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.

Converter-only version of the P-YJS. Tubes not included. Requires an EL84 vacuum tube, such as:
We also sell an EL84 sampler set containing 9 EL84 tubes:
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.
- 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

Converter-only version of the P-YJC. Tubes not included. Requires an EL84 vacuum tube, such as:
We also sell an EL84 sampler set containing 9 EL84 tubes:
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.
- 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.
$37.50

Converter-only version of the P-YJShort. Tubes not included. Requires an EL84 vacuum tube, such as:
We also sell an EL84 sampler set containing 9 EL84 tubes:
The YJShort is shorter than the standard YJS converter, allowing for use in amps that do not have room for the standard converters.
- 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

Converter-only version of the P-YJSHORT-T. Tubes not included. Requires an EL84 vacuum tube.
$45.00

Converter-only version of the P-YJUNI-T. Tubes not included. Requires an EL84 vacuum tube, such as:
We also sell an EL84 sampler set containing 9 EL84 tubes:
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.
- 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

Converter-only version of the P-YJS-T. Tubes not included. Requires an EL84 vacuum tube, such as:
We also sell an EL84 sampler set containing 9 EL84 tubes:
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.
- 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

Converter-only version of the P-YJUNI. Tubes not included. Requires an EL84 vacuum tube, such as:
We also sell an EL84 sampler set containing 9 EL84 tubes:
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.
- 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