We are updating the block diagram and will replace the tech datasheets online asap.
In the meantime, to clarify how the AMM works:
– The AMM gain is applied post channel delay, so all post-delay sends (including channel to Main / Group) are affected by the AMM.
– The AMM sidechain or ‘key’ input is sourced post-Filters (pre gate) but is always following the state of the channel Mute and has an option to follow the channel fader.
You are right in your understanding that PFL is affected by the AMM gain. You can still listen to any point in the channel path by pressing the Listen button and touching the source point on the screen. Any Listen point pre-delay will not be affected by the AMM.
Hope this helps.