Yamaha MJ100 is a versatile five-channel mixer that can be used for a variety of applications. It features two microphone inputs, one stereo instrument input, and two stereo source inputs. The microphone inputs have phantom power for powering condenser microphones, and the instrument input can be used with either a guitar or bass. The source inputs can be used to connect a variety of devices, such as a CD player, MP3 player, or computer.

The MJ100 also features a five-band graphic equalizer, which can be used to adjust the overall sound of the mix. The equalizer has +/-12dB of control over each band, allowing you to boost or cut specific frequencies. This can be useful for correcting problems with the sound of the room or the speakers, or for creating special effects.