Yellow Jacket YJC cathode bias amps

The YJC is for amplifiers with cathode biased power tubes. (This is often referred to as "self-bias" or "auto-bias" because it does not require a bias adjustment when tubes are changed.) Cathode biased power tubes will have a resistor and bypass capacitor connected in parallel from their cathode to ground, as seen with most preamp 12AX7 triodes. The YJC is the YJS with an added ground wire. The ground wire is used to bypass the amp's original cathode bias components so that the Yellow Jacket's internal bias components are used instead. What would happen if I didn't connect the ground wire in my cathode biased amp? The amp would bias itself too cold to sound good, but no damage would occur. If you don't know how your amp is biased (fixed or cathode), you can just try connecting and disconnecting the ground wire and listen for which way sounds the best. (Connecting the ground wire in a fixed bias amp won't cause damage either.) Prijs is per stuk!

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