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testing a 100volt line amp


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If the low impedance works ok, you can pretty much bank on the 100v being ok as it's usually just through an internal transformer that's normally quite reliable; sometimes driven off the low imp output, other times the low impedance and high impedance share tappings on a common transformer.


As a quick test, if you have an analogue avo, stick it across the 100V output on AC volts and speak into the mic, it should give a good deflection.


I assume you dont have a spare 100V line transformer lying around to test it.

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