Not sure if anyone saw this yet, I noticed it posted on Matrixsynth:
One of the issues thrown around about the A4 is the lack of polyphony. It is a 4 track sequencer/synthesizer that currently cannot play four-note chords from a keyboard.
Randy
It has been mentioned once or twice here in the other A4 threads.
I’ve had an A4 for about a month now. And it’s a first rate bit of kit 
I mostly understand why Elektron are in no hurry to implement a polyphonic mode themselves though, as it somewhat defeats the object of what the A4 is about. But still, at least the option is there now, with a bit of help from a Midipal I still need to get me one!
(And… Good lord, what is that chap playing it through)