(!!!) (Best Mullard Pair) EZ80=6V4 Mullard La Radiotechnique Chartres plant France NOS "O" getter halo 1970 (64-64/40 x 2 tubes) 1% matched
(!!!) (Best Single) EZ80 Mullard France NOS "O" getter halo 1970 (64/40 and 64/40)
(!!!) (Recommended Single) EZ80 Mullard France NOS "O" getter halo 1970 (62/40 and 64/40)
(!!) (Best Mullard Pair) EZ80=6V4 Mullard La Radiotechnique Chartres plant France NOS "O" getter halo 1970 (63-64/40 x 2 tubes) 1% matched
(!) (Best Single) EZ80 Mullard UK like new "D" getter 1961 (64/40 and 66/40)
(!) (BEST VALUE PAIR) 6V4=EZ80 Haltron by Tungsram Hungary NOS 1960's (58-60/40 and 59-60/40) 1-2% section balance
(!) EZ80 GE France like new 1968 (61/40 and 62/40)
