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.
|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|
My Project Lists
Specifications, Files, and Documents
Questions and Answers
Click each question to see its answers.
1 answers I hear that using this instead of a tube will give me less sag?
Asked by Anonymous on August 27th, 2015.
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.
1 answers What is the difference between this one and SKU: T-SSR01?
Asked by Anonymous on November 28th, 2017.
1 answers Will this replace a 5 pin 84 tube?
Asked by Anonymous on January 10th, 2018.
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.
1 answers Will the YJR replace a 5U4GB rectifier tube?
Asked by Anonymous on February 22nd, 2020.
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.
Customers who purchased this item also bought
- Resistors - 0.5 Watt, Metal Film, 1% tolerance
- Resistors - 2 Watt, Metal Oxide, Power
- Capacitor - SoZo, 500V, NexGen Yellow Mustard Vintage
- Capacitor - SoZo, 500V, NexGen Blue Molded Vintage
- Capacitor - Mod® Electronics, Aluminum Electrolytic, 105°C, Axial Lead
- Knob - Plastic, Set Screw, Small MXR Style, 0.75" diameter
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.