Products > Amp Power Reduction Kits > YJ Cathode Bias Amplifiers
Converters such as Yellow Jackets allow you to substitute your octal output valves with EL84's. These current limiting voltage conditioning adaptors gives power reduction and the option of using your amp in Triode or Pentode mode. These offer a cost effective way of power reduction.
Yellow Jacket for cathode bias amps only.
Cathode biased amplifiers power valves have a bias resistor connected from their cathode to ground. The ground wire of the YJC is used to bypass the amps cathode bias components so the Yellow Jacket converters internal bias components are used instead.
Examples of amplifier that use this circuit are Marshall Origin 20 Marshall DSL20, Carr Rambler, Carr Viceroy, Fender 57 Tweed Deluxe RI, Fender Champ 600.