Tube Converter - Yellow Jacket®, YJ20

Tube Converter - Yellow Jacket®, YJ20

Yellow Jacket
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Starting at: $44.95
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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 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 6V6s and similar-based tubes to EL84s without modification or rebiasing.
  • Converts: Class AB to Class A operation
  • Drops Output Power: Does not drop power.
  • 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-YJ20
Item ID:
001872
Brand:
Yellow Jacket
RoHS Compliant
Part Numbers
Quantity TypeOur Part NumberUPC/EAN
SingleP-YJ20889406037250
DuetP-YJ20-D889406037243
QuadP-YJ20-Q609722126441
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-YJ20-D3.4 in. × 2.4 in. × 2.4 in.
Quad versionP-YJ20-Q3.5 in. × 2.25 in. × 2.25 in.
Single versionP-YJ203.4 in. × 2.4 in. × 2.4 in.
Weight (Packaging)Duet versionP-YJ20-D0.339 lbs.
Quad versionP-YJ20-Q0.678 lbs.
Single versionP-YJ200.221 lbs.
Product Measurements by Item
P-YJ20-D - Duet versionItem Diameter1.301 in.
Item Height, without pins2.18 in.
Item Height, with tube5.0 in.
P-YJ20-Q - Quad versionItem Diameter1.301 in.
Item Height, without pins2.18 in.
Item Height, with tube5.0 in.
P-YJ20 - Single versionItem Diameter1.301 in.
Item Height, without pins2.18 in.
Item Height, with tube5.0 in.

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Product Reviews

5.00 out of 5 based on 1 reviews
- September 30th, 2020
5 out of 5

So far these are working great. Install was easy.

Now my Frankenbuild (SRPP front end into cathode follower with Marshall tone stack, cathode biased 2x6v6 final(originally)) has those sparkly, creamy highs I've been missing.