Hi thanks for your message,
The aftershock needs 300mA and the Zoom looks like it needs 500mA
The other thing I wasn’t sure of was the polarity of the Aftershock being compatible with the brick.
The brick is centre negative whereas the Aftershock looks like it's tip negative I don't know if they are compatible and it's just different terminology for the same thing, or if it would cause a problem.
thanks Graham