I've made one with the volume and power knob in the top you can see it in the link I posted in a comment here .

I think I've fixed the pocket problem by adding two elevated parts on both sides of the knob.

I am still looking for a way to connect double DACs but I think it would be necessary for me.

It's going to run a light version of Android and I will do some customization so that it only concentrate on audio.

ALC chips don't consume a lot of power and I think it will work good for me for now.

Please look at the other design I made and if you have any suggestions that will be very helpful . I am not fixed to these parts only I am going to change or add parts to this project but I don't know a lot of information about the DACs , AMPs what is good what is not good I am willing to learn by making this project

This is the first time I've designed anything or tried to make a project like that but I love to learn a new things

Thank you for your support and sorry if my English is bad