Yamaha MG12 Input Four Bus MixerFor more than a century, Yamaha has been building a legacy of superior craftsmanship and innovation exemplified in all of our products, from an unrivaled catalog of world class musical instruments to touring grade professional audio. Now in its third incarnation, the MG Series embodies this pursuit of design excellence, and incorporates some of the same technologies developed for use in high end professional consoles, including studio quality preamps,