(!!!!!) (Best Overall GZ34) 5AR4/GZ34 Mullard UK Fat Base NOS 1960 (f31 series) (58/40 and 58/40) 1% section balance
(!!!!!) (Best Single 1963) GZ34 Mullard Blackburn UK rebranded Philips Miniwatt NOS 1963 (60/40 and 60/40)
(!!!!!) (Best Single 1970's) CV1377=GZ34 Mullard Blackburn UK NOS 1976 (58/40 and 58/40)
(!!!!!) (Best Single) GZ34 Mullard Blackburn UK branded Tronal NOS 1968 (58/40 and 58/40)
(!!!!!) (Recommended Single 1965) GZ34 Mullard Blackburn UK branded Amperex 1965 (58/40 and 58/40)
(!!!!) (Best Value Single) GZ34 Mullard UK 1974 rebranded Siemens in 1978 low hours/tests like new (58/40 and 58/40)
(!!!!) (Recommended Single) GZ34 Mazda Mullard UK NOS 1975 (59/40 and 60/40)
(!!) (Best Single) GZ34 Mullard NOS rebranded Sylvania NOS 1971 (60/40 and 60/40)
(!!) (Best Sound for the money) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (59/40 and 59/40)
(!!) (Best Value Pair) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (59-60/40 and 59-60/40 x 2 tubes)
(!!) (Best Value Pair) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (59/40 and 59/40 x 2 tubes)
(!!) (BEST VALUE) GZ34 Mullard rebranded Sylvania used/like new 1969 (58/40 and 60/40)
(!!) (Best Value) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (59/40 and 59/40)
(!) (Good Value Single) GZ34=5AR4 Mullard branded Siemens used/good 1972 vertical scrapes on base (56/40 and 56/40)
(!) (Good Value Single) GZ34=5AR4 Mullard brown base used/good 1967 (56/40 and 56/40)
(!) (Good Value Single) GZ34=5AR4 Philips Mullard used/good 1973 (58/40 and 60/40)
(!) (Good Value Single) GZ34=5AR4 Philips Mullard used/good 1975 (56/40 and 56/40)
(Best Value) 5AR4=GZ34 China NOS 1990's (50/40 and 50/40)
