(!!!!!) (Best Overall Single) GZ34 Mullard Blackburn UK rebranded Siemens NOS 1972 (60/40 and 60/40) (Cary, Matchless, Marshall, Fender, Modwright)
(!!!!!) (Best Overall Single) GZ34 Mullard England branded Philips NOS 1975 (60/40 and 61/40) (Cary, Dynaco, Bob Latino, Modwright, Woo)
(!!!!!) (BEST VALUE GZ34) GZ34 Mullard branded Philips NOS 1979 (58/40 and 58/40) (Latino, Cary, Modwright, guitar amps)
(!!!!!) (Recommendd Pair) GZ34 Mullard rebranded Raytheon NOS 1974 (60/40 x 4 sections) 1% matched (LS300, Dynaco, Latino, Scott, Marshall, Fender, Cary)
(!!!!) (Best Holland Single) GZ34=5AR4 Siemens Holland NOS (f33-L2H1=1962) Belgium plant (58/40 and 58/40)
(!!!!) (Best Value Single) GZ34 Adzam Holland used/tests like new double "D" getter halos 1962 (57/40 and 60/40) (Modwright, Cary, Line Magnetic, Woo, Matchless)
(!!!!) (Best Value Single) GZ34 Miniwatt Dario Holland NOS double "D" getter halos 1962 faded printing (59/40 and 59/40) (Modwright, Cary, Line Magnetic, Woo, Matchless)
(!!!!) (Recommended Single) GZ34=5AR4 Valvo Holland NOS (f33-L2D=1962) Belgium plant (58/40 and 60/40)
(!!) (BEST VALUE) GZ34=5AR4 Mullard NOS 1969 misbranded "GZ33 Bentley Acoustic" in white box (58/40 and 58/40)
(!!) GZ34 Mullard branded Philips NOS 1970 (60/40 and 62/40)
(Best Value Pair) 5AR4=GZ34 China NOS 1980's - 1990's (59-60/40 and 59-62/40)
(Best Value) 5AR4=GZ34 Chelmer made in China like new 1990's (58/40 and 60/40)
GZ34 Mullard NOS rebranded ADZAM 1970 (62/40 and 62/40)
GZ34 Mullard NOS rebranded Philips 1975 (60/40 and 60/40)
GZ34 Mullard rebranded Philips Kuhl-Tube cryo NOS 1970 faded printing (58/40 and 58/40)
