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.
SKU:
T-5AR4-JJ
Item ID:
004554
UPC/EAN:
844632064074
JJ Electronics Part Number:
GZ34S - 5AR4
Brand:
JJ Electronics
Type:
RoHS Compliant
| 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.
February 15th, 2017
Staff Member
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.
September 28th, 2017
Staff Member
According to our tube substitution handbook, the 5AR4 is not a substitute for the 5U4GB.
Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
Product Reviews
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
Tube looks great
Original GZ34s are too expensive. This remake seems to do quite well in an older Fender amplifier replacing a 5Y3.
I tried two of these tubes and one failed after 30 minutes, the second (a replacement) immediately developed a cathode to filament short power was applied.
Vintage, used 5V4 and 5AR4 tubes are running reliably in this transmitter, however.
I would suggest avoiding JJ brand tubes, it has been very frustrating and an
expensive lesson, with all of the return postage, and loss of the tubes.
Bought a JJ 5AR4 for a Heathkit AA-111 amplifier that I'm restoring/updating.
It's working well and I decided to pick up a couple more for spares. Hard to beat the price!
Excellent choice for my vintage Princeton Reverb
Great service and communication.
I purchased this tube (GZ34S) in for use in a Dynaco ST-70 I rebuilt. It worked great for about 5 weeks then I accidentally hot switched the amp and the rectifier promptly flashed over internally. Yes, this is my fault but upon examination of the tube under the magnifier the cathode and plate connections on one side were just too close to each other.
I rated the tube a 3-star for product construction, perhaps this is too harsh but darn it...
On the other hand, I am very happy this was only a $15.00 tube! I would buy it again, especially for trying out new constructions and first time power up.
I must agree with others who used these rectifiers. The price is right and you get more for your money than other choices. I am using them in a pre-amplifier that used 27's and 8 red LEDs for cathode bias and outputs to a 245 amplifier via 10K interstage transformer and I think they contribute to the smooth sound this gives me.