best Pair #4) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (16/12ma and 13.0/12.9ma) (close Gm) (similar sound to RCA) (rare)
(!!!!!) (Best Pair #5) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (8.8/9.8ma and 8.8/9.3ma) 1-3% matched (similar sound to RCA) (rare) (McIntosh, VTL, Manley, Quicksilver)
(!!!!!) (BEST PAIR 1961) 12AU7=ECC82 Mullard UK ribbed plates NOS 1961 same date codes (9.0/8.8ma and 9.3/9.2ma) (same Gm) 1-3% matched
(!!!!!) (BEST PAIR 1963) 12AU7=ECC82 Mullard UK ribbed plates NOS 1963 same date codes (9.5/8.6ma and 9.0/8.6ma) (close Gm) 1-3% matched
(!!!!!) (Best Value 1961) GZ34 Mullard UK shield logo fat base 1961 low hours/like new (53/40 and 55/40) (f31 series)
(!!!!!) (Best Value Pair) 6SN7GTB GE NOS 1964-1965 same build (6.4/7.0ma and 6.6/7.6ma)
(!!!!!) (Best Value Pair) GZ34=5AR4 Mullard UK branded RCA NOS 1970 (f32 series) (56-57/40 and 56-58/40)
(!!!!!) (PAIR 1961-1962) 12AU7=ECC82 Mullard BVA UK ribbed plates NOS 1961-1962 (10/8.6ma and 10/8.8ma) (close Gm) 1-3% matched
(!!!!!) (Recommended Pair) 5U4GB HYTRON NOS 1960 "O" getter halos (56-58/40 and 57-58/40)
(!!!!!) (Recommended Pair) 5U4GB HYTRON NOS 1960 "O" getter halos (60-64/40 and 60-66/40)
(!!!!!) (Recommended Pair) E80CF=7643 Valvo branded Philips Miniwatt SQ NOS 1963 (PREMIUM 6BL8 SUB) (Tuners)
(!!!!!) (Recommended Pair) JAN-CTL6SL7WGT Tungsol NOS brown base gray ribbed plates 1961-1965 (2.1/2.2ma and 2.1/2.3ma) (low noise - very smooth sound) (phono grade)
(!!!!!) (Single) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (9.8/14.2ma) (similar sound to RCA) (McIntosh, VTL, Manley, Quicksilver)
(!!!!) (Best 5V4G Single) 5V4G RCA black plates NOS 1940's (58/40 and 58/40) 1% section balance (2nd best to GZ32 Mullard)
