The Amplifier Envelope controls the overall volume of the layer over time (pre FX).
This control determines the initial rise time of the loudness envelope. The shortest time is selected by setting it fully counter-clockwise. From 0ms to 30s.
This control determines the fall time of the loudness envelope down to the level set by the sustain control while a key on the keyboard is being held down. If the sustain control is at its maximum position, this control has no effect on the sound. From 0ms to 28s.
This control determines the level of the loudness envelope following the initial decay (set by the decay control).
This control determines the fall time of the loudness envelope of a particular voice after the key controlling that voice is released. From 0ms to 28s.