Vacuum Tube - 5AR4 / GZ34, JJ Electronics
The JJ Electronic GZ34 / 5AR4 is rugged rectifier at a reasonable price. JJ has a reputation for building sturdy tubes and this one is no exception. Users report that the JJ GZ34 / 5AR4 is a reliable rectifier in their Vox, Fender, and hifi amplifiers.
JJ Electronics Part Number:
GZ34S - 5AR4
|Body Height||79.0 mm|
|Filament Current (If)||1.9 A|
|Filament Voltage (Uf)||5 V|
|Item Diameter||33.3 mm|
|Item Height||93.0 mm|
|Packaging Dimensions||1.6 in. × 1.6 in. × 4.8 in.|
|Weight (Packaging)||0.1063 lbs.|
|Specification Sheet||All Models|
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Questions and Answers
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1 answers Will this rectifier tube replace a full wave rectifier In a fender pro sonic?
Asked by Anonymous on February 15th, 2017.
If your amp calls for a 5AR4/GZ34 then these should work. I would consult your manual or examine your amp to see what type of rectifier tube it has in it.
1 answers I have a Fender Vibrolux amp. Want to change the 5u4gb with a 5ar4 rectifier. Will it be ok?
Asked by Anonymous on September 23rd, 2017.
According to our tube substitution handbook, the 5AR4 is not a substitute for the 5U4GB.
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
More of a review for the great after sales service from Antique Electronic Supply, although the rectifier does work well. Bought two tubes and one tested as defective and they sent out a replacement very quickly !
My go-to rectifier for higher B+ voltage projects.
Great tube, has a slow warmup and just the right amount of sag. Good value
Works a lot better than the 5U4 tube that came with the PACO B 12 power supply. Voltages are now normal.
I use JJ power tubes in all my tube amps, so I decided I would try JJ Rectifier. It's working fine for the two weeks it's been installed. I hope it has a long productive life!
Inserted these tubes into my Prima Luna Evo 400 Pre Amp and Evo 100 DAC, this evening and from the very first track i could hear they were superior to the stock rectifier tubes in these components.
The additional space, detail and dynamics were very evident and pleasing to the ears.
Cannot recommend these tubes highly enough, even after only 2.5hrs.
Tube works great in my 5E3 Tweed Deluxe guitar amp.
Reduces sag and cleans up the tone quite a bit!
Another flashover incident. It's unfortunate JJ has not fixed this known issue. I am not hot switching and the latest 5AR4 in a 300B amp flashed.
It shorted out after 2 minutes of warm-up. Ran for a minute after cooling off then would blow a fuse every time.
I have purchased these before, they seem to work fine. Its crazy the things we do. We buy tubes to make dc instead of ac when two 20 cent diodes would do what an expensive tube does. I have found JJ tubes to work well in most situations. I bought some tubes so I will have some spares when I do need them. It could be days or years before I need them, but good to have on hand. Thank You