We test our tubes on High-End Soviet Tube Tester L3-3. 1 tube in 1 lot.
Item Tag: Rectifier Tubes
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(1) General Electric GE 5AR4 GZ34 Rectifier Tube Copper Plates Tests Strong
(1) General Electric GE 5AR4 GZ34 Full Wave Rectifier Tube with Copper Plates. Tube tests at 60/58 with 40 being the minimum score for a good tube (with 65% life remaining).
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GZ34 rectifier tube audio VALVO / MULLARD ( AMPEREX ) – xf2 / oo – GZ 34 – 1964
Made by Mullard in England for Valvo in Germany. RARE and EARLY tube. With f32 / B code and oo getter. Made in the 1960s. Tube shows f32 / B4A3 code – made in January 1964. With original box. See pictures.
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Philips GZ34 5AR4 f31 Double-D Getters Audio Rectifier Tube (balanced)
Audio Rectifier Tubes (5Y3, 5U4, GZ34, etc). The minimum on our TV-7 is 40, and this one tests nicely at 57.2 and 57.5! Dan Nelson is the guru of TV-7 testers, so you can rest assured that you’re getting dependable test results.
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Mullard GZ34 5AR4 Vintage f31 1959 Fat Base Audio Rectifier Tube (balanced)
Audio Rectifier Tubes (5Y3, 5U4, GZ34, etc). This is a very nice f31 Mullard 5AR4/GZ34 tube with a 1959 date code of “B9B”. The minimum on our TV-7 is 40, and this one tests nicely at 55.6 and 55.4.
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Matched Pair Mullard 5AR4 GZ34 FAT BASE Rectifier Tubes Amplitrex Tested NOS F31
Both tested NOS and matched using an Amplitrex AT1000 tube tester as photographed.