Radio Daze-Tube Adapters

THD YELLOW JACKET® CONVERTERS
Yellow Jacket® Converters are a type of specialized adapter which permit the use of EL84/6BQ5 power tubes in place of 6V6, 6L6, EL34 and 7591 types. They give you a simple class-A operation from any amp. They not only rearrange the pin locations of the tubes, but also provide necessary current limiting on the screens and cathodes as well as blocking the amplifier's grid bias voltage, while configuring the EL84 in a Class-A, self-adjusting cathode-bias circuit. In other words, there are no adjustments to make and no modifications necessary. You simply plug the Yellow Jacket® Converter 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 in your EL84 (not provided), turn on the amp and enjoy. NOS or USED 6BQ5/EL84 tubes are available as a separate item. See below. NOTE: Yellow Jackets Converters are not always yellow as shown. Stock varies between yellow, black and red.
Part Number	DESCRIPTION	THUMBNAIL PHOTO (click for more information)	PRICE EACH
T-YJC	Converts most audio amplifiers with 6L6, EL34, 6550 or 6V6 tubes to EL84/6BQ5 tubes without modification or rebiasing. Converts from Class-AB to Class-A operation. Drops output power by 50% to 70%. Safe for all common amplifiers and transformers. Connects to chassis-ground for cathode biased amps. EL84/6BQ5 tube not included but is available separately.		$29.00
T-YJS	Converts most audio amplifiers with 6L6, EL34, 6550 or 6V6 tubes to EL84/6BQ5 tubes without modification or rebiasing. Converts from Class-AB to Class-A operation. Drops output power by 50% to 70%. Safe for all common amplifiers and transformers. EL84/6BQ5 tube not included but is available separately.		$29.00
T-YJ20	Converts most audio amplifiers with 6V6 and similar-based tubes to EL84/6BQ5 tubes without modification or rebiasing. Converts from Class-AB to Class-A operation. Keeps output power the same as the 6V6 tubes were. Safe for all common amplifiers and transformers. EL84/6BQ5 tube not included but is available separately.		$29.00
T-YJ7591	Converts most audio amplifiers with 7591 and similar-based tubes to EL84/6BQ5 tubes without modification or rebiasing. Converts from Class-AB to Class-A operation. Slight power reduction from 7591. Safe for all common amplifiers and transformers. EL84/6BQ5 tube not included but is available separately.		$29.00
T-6BQ5-N	NOS 6BQ5/EL84 Tube		$19.00
T-6BQ5-U	USED 6BQ5/EL84 Tube		$9.50