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Solid State Rectifier - Yellow Jacket® YJR, For 5AR4, 5U4, 5Y3
The YJR is a direct plug-in replacement adapter for use in most amplifiers that use 5AR4/GZ34, 5U4, 5Y3 or similar full-wave rectifier tubes. The YJR converts your amp's vacuum tube rectifier to a solid state rectifier, reducing tube sag for a tighter sound and feel. The tube rectifier can easily be swapped back in when sag is desired. This Yellow Jacket® is a solid state device and as such does not require vacuum tubes.
- Converts most audio amplifiers which use a vacuum tube rectifier 5AR4/GZ34, 5U4 or 5Y3 to a solid state device.
- Safe for all common amplifiers and transformers.
All Yellow Jacket® converters have a one year warranty against manufacturer defects.
SKU:
P-YJR
Item ID:
003636
UPC/EAN:
609722126502
Brand:
Yellow Jacket
| Item Diameter | 1.301 in. | |
| Item Height | 0.82 in. |
| Packaging Dimensions | 4.75 in. × 3.5 in. × 1.315 in. | |
| Weight (Packaging) | 0.266 lbs. |
 YJR Instruction Sheet | All Models |
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Questions and Answers
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1 answers
I hear that using this instead of a tube will give me less sag?
Asked by Anonymous on August 27th, 2015.
August 27th, 2015
Staff MemberTop Contributor
Using a solid state rectifier will stiffen up your power supply a bit and reduce sag.
1 answers
This have more tube pins than my rectifier tube. Will this work?
Asked by Anonymous on October 21st, 2016.
As long as you are replacing a 5AR4/GZ34, 5U4 or 5Y3 rectifier tube then this will work. It may have more pins that your tube but the extra pins are not connected to anything.
1 answers
Do you have solid state replacement for 5y4g?
Asked by Anonymous on November 10th, 2017.
We do not have a replacement for the 5Y4G.
1 answers
What is the difference between this one and SKU: T-SSR01?
Asked by Anonymous on November 28th, 2017.
These are the same thing but made but two different manufacturers.
1 answers
Will this replace a 5 pin 84 tube?
Asked by Anonymous on January 10th, 2018.
January 10th, 2018
Staff Member
Unfortunately, this is not an acceptable replacement for a 84 tube.
1 answers
Hello -- Pretty sure my recently purchase ss yellowjackets rectifier has failed. What can I do about warranty?
Asked by Anonymous on March 16th, 2018.
Please contact customer service at:
[email protected]
1 answers
Will the YJR replace a 5U4GB rectifier tube?
Asked by Anonymous on February 22nd, 2020.
February 24th, 2020
Staff Member
Yes, the 5U4 tube is included in the list of tubes this will replace and the GB simply indicates a standard 5U4 with a glass bottle.
1 answers
Have a 1970's Silverface Champ with 5y3 rectifier tube .. how much of a voltage drop "sag" does this YJR Solid State Rectifier produce In comparison to Webers WZ3-Octal Copper Cap Solid State Rectifier's 58v drop ? Thank you very much for your return , Ron .
Asked by Anonymous on January 7th, 2022.
January 7th, 2022
Staff Member
The YJR is a silicon diode rectifier and does not produce voltage sag.
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Product Reviews
A very nice alternative to the stock rectifier tube in my silver face Princeton Reverb.
The Yellow Jacket isn't necessarily better in *all* situations -- at lower gain it doesn't really improve my tone or the response of my amp. Where it shines, though.. is when I crank up the amp -- it smooths the rough edges of a hard pick attack and transitions into a nice sustain. At higher amp gain, the Yellowjacket makes my Princeton sound a bit more refined as well as easier to record.
For gigging this is probably a no brainer and I wouldn't think twice about using it. Solid state adds an element reliability and I imagine the smoother high gain attack probably makes things a bit easier on the sound guy/girl.
Great for tightening up the bottom end of a Tweed.
Works great. Easy drop in replacement. Installed it in my 59 Bassman Ltd. Greatly improves the attack of the amp. I wasn’t big on the tube sag. Increases the amp output as well. I feel it made the amp more responsive and I installed this as part of a full re-tube and re-bias. Increases the plate voltage by about 10 volts. Seems like a well made unit.
I put this in my 50 year old Harmony 410A amplifier. I wasn't 100% sure how well it would work but it works PERFECTLY. Now my first amplifier from childhood that ended back in my hands after many many years is functioning perfectly.