What type of measurement would a DMM display if used to test the output from an amplifier?

When testing the output from an amplifier with a Digital Multimeter (DMM), you would typically measure the voltage. The output of an amplifier is usually an AC voltage signal that carries the amplified audio signal. The DMM is capable of providing a voltage reading, which is expressed in volts.

Using the DMM in voltage mode allows you to assess the performance of the amplifier by determining whether it is delivering the appropriate voltage level based on the expected specifications. This is critical in ensuring that the amplifier is functioning correctly and producing the desired output without distortion or inadequate levels.

Impedance measurement, while relevant in the context of audio systems, is not typically what you would analyze when directly checking an amplifier’s output. DC current measurement is also not applicable here as amplifiers normally operate in AC, and signal strength measurement would generally require specialized RF equipment, rather than a DMM. Therefore, voltage measurement is the correct choice when evaluating an amplifier's output.