(!!!!!) (2ND BEST PAIR) 12AU7=ECC82 Telefunken Germany smooth plates NOS 1961-1965 1-5% matched (10.5/12.0ma and 12.2/10.2ma)
(!!!!!) (BEST OVERALL PAIR) 12AU7=ECC82 Telefunken Germany smooth plates NOS 1963 1-5% matched (9.4/9.4ma and 9.5/9.0ma)
(!!!!!) (Best Pair) JAN-5687WA GE black plates like new 1968 (33.5/36.5ma and 35.0/34.2ma) (Highest Ma and Gm)
(!!!!!) (Holland Single) 12AU7 Pope Holland NOS 1971 dimpled disc halo (12/13.4ma)
(!!!!!) (Recommended Pair) E80CF=7643 Valvo branded Philips Miniwatt SQ NOS 1963 (PREMIUM 6BL8 SUB) (Tuners)
(!!!!!) (Recommended Single) M8137=CV4004=12AX7 Mullard branded Philips box plates NOS 1966 (Gm=1500/1400 and 1.0/0.8mA)
(!!!!) (Best Mullard Single) 12AU7A Amperex by Mullard UK NOS ribbed plates 1974 (10.6/11.6ma) (DAC, linestage)
(!!!!) (Best Overall Single) GZ37 Mullard UK NOS 1966 (52/40 and 52/40) 1% section balance
(!!!!) (Best Pair #2) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (9.5/9.2ma and 10/9.6ma) 1-3% matched (close Gm)
(!!!!) (Best Pair #3) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (10.3/11.0ma and 10.8/10.2ma) 1-5% matched
(!!!!) (Best Pair #3) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (11.6/12.2ma and 11.2/10.5ma)
(!!!!) (Best Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/2.2ma and 2.0/2.1ma)
(!!!!) (Best Pair 1966) CV378=GZ37 Mullard NOS 1966 (51-51/40 x 2 tubes) 1% matched
(!!!!) (BEST PAIR) 5R4GYB RCA and RCA branded Westinghouse NOS 1961-1970 (50-52/40 and 50-53/40)
(!!!!) (Best Pair) CV378=GZ37 Mullard NOS 1966 (50-51/40 x 2 tubes) 1% matched
(!!!!) (Best Pair) GB-6005 Sylvania Gold Brand Gold Pins NOS coated glass 1960's (47ma and 48ma) (best sound)
(!!!!) (Best Single 1975) GZ34 Mullard UK NOS 1975 (59/40 and 60/40)
(!!!!) (Best Single) 12AU7=ECC82 Mullard UK ribbed plates NOS 1972 (12.2/13.6ma) (same Gm) (smooth rich sound)
(!!!!) (Best Single) 12AX7WA Sylvania NOS 1970's (Gm=3000/3100 and 2.5/2.5ma)
(!!!!) (Best Single) 5692 CBS Hytron Brown base NOS 1957 (9.4/9.0ma) (same Gm)
