Can you damage an amplifier by unplugging a guitar without first turning the volume on down or off?

Yes, unplugging a guitar from an amplifier without first turning the volume down or off can damage the amplifier. This is because when the guitar is unplugged, the signal from the guitar is suddenly interrupted, which can cause a power surge in the amplifier. This power surge can damage the amplifier's transistors, capacitors, and other components.

To avoid damaging your amplifier, always turn the volume down or off before unplugging the guitar.