Solid State Rectifier - Yellow Jacket® YJR, For 5AR4, 5U4, 5Y3

Solid State Rectifier - Yellow Jacket® YJR, For 5AR4, 5U4, 5Y3

Yellow Jacket
Solid State Rectifier - Yellow Jacket® YJR, For 5AR4, 5U4, 5Y3 image 1
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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 ID:
Yellow Jacket
Item Diameter1.301 in.
Item Height0.82 in.
Packaging Information
Packaging Dimensions4.75 in. × 3.5 in. × 1.315 in.
Weight (Packaging)0.0882 lbs.

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Specifications, Files, and Documents

PDF: YJR Instruction Sheet YJR Instruction Sheet3.27 MB
Questions? Contact us at [email protected], or give us a call at 480-820-5411

Product Reviews

5.00 out of 5 based on 6 reviews
jokatalya - March 16th, 2023
5 out of 5

My 5E3 clone had the famous flubby, farty bottom end. The Yellow Jacket SS rectifier did wonders to tighten up the low end and made it play at higher volumes without extraneous low end junk noise. My favorite amp is way more useful and versatile now. Own a tube rectified amps with a standby switch? Pop for the $22 (shipped) and give it a try.

JOSEPH MOLANDA - April 16th, 2020
5 out of 5

Great solid state replacement rectifier! Have to put in a time delay relay to let power tubes warm up before high voltage is applied.

Yuzo Yamada - April 9th, 2018
5 out of 5

This is perfect for my new 45 amplifier to replace "5U4", that was making lousy/annoying hum noise. I love this YJR!

Beat regards,

CHRISTOPHER BUTLER - April 23rd, 2016
5 out of 5

All good/no issues/works as advertised. love your company.

kevintaft - March 13th, 2016
5 out of 5

This is a perfect Silicon replacement for my HH Scott Tube Amp GZ34/5AR4 Rectifier.

Rick Shaw - April 19th, 2015
5 out of 5

These are great for a little more high voltage.....