Reply To: Retropie recommended setup for bartop?

[petrockblog]

I would say that the main differences are that

– the ControlBlock also contains a power switch functionality
– the ControlBlock is an extension board for the RPi and directly communicates with the RPi via some of the GPIO pins and not, like the Ipac, via USB. Whether this is beneficial or not for you depends on your preferences.

There is also a video on the ControlBlock page mentioned above that shows the use of two arcade controller sets with the ControlBlock.