Working to squeeze more performance from my Pi2AES and bought these.
Interesting product from IanCanada with the ShieldPi it actually has a power filter and and actual copper shield to cover the Pi to reduce the amount of noise it generates and can get to the hat. @Gothique
Something you may want to check out.
The second thing is a cool GPIO extender. Previously I’d used a 40 pin ATA HD ribbon cable. This is much smaller and easier to place within the custom enclosure I’ve commissioned. 
I thought about creating an enclosure with the power supply in it, but figured external is going to be less noise anyway and will allow me to change power supplies