Also, on the full schematic, I see that you’ve got the shutdown pins permanently pulled high to VCC, and then you use the auto-standby circuit to disconnect VCC via a mosfet. But you should be sequencing power to mute and shutdown before/after VCC, so as to prevent popping. If you’re not actually using the auto-standby to disable the power supply (which you aren’t), it’d be smarter to leave VCC connected and instead control the shutdown pin. You’ll get pretty much the same power savings, but without the popping. Even without sequencing the mute pin it’d still be superior to just turning off VCC.