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.
Tube Converter - Yellow Jackets®, YJS, Converter Only
Converter-only version of the P-YJS. 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.
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Tube Converter - Yellow Jackets®, YJShort, Converter Only
Converter-only version of the P-YJShort. 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.
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Tube Converter - Yellow Jackets®, YJC, Converter Only
Converter-only version of the P-YJC. 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.
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Tube Converter - Yellow Jackets®, YJUni, Triode Version, converter only
Converter-only version of the P-YJUNI-T. 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.
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Tube Converter - Yellow Jackets®, YJS, Triode Version, converter only
Converter-only version of the P-YJS-T. 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.
Please Log In to view prices
Tube Converter - Yellow Jackets®, YJUni, Converter Only
Converter-only version of the P-YJUNI. 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.
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Tube Converter - Yellow Jackets®, YJShort, Triode Version, converter only
Converter-only version of the P-YJSHORT-T. Tubes not included. Requires an EL84 vacuum tube.
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