Hmm, this might not work...
The Adafruit touch screen - https://www.modmypi.com/raspberry-pi/sc ... uchscreen/
I2C (GPIO02/Pin 3 and GPIO03/Pin 5)
SPI (GIPO10/Pin 19, GPIO09/Pin 21, GPIO11/Pin 23 and GPIO08/Pin 24)
And the JustBOOM amp uses these pins - https://pinout.xyz/pinout/amp_zero
As you can see GPIO24 is required by both boards. This is used to control the volume on the AMP, but I'm not sure what it's used for on the screen.
They also share the I2C pins, which shouldn't be a problem as long as they have different hardware addresses.