Tag Archives | Hughes & Kettner Repair

Hughes & Kettner Repair

Hughes & Kettner Repair – Tube 50

This Hughes & Kettner repair is a tube 50 brought in for a valve amp bias. The Tube 50 is a fixed bias amp, meaning you need to bring the amp to a tech to have it adjusted (confusingly!!) by a technician. The opposite of fixed valve bias is cathode valve bias. Confusingly cathode bias […]

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