Running an amplifier without a speaker connected to it can potentially damage the amplifier. This is because an amplifier is designed to drive a speaker, and when a speaker is not present, the amplifier has nowhere to dissipate the energy it is producing. This can cause the amplifier to overheat and potentially damage the internal components.
If you accidentally run your amp without a speaker connected, it is best to turn off the amplifier immediately and allow it to cool down before inspecting it for any damage. If you notice any unusual smells, sounds, or smoke, it is best not to use the amplifier and have it checked by a professional.
It’s also important to note that some amplifiers have a built-in protection circuit that will shut off the power when no speaker is detected, this is to prevent damage to the amplifier. So, it’s best to check your amplifier’s manual to see if it has this feature.
In the future, make sure to always connect a speaker to the amplifier before turning it on to avoid any potential damage.