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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 Single #1) 12AU7 Mullard UK "long plates" and "O" getter 1958 NOS (10.2ma and 10.6ma) (Same Gm)
(!!!!!) (Best Single 1969) ECC83=12AX7 Mullard UK ribbed plates NOS 1969 (163 series) (1.3/1.6ma) (sweet sound)
(!!!!!) (Best Single) 6V6GT GE NOS 1947 (41.5ma)
(!!!!!) (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 (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) 12AX7=ECC83 Mullard UK branded Philips ribbed plates NOS 1965 (1.0/0.9ma) (163 series)
(!!!!!) (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
(!!!!!) (Recommended Single) CV4035=M8214=12AX7 Mullard England box plates NOS flying leads 1961 (solder leads into ckt)
(!!!!!) (Recommended Single) M8137=CV4004=12AX7 Mullard branded Philips box plates NOS 1966 (Gm=1500/1400 and 1.0/0.8mA)
