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Yellow Jackets Tube Converters

Yellow Jackets® tube converters allow EL84 power tubes to be used in place of the most common guitar amp power tubes, including 6L6, EL34, 6V6, 7027, 6550, and 7591. Most Yellow Jackets® provide a substantial output power reduction and a "self-bias" Class A configuration for the EL84 so that no bias adjustment is required. Yellow Jackets® are like getting a whole new amp.

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P-SAYJTube Converter - Yellow Jackets®, YJS, Converter Only

Converter-only version of the P-YJS now available for a limited time. Tubes not included. Requires an EL84 vacuum tube, such as:



  • T-EL84-EH (Electro-Harmonix)
  • T-EL84-GEN (Genalex)
  • T-EL84-JJ (JJ Electronic)
  • T-EL84-MUL (Mullard)
  • T-EL84-MP-PV (Peavey)
  • T-EL84-S-MP-GT (Groove Tubes)
  • T-EL84-SOVT (Sovtek)
  • T-EL84-TAD (Tube Amp Doctor)
  • T-EL84-TUNG (Tung-Sol)
  • T-EL84_6BQ5 (NOS)
  • T-EL844-JJ (JJ Electronic EL844)
  • T-EL84M-SOVT (Sovtek EL84M)


We also sell an EL84 sampler set containing 9 EL84 tubes:



  • T-EL84-SET


The YJS is a specialized, current-limiting/voltage-conditioning adapter for use in most 20 to 100 watt amps that use 6L6, EL34, 6550 or 6V6 output tubes. The YJS is for amps with fixed bias power tubes.


$37.50
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P-SAYJ-SHORTTube Converter - Yellow Jackets®, YJShort, Converter Only

Converter-only version of the P-YJShort now available for a limited time. Tubes not included. Requires an EL84 vacuum tube, such as:



  • T-EL84-EH (Electro-Harmonix)
  • T-EL84-GEN (Genalex)
  • T-EL84-JJ (JJ Electronic)
  • T-EL84-MUL (Mullard)
  • T-EL84-MP-PV (Peavey)
  • T-EL84-S-MP-GT (Groove Tubes)
  • T-EL84-SOVT (Sovtek)
  • T-EL84-TAD (Tube Amp Doctor)
  • T-EL84-TUNG (Tung-Sol)
  • T-EL84_6BQ5 (NOS)
  • T-EL844-JJ (JJ Electronic EL844)
  • T-EL84M-SOVT (Sovtek EL84M)


We also sell an EL84 sampler set containing 9 EL84 tubes:



  • T-EL84-SET


The YJShort is shorter than the standard YJS converter, allowing for use in amps that do not have room for the standard converters.


$45.00
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P-SAYJ-CTube Converter - Yellow Jackets®, YJC, Converter Only

Converter-only version of the P-YJC now available for a limited time. Tubes not included. Requires an EL84 vacuum tube, such as:



  • T-EL84-EH (Electro-Harmonix)
  • T-EL84-GEN (Genalex)
  • T-EL84-JJ (JJ Electronic)
  • T-EL84-MUL (Mullard)
  • T-EL84-MP-PV (Peavey)
  • T-EL84-S-MP-GT (Groove Tubes)
  • T-EL84-SOVT (Sovtek)
  • T-EL84-TAD (Tube Amp Doctor)
  • T-EL84-TUNG (Tung-Sol)
  • T-EL84_6BQ5 (NOS)
  • T-EL844-JJ (JJ Electronic EL844)
  • T-EL84M-SOVT (Sovtek EL84M)


We also sell an EL84 sampler set containing 9 EL84 tubes:



  • T-EL84-SET


The YJC is similar to the YJS, but for use in amps with cathode-biased power tubes. Cathode-biased power tubes have a bias resistor connected from their cathode to ground.


$39.38
Click to read more
P-SAYJ-T-UNITube Converter - Yellow Jackets®, YJUni, Triode Version, Converter Only

Converter-only version of the P-YJUNI-T now available for a limited time. Tubes not included. Requires an EL84 vacuum tube, such as:



  • T-EL84-EH (Electro-Harmonix)
  • T-EL84-GEN (Genalex)
  • T-EL84-JJ (JJ Electronic)
  • T-EL84-MUL (Mullard)
  • T-EL84-MP-PV (Peavey)
  • T-EL84-S-MP-GT (Groove Tubes)
  • T-EL84-SOVT (Sovtek)
  • T-EL84-TAD (Tube Amp Doctor)
  • T-EL84-TUNG (Tung-Sol)
  • T-EL84_6BQ5 (NOS)
  • T-EL844-JJ (JJ Electronic EL844)
  • T-EL84M-SOVT (Sovtek EL84M)


We also sell an EL84 sampler set containing 9 EL84 tubes:



  • T-EL84-SET


The YJUni is a simple pin-converting adapter for use in most amps with 6V6 or similar based tubes like 6F6, 6G6, 6K6, 6Y6, etc. The YJUni is shorter than standard Yellow Jackets®. It is designed for use in lower power output amps (20 watts or less) when no power reduction is desired.


$37.50
Click to read more
P-SAYJ-TRIODETube Converter - Yellow Jackets®, YJS, Triode Version, Converter Only

Converter-only version of the P-YJS-T now available for a limited time. Tubes not included. Requires an EL84 vacuum tube, such as:



  • T-EL84-EH (Electro-Harmonix)
  • T-EL84-GEN (Genalex)
  • T-EL84-JJ (JJ Electronic)
  • T-EL84-MUL (Mullard)
  • T-EL84-MP-PV (Peavey)
  • T-EL84-S-MP-GT (Groove Tubes)
  • T-EL84-SOVT (Sovtek)
  • T-EL84-TAD (Tube Amp Doctor)
  • T-EL84-TUNG (Tung-Sol)
  • T-EL84_6BQ5 (NOS)
  • T-EL844-JJ (JJ Electronic EL844)
  • T-EL84M-SOVT (Sovtek EL84M)


We also sell an EL84 sampler set containing 9 EL84 tubes:



  • T-EL84-SET


The YJS is a specialized, current-limiting/voltage-conditioning adapter for use in most 20 to 100 watt amps that use 6L6, EL34, 6550 or 6V6 output tubes. The YJS is for amps with fixed bias power tubes.


$39.38
Click to read more
P-SAYJUNITube Converter - Yellow Jackets®, YJUni, Converter Only

Converter-only version of the P-YJUNI now available for a limited time. Tubes not included. Requires an EL84 vacuum tube, such as:



  • T-EL84-EH (Electro-Harmonix)
  • T-EL84-GEN (Genalex)
  • T-EL84-JJ (JJ Electronic)
  • T-EL84-MUL (Mullard)
  • T-EL84-MP-PV (Peavey)
  • T-EL84-S-MP-GT (Groove Tubes)
  • T-EL84-SOVT (Sovtek)
  • T-EL84-TAD (Tube Amp Doctor)
  • T-EL84-TUNG (Tung-Sol)
  • T-EL84_6BQ5 (NOS)
  • T-EL844-JJ (JJ Electronic EL844)
  • T-EL84M-SOVT (Sovtek EL84M)


We also sell an EL84 sampler set containing 9 EL84 tubes:



  • T-EL84-SET


The YJUni is a simple pin-converting adapter for use in most amps with 6V6 or similar based tubes like 6F6, 6G6, 6K6, 6Y6, etc. The YJUni is shorter than standard Yellow Jackets®. It is designed for use in lower power output amps (20 watts or less) when no power reduction is desired.


$37.50
Click to read more
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