The amplifier has many audio inputs. So all you need is a suitable cable from the Macbook to the amplifier. My assumption: the Macbook has a 3.5mm stereo jack plug to two stereo cinch plugs on the amplifier. Standard cable.

Unfortunately, I cannot offer any support. On the contrary: The right stereo output went off a few weeks ago. I haven't done anything about it yet. I will probably have to return the amplifier to the supplier for a check/repair. Perhaps I will receive support from the supplier/manufacturer myself. (;-))
Greetings Kurt Keller