Tag Archives | Dr Z repair

Dr Z Repair

Dr Z Repair – Mini Z

Dr Z Repair – Mini Z This Dr Z Repair was a simple job. This DR Z amp is a 2 valve class A amp with one ECC83/12AX7 and one EL84. In this case, the output EL84 valve was faulty, the heater. The customer asked me to replace the amp with one the fancy ‘cryo’ […]

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