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Vacuum Tube - 5AR4 / GZ34, JJ Electronics

Vacuum Tube - 5AR4 / GZ34, JJ Electronics image 1
Vacuum Tube - 5AR4 / GZ34, JJ Electronics image 2
Customer image:<br/>"JJ GZ34 in a Dynaco ST70 amp"
Customer image:<br/>"Heathkit AA-111"
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Vacuum Tube - 5AR4 / GZ34, JJ Electronics image 1Vacuum Tube - 5AR4 / GZ34, JJ Electronics image 2
Customer Images:
Customer image: "JJ GZ34 in a Dynaco ST70 amp"Customer image: "Heathkit AA-111"
Item ID: 004554
List Price: $15.95
Price: $14.36
You Save: $1.59 (10%)
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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.

UPC/EAN: 844632064074
JJ Electronics Part Number: GZ34S - 5AR4

RoHS Compliant

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Specifications, Files, and Documents

Product Reviews

4.60 out of 5 based on 15 reviews


5 out of 5

Original GZ34s are too expensive. This remake seems to do quite well in an older Fender amplifier replacing a 5Y3.

- July 1st, 2020
1 out of 5

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.

- June 20th, 2020
5 out of 5

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!

- March 31st, 2020
5 out of 5

Excellent choice for my vintage Princeton Reverb

- March 8th, 2019
5 out of 5

Great service and communication.

- January 29th, 2019
3 out of 5

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.

- December 20th, 2018
5 out of 5

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.

- May 24th, 2018
5 out of 5

JJ Electronics 5AR4/GZ34. Great quality! Brought my 1965 Fender Super Reverb amp back to life.

- April 16th, 2018
5 out of 5

The JJ GZ34 has a lower voltage drop than most 5AR4 tubes. Very good value for the money.

- April 10th, 2016
5 out of 5

Works great and will buy it again.

- March 20th, 2016


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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.