(!!!!!) (Best Single) PCC88=7DJ8 Siemens Germany branded Pope NOS 1979 (14.2/14.5ma)
(!!!!!) (Best Value Single) EL34 Mullard UK branded Pinnacle XF2 double halo "O-O" NOS 1965 (67ma)
(!!!!!) (Recommended Pair) ECC82=12AU7 Pope and Adzam Holland 1967-1969 (11.2/10.4ma and 11.8/11.4ma) (sweet sound)
(!!!!!) (Recommended XF2 Pair) EL34 Mullard UK XF2 single halo "O" NOS 1969-1970 (87.6ma and 90.5ma) (close Gm)
(!!!!) (Recommended Pair) 12AX7=ECC83 Philips and Pope Holland NOS 1965-1967 (2.1/1.8ma and 1.6/2.1ma) (Highest mA and Gm)
(!!!) (2nd Best Pair) ECL82=6BM8 Philips Mullard UK NOS 1969 same date codes (1.7/31.5ma and 1.7/35ma)
(!!!) 6GM8=ECC86 Amperex Globe Holland NOS 1968 (3.9/4.8ma)
(!!!) 6GM8=ECC86 Amperex Holland NOS 1975 faded printing (4.0/4.5ma)
(!!!) 6GM8=ECC86 POPE Valvo Hamburg Germany NOS 1974 (4.9/5.4ma)
(!!!) 6GM8=ECC86 SIEMENS HOLLAND NOS 1970 (3.9/4.4ma)
(!!) (BEST PAIR) 6BM8 Sylvania NOS 1970's (1.8/45ma and 1.7/49ma)
(!!) (Best Value Single) ECL82=6BM8 RCA Mexico NOS 1970's (2.1ma/28ma)
(!!) (PAIR) 6BM8 Sylvania NOS 1970's (2.3/35ma and 2.0/37ma)
(!!) (Recommended Pair) 6DJ8 Pope and Philips Holland NOS 1967-1968 (15.8/17.4ma and 16.0/18.8ma)
(!!) (Recommended Pair) ECL86=6GW8 GE and Philips by Brimar UK NOS 1968 (1.4/1.0ma and 31/33ma)
(!!) ECL82=6BM8 RCA Mexico NOS 1970's (1.8ma/28ma)
(!) (Recommended Single) 6GM8=ECC86 SIEMENS HOLLAND NOS 1970 (4.0/5.0ma)
