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(!!!!!) (Best Pair #1) 12AU7=ECC82 Mullard UK ribbed plates NOS 1974 same date codes (9.2/9.1ma and 9.2/10.2ma) (Rogue, Hovland, Audio Note, Prima Luna) (Same Gm)
(!!!!!) (Best Pair #3) 12AU7=ECC82 Mullard UK ribbed plates NOS 1961-1964 (10/9.6ma and 10.8/10ma) (Rogue, Hovland, Audio Note, Prima Luna) (Close Gm)
(!!!!!) (Best Pair #3) 12AU7=ECC82 Mullard UK ribbed plates NOS 1970-1972 (11/10ma and 9.6/10.2ma) (Rogue, Hovland, Audio Note, Prima Luna) (Same Gm)
(!!!!!) (Best Pair #3) 12AU7=ECC82 Mullard UK ribbed plates NOS 1972-1976 (10.2/12.8ma and 11.2/12ma) (Rogue, Hovland, Audio Note, Prima Luna) (Close Gm)
(!!!!!) (Best Pair #3) EF86 Valvo Germany branded PHILIPS and POPE NOS 1970 (3.6ma/4.0ma)
(!!!!!) (Best Pair) ECL82=6BM8 Mullard NOS 1967-1970 (2.6/37.5ma and 2.3/34ma) 1-5% matched
(!!!!!) (Best Pair) EF86 Siemens Germany made by Valvo (Hamburg) NOS 1965 (3.4ma/3.4ma) 1-2% matched
(!!!!!) (Best Single #1) 12AU7 Mullard UK "long plates" and "O" getter 1958 NOS (10.2ma and 10.6ma) (Same Gm)
(!!!!!) (Best Single 1966) ECC83=12AX7 Mullard UK ribbed plates NOS 1966 (163 series) (1.3/1.1ma) (same Gm) (sweet sound)
(!!!!!) (Best Single) 12AX7=ECC83 Mullard UK branded Philips ribbed plates NOS 1965 (1.0/0.9ma) (163 series)
(!!!!!) (Best Single) 6V6GT GE NOS 1962 (47.5ma)
(!!!!!) (Best Single) 6V6GT GE NOS 1964 (53.6ma)
(!!!!!) (Best Single) E81CC=6201=12AT7 Philips Mullard UK SQ NOS gold pins 1974 (11.5/10.8ma) 1-5% section balance
(!!!!!) (Best Single) E81CC=6201=12AT7 Philips Mullard UK SQ NOS gold pins 1974 (9.6/10ma) 1-3% section balance
(!!!!!) (Best sound for the money) GZ34 Trigon Japan NOS 1970's (59/40 and 59/40) (LS300, Dynaco, Latino, Scott, Marshall, Fender, Cary)
(!!!!!) (Best Value Single) 6V6GTA GE NOS 1960's slightly tilted plate and glass (41.5ma)
(!!!!!) (Best Value Single) EZ81 Philips Miniwatt by Mullard Blackburn UK "D" getter low hours/tests like new 1962 (56/40 and 56/40) 1% section balance
(!!!!!) (Best Value Single) EZ81 Philips Miniwatt by Mullard Blackburn UK "D" getter used/tests like new 1962 (58/40 and 58/40) 1% section balance
(!!!!!) (Best Value) EZ81 Philips Miniwatt by Mullard Blackburn UK "O" getter used/tests like new 1965 (58/40 and 58/40) 1% section balance
(!!!!!) (Mullard 1969) 12AX7=ECC83 Mullard UK ribbed plates NOS 1969 (1.1/1.2ma) (same Gm)
