(!!!!) (Best Overall Pair) EL34 Mullard branded Philips NOS XF4 1979 (85ma and 85.5ma)
(!!!!) (BEST XF4 Pair) EL34 Philips Mullard NOS XF4 1979 (91ma and 94ma)
(!!!!) (Recommended Pair) EL34 Mullard branded Philips and GE NOS XF4 1977-1979 (99ma and 101.5ma)
(!!!) (Best Value Pair) EL34 Mullard Philips UK NOS XF3 1974 and used/strong XF4 1975 (106.5ma and 101.8ma)
(!) (BEST VALUE) EL34 Philips Holland brown base used/good 1960 era (95.5ma)
