Tube Converter - Yellow Jacket®, YJS, Triode version

Tube Converter - Yellow Jacket®, YJS, Triode version

Yellow Jacket
Tube Converter - Yellow Jacket®, YJS, Triode version image 1
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Starting at: $44.95
Product Options
  • Quad (P-YJS-T-Q)
are currently out of stock and will be placed on backorder.

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 Jacket® converters come with JJ Brand EL84/6BQ5 vacuum tubes.

  • All Yellow Jacket® converters come with JJ Brand EL84/6BQ5 vacuum tubes.
  • Converts most audio amplifiers with 6L6s, EL34s, 6550s, or 6V6s and similar-based tubes to EL84s without modification or rebiasing.
  • Converts: Class AB to Class A operation
  • Drops Output Power: 70% to 90%.
  • Safe for all common amplifiers and transformers.

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 type vacuum tubes. Yellow Jacket® converters allow you to harness the musicality of EL84 vacuum tubes in amps that don't use them already - it's like getting a whole new amplifier!

There is no rebiasing involved, which makes modifying your amp's tone very easy. Yellow Jacket® converters give you simple Class-A operation from any amp. They not only rearrange the pin locations of the tubes, but also provide the necessary plate voltage drop and current limiting on the screens 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® 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 EL84s into the Yellow Jacket® converters, turn on the amp and play.

All Yellow Jacket® converters have a one year warranty against manufactured defects.

SKU:
P-YJS-T
Item ID:
039840
Brand:
Yellow Jacket
Part Numbers
Quantity TypeOur Part NumberUPC/EAN
SingleP-YJS-T889406064973
DuetP-YJS-T-D889406064980
QuadP-YJS-T-Q889406064997
Product Measurements by Type
Item Diameter1.301 in.
Item Height, without pins2.18 in.
Item Height, with tube5.0 in.
Packaging Information
Packaging DimensionsDuet versionP-YJS-T-D3.4 in. × 2.4 in. × 2.4 in.
Quad versionP-YJS-T-Q4.75 in. × 3.75 in. × 2.531 in.
Single versionP-YJS-T3.4 in. × 2.4 in. × 2.4 in.
Weight (Packaging)Duet versionP-YJS-T-D0.348 lbs.
Quad versionP-YJS-T-Q0.538 lbs.
Single versionP-YJS-T0.225 lbs.
Product Measurements by Item
P-YJS-T-D - Duet versionItem Diameter1.301 in.
Item Height, without pins2.18 in.
Item Height, with tube5.0 in.
P-YJS-T-Q - Quad versionItem Diameter1.301 in.
Item Height, without pins2.18 in.
Item Height, with tube5.0 in.
P-YJS-T - Single versionItem Diameter1.301 in.
Item Height, without pins2.18 in.
Item Height, with tube5.0 in.

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