public GuitarAmp(IVolumeComponent volumeComponent, IHeadphoneComponent headphoneComponent, FootswitchComponent footswitchComponent, SpecialEffectsComponent specialEffectsComponent) { _volumeComponent = volumeComponent; _headphoneComponent = headphoneComponent; _footswitchComponent = footswitchComponent; _specialEffectsComponent = specialEffectsComponent; }