Guitar amp heads are the part of your rig that actually amplify the signal before it is sent to a speaker cabinet. These amplification stages ensure the volume is sufficient, as well as adding tone, before sending a powered signal to a speaker.
How do guitar amp heads work?
Guitar amp heads have a pre-amp stage and a power amp stage that add tone and volume to your guitar signal. This allows it to be played through a passive speaker.
Do guitar amp heads have speakers?
No - guitar amp heads must be used with a separate speaker cabinet in order to be heard. If you need an amplifier that you can use without a separate cabinet, look for a combo amplifier that combines a head and cabinet.