Integrated Amp Control Board

Hello all! Long time lurker, first time poster. I am not sure if this is the best place to post this. Please let me know if there is a more appropriate forum.

Here goes:

I am designing a board that will allow me to control my SCA-35 with my phone. The controller features 4 analog inputs and 4 optical inputs. The optical inputs feed into a DAC board that will be housed in the amp case. At the heart of the design is the ESP32 IC. I am using a rotary encoder for manual power and input selection and an Alps motorized pot for volume control. Before I have the board made, I was wondering if any of you would be willing to review my design to point out anything I missed or improvements I can make.

Any feedback you care to offer will be much appreciated!

Schematic_AmpControl%20V4_2020-07-30_14-21-03.png
 
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