(!!!!) (Best Value Pair) 12AX7=ECC83 Telefunken Germany <> bottom smooth plates used/good 1960's (0.8/0.8ma and 0.8/1.0ma)
(!!!!) (Best Value Single) 12AU7=ECC82 Mullard UK ribbed plates like new 1965 (10/12.8ma) (smooth rich sound)
(!!!!) (Best Value Single) 12AX7 Telefunken Germany <> bottom smooth plates branded GAP/R Computor tube like new 1964 (Gm=1700/1600 and 1.1/1.0ma)
(!!!!) (Best Value Single) 12AX7 Telefunken Germany <> bottom smooth plates branded GAP/R Computor tube like new 1964 (Gm=1700/2000 and 1.1/1.5ma)
(!!!!) (Best Value Single) 12AX7 Telefunken Germany smooth plates branded DYNACO like new 1964 (Gm=1600/1800 and 0.9/1.4ma)
(!!!!) (Best Value Single) 6922=E88CC Penta Labs Hungary used/like new 1980 era (13.8/15.8ma)
(!!!!) (Best Value Single) ECC803S=12AX7 Telefunken Ulm Germany <> bottom NOS 1961 1-2% section balance (Gm=1550/1600) (1.1/1.1ma)
(!!!!) (Good Value Pair) 6SN7GTB GE NOS and like new 1960-1964 (7.0/7.8ma and 7.0/6.8ma)
(!!!!) (microphonic single) 6922=E88CC Siemens Halske Germany gray shield NOS 1965 (A0 Series=1st series) (15.2/15.8ma)
(!!!!) (Pair) JAN-6C4WA Sylvania NOS 1975 (7.8ma and 8.6ma)
(!!!!) (Recommended Pair) 12AU7A=ECC82 Mullard rebranded "GE" and "Zenith" ribbed plates NOS 1966 (9.8/11ma and 10.4/10.5ma) (smooth rich sound)
(!!!!) (Recommended Single) 12AU7=ECC82 Mullard UK ribbed plates NOS 1970 (10.4/8.6ma)(smooth rich sound)
(!!!!) (Recommended Single) CV378=GZ37 Mullard UK NOS 1967 (52/40 and 54/40) 1-3% section balance
(!!!!) (Recommended Single) GZ37 Mullard UK NOS 1967 (50/40 and 50/40)
(!!!!) (Recommended Single) JAN-7308 Raytheon NOS 1968 (10.4/15.2ma)
(!!!!) (Recommended Single) JAN-7308 Raytheon NOS 1968 (12.5/16.8ma)
(!!!!) (Single) 5692 RCA RED BASE black plates used/good 1953 (7/8ma) (Schiit Saga+)
(!!!!) (Single) 6922=E88CC Penta Labs Hungary used/good 1980 era (10/15ma)
(!!!!) (Single) 6DJ8 Philips Holland low hours/like new 1967 (13.6/14.4ma) (sonically the same as Bugle Boy)
(!!!) (Best Single 1963) JG-5751 GE double mica gray plates NOS 1963 (2.7/2.7ma) (1-2% section balance)
