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Yellow Jackets

Yellow Jackets® allow EL84 power tubes to be used in place of most common guitar amp power tubes, providing a "self-bias" Class-A configuration for the EL84 so that no bias adjustment is required.

EL84s have a tight and focused sound, and most converters will produce a substantial maximum power reduction making it easier to find that sweet, warm mix of preamp and power amp distortion at a lower volume.

For more information, see YellowJacketsTC.com

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P-SAYJ Item ID: 041566	Tube 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. Read More...	$37^.50 Qty: *	Click to read more
P-SAYJ-SHORT Item ID: 041571	Tube 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. Read More...	$45^.00 Qty: *	Click to read more
P-SAYJ-C Item ID: 041621	Tube 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. Read More...	$37^.50 Qty: *	Click to read more
P-SAYJ-T-UNI Item ID: 041626	Tube 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. Read More...	$37^.50 Qty: *	Click to read more
P-SAYJ-TRIODE Item ID: 041631	Tube 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. Read More...	$37^.50 Qty: *	Click to read more
P-SAYJUNI Item ID: 041636	Tube 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. Read More...	$37^.50 Qty: *	Click to read more
P-YJSHORT Item ID: 001880	Tube Converter - Yellow Jackets^®, YJShort The YJShort is shorter than the standard YJS converter, allowing for use in amps that do not have room for the standard converters. It is a specialized, current-limiting/voltage-conditioning adapter for use in most 20 to 100 watt amps which use 6L6, EL34, 6550 or 6V6 output tubes. All Yellow Jackets® converters come with JJ Brand EL84/6BQ5 vacuum tubes. Read More... View Data Sheets	Starting at $68^.40 Type * Qty: *	Click to read more
P-YJS-X Item ID: 001878	Tube Converter - Yellow Jackets^®, YJS 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. (Fixed bias tubes have their cathode connected directly to ground and a negative DC voltage applied to their control grid). All Yellow Jackets® converters come with JJ Brand EL84/6BQ5 vacuum tubes. Read More... View Data Sheets	Starting at $56^.05 Type * Qty: *	Click to read more
P-YJUNI Item ID: 001882	Tube Converter - Yellow Jackets^®, YJUni 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. Read More... View Data Sheets	Starting at $47^.50 Type * Qty: *	Click to read more
P-YJ20 Item ID: 001872	Tube Converter - Yellow Jackets^®, YJ20 The YJ20 is for use in most amplifiers using 6V6 output tubes. The YJ20 is similar to the YJC but does not drop the plate and screen voltages. It is meant for use in lower power output amps (20 watts or less) when no power reduction is desired. The ground wire connects to the chassis-ground for cathode-biased amplifiers. All Yellow Jackets® converters come with JJ Brand EL84/6BQ5 vacuum tubes. Read More... View Data Sheets	Starting at $56^.05 Type * Qty: *	Click to read more