XA160.8 220V and 240V

Hi guys, a friend of mine own a pair of XA160.8 monoblock rated 220V, he’s soon moving to Australia(240V), are they going to work correctly with 240V? I mean they’ll definitely turn on and sing for a while at least, but some designs are sensitive with that 10% voltage increment, causing over heat or worse melting something in long run, what will happen in this case?
Thanks 🙏