Bias on Blues Jr.

Everything can be improved. Blues Junior amps are a particular good example. A great idea for it's size and power but it suffers from poor quality parts, tone and speaker. Here is Bias Pot and Oscillation mod to cool the tubes and prevent nasty Junior disease.  Below is a multi-tap OT with jacks to switch it to 4 ohm when a plug is inserted, genius!

OT and Jacks

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