(!!!!) (Recommended Pair XF2) EL34 Mullard branded Telefunken XF2 single halo NOS 1968 (80.5ma and 83ma)
(!!!!) (Recommended Pair) 12AX7=ECC83 Philips and Pope Holland NOS 1965-1967 (2.1/1.8ma and 1.6/2.1ma) (Highest mA and Gm)
(!!!!) (Recommended Pair) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (10.2/11.2ma and 10.4/11.2ma) 1-2% matched
(!!!!) (Recommended Pair) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (10.4/11.4ma and 10.6/11.8ma)
(!!!!) (Recommended Pair) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.0/10.4ma and 9.4/10.0ma) 1-3% matched
(!!!!) (Recommended Pair) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.6/8.8ma and 9.4/9.0ma) 1-2% matched
(!!!!) (Recommended Pair) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.8/11ma and 10/10.9ma) 1-2% matched
(!!!!) (Recommended Pair) JAN-6189W=12AU7WA Sylvania NOS 1972-1973 (9.6/10.6ma and 9.3/10.4ma) 1-3% matched
(!!!!) (Recommended Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.6/11.3mA)
(!!!!) (Recommended Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.4/11.3mA)
(!!!!) (Recommended Single) CV491=12AU7=ECC82 Brimar UK NOS ribbed plates large "O" getter halo 1966 (9.4/10.4ma)
(!!!!) (Recommended Single) PCC88=7DJ8 Mullard branded Philips NOS 1968 (11.5/13.5ma) (Similar sound to 6DJ8 Mullard)
(!!!!) (Recommended XF2 Pair) EL34 Mullard XF2 NOS (1 tube) double halo "O-O" (1 tube) single halo "O" 1967-1968 (90.5ma and 92.8ma)
(!!!!) EL34 Mullard XF2 double halo "O-O" used/good 1963 a few heat stains on plate (72ma)
(!!!) (#1 374A) 374A Western Electric black plate used/test like new 1960's (21-25ma) (11 in stock)
(!!!) (Best Single 1963) JG-5751 GE double mica gray plates NOS 1963 (2.7/2.7ma) (1-2% section balance)
(!!!) (Best Single) E80CC=6085 Heitz and Kaufman Holland gold pins NOS 1970 (6.2ma/6.8ma)
(!!!) (Best Single) ECC82=12AU7 Philips Holland branded SONOTONE NOS 1960 (10.6/12ma)
(!!!) (Best Value Single) ECC82=12AU7 Philips Holland branded SONOTONE NOS 1960 (10.0/9.2ma)
(!!!) (Recommended Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/1.9ma and 1.9/1.8ma) (same Gm)