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Dr. Z AMA: "Yearly Amp Maintenance"
How to make your AMP'S TUBES last LONGER! Dr. Z AMA!
Dr. Z AMA: "Testing a used amp before buying."
Dr. Z AMA: "How to use your Stand-by Switch"
Dr. Z AMA: "Chassis construction in Dr. Z Amps."
Dr. Z AMA: "Impedance Mismatching"
Dr. Z AMA: "Amplifier Quality Assurance"
Dr. Z AMA: "What is Class A operation?"
Dr. Z AMA: "Shop Tour"
Dr. Z AMA: "What's the deal with the Z28?"
Dr. Z AMA: "When is an amp done?"
Dr. Z AMA: "Tube Amp Bias"
