The FC9 is a professional and versatile volume pedal from Yamaha. The pedal can be used together with pianos, keyboards, and synthesizers. The pedal can be used with every instrument that has a foot controller-input, which means it can be used together with instruments from different brands. The FC9 is very similar to the popular FC7, but the FC9 has two inputs and outputs, which means it can be used for two instrument simultaneously. Additionally, the FC9 has easier input-options. The angle of the pedal can also be adjusted, so you can use it while you’re sitting and standing, just like the FC7. Lastly, the pedal has a fortissimo function, which means nuances can be added to your sound.