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THD Yellow Jacket EL84 Power Tube Converters

What are Yellow Jackets?
Yellow Jackets® Converters are a type of specialized adapters which permit the use of EL84/6BQ5 power tubes in place of 6V6, 6L6, EL34, and 7591 types.
How Do They Work?
They give you simple Class-A operation from any amp.Yellow Jacket® Converters not only rearrange the pin locations of the tubes, but also provide the necessary current limiting on the screens and cathode as well as blocking the amplifier's grid bias voltage, while configuring the EL84 in a Class-A, Self-adjusiting cathode-bias circuit. In other words, there are no adjustments to make and no modifications necesary, you simply plug the Yellow Jackets® into the amp's output tube sockets, (in cathode-bias amplifiers) screw the ground wires under one of the output tube socket mounting screws, plug the provided EL84's into the Yellow Jackets®, turn on the amp and play.

THD Yellow Jacket EL84 Tube Converter

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Page 1 of 2 1 2 Total products in THD Yellow Jacket EL84 Tube Converter: 21

THD YJ20D Yellow Jackets $118.00	THD YJ20DTriode Yellow Jackets $118.00	THD YJ20S Yellow Jacket $59.00
THD YJ20STriode $59.00	THD YJ7591D Yellow Jackets $118.00	THD YJBIV Yellow Jackets $99.99
THD YJBIVTriode Yellow Jacket $99.99	THD YJC Yellow Jacket $59.00	THD YJCD Yellow Jackets $118.00
THD YJCDTriode Yellow Jackets $118.00	THD YJCTriode Yellow jacket $59.00	THD YJS Yellow Jacket $59.00
THD YJSD Yellow Jacket $118.00	THD YJSDTriode Yellow Jackets $118.00	THD YJSHORTD Yellow Jackets $144.00

THD YJUNI Yellow Jacket For UniValve or BiValve Single Tube
THD YJUNITriode Yellow Jacket Same as above in Triode version for even less output.
THD YJBIV Yellow Jackets For UniValve or BiValve Duet
THD YJBIVTriode Yellow Jacket Same as above in Triode version for even less output.
THD YJ20S Yellow Jacket For Single 6V6 Tube
THD YJ20STriode Same as above in Triode version for even less output.
THD YJ20D Yellow Jackets For 6V6 Duet
THD YJ20DTriode Yellow Jackets Same as above in Triode version for even less output.
THD YJS Yellow Jacket For Single 6V6, 6L6, EL34
THD YJSTriode Yellow Jackets Same as above in Triode version for even less output.
THD YJSD Yellow Jacket For 6V6, 6L6, EL34 Duet
THD YJSDTriode Yellow Jackets Same as above in Triode version for even less output.
THD YJSQ Yellow Jackets For 6V6, 6L6, EL34 Quartet
THD YJSQTriode Yellow Jackets Same as above in Triode version for even less output.
THD YJC Yellow Jacket For Cathode Bias Amplifiers Single
THD YJCTriode Yellow jacket Same as above in Triode version for even less output.
THD YJCD Yellow Jackets For Cathode Bias Amplifiers Duet
THD YJCDTriode Yellow Jackets Same as above in Triode version for even less output.
THD YJSHORTD Yellow Jackets For 6V6, 6L6, EL34 Duet (Short Version where space is a concern)
THD YJSHTDTriode Yellow Jackets Same as above in Triode version for even less output.
THD YJ7591D Yellow Jackets For 7591 Duet