Layers have several parameters to control their level, and each serves a different purpose.
LAYER LEVEL

The Layer Level is used to control the overall output of a Layer, and is best used as a mix control between Layers.
Range -inf dB (silence) ~ +9.54dB
AMP/GAIN
On the right side of each Layer Page, there is a button that toggles between the AMP and GAIN sliders.

- AMP is a Pre-Layer Level Amplitude control, and it is modulatable and polyphonic. It uses a linear curve to control level, and works well with LFO or complex envelopes. For example, if you bring AMP all the way down then right-click on the fader and navigate to Modulate with LFO, you will hear the Amplitude of that Layer being modulated. Amplitude is polyphonic.
Range 0 (silence) ~ 1
Click on the AMP button to display the GAIN slider.

- GAIN is similar to AMP, but it uses a Logarithmic (dB) curve to control level. This works better when using Aftertouch or MPE modulation sources since it allows you perform smooth, logarithmic volume swells and gain boosts.
Range -inf dB (silence) ~ +9.54dB
PAN

The Layer PAN knob provides independent PAN control for each Layer. PAN is a polyphonic modulation target.
Range 0.000 ~ 1.000
REMINDER: If Shared Mode is engaged, AMP/GAIN and PAN are shared across layers.
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