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(!!!!!) (Best sound for the money) GZ34 Trigon Japan NOS 1970's (60/40 x 4 sections) 1% matched (LS300, Dynaco, Latino, Scott, Marshall, Fender, Cary)
(!!!!) (Best Value Single) GZ34 Mullard NOS rebranded Tungsram NOS 1972 (54/40 and 60/40)
(!!!) (Best Value Pair) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (60-60/40 x 2 tubes) 1% matched (LS300, Dynaco, Latino, Scott, Marshall, Fender, Cary)
(!!!) (Holland 1958) GZ34=5AR4 Valvo Holland used/strong 1958 (56/40 and 56/40) 1% section balance (f31 series)
(!!!) (READ REVIEW) GZ34 Mullard UK shield logo NOS 1962 (59/40 and 59/40)
(!) (READ REVIEW) CV1377=GZ34 Mullard Blackburn UK NOS 1976
(!) (READ REVIEW) GZ34 Mullard UK shield logo NOS 1962
(!) (READ REVIEW) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (59/40 and 59/40 x 2 tubes)