Powered & Passive PA Mixers
PA MIXER | POWERED MIXER | NON-POWERED MIXER | PASSIVE MIXER | DJ MIXER | MINI MIXER
Some mixers are stand alone units that feed into a separate power amplifier. These are non-powered mixers or passive mixers. Other mixers with a built-in amplifier are powered mixers or active mixers.
The sound board or mixer give you control of your sound. You need to decide how many different audio sources you wish to control. For example, you may have four microphones, a keyboard & two guitars. These can all have their volume mixed so that they blend in well. Most mixers also allow you to alter & fine tune the tone of each channel.