The JT-30 is a high impedance mic. What does high impedance mean?
A. Impedance is a way to measure of electrical resistance. The JT-30 does not conduct electricity well and is therefore a high impedance device. When the JT-30 was designed, the tube amplifiers of the time needed an input that had high impedance. The JT-30 looks like a guitar to a guitar amplifier. Tube guitar amplifiers expect very high impedance as input and work best that way. Modern microphones are low impedance. They don t need as much preamplification and require a small transformer that matches the impedance before they can be used with a guitar amplifier.
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